The indefinite form of the verb of the word goes. Features of the syntactic role of the infinitive

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Indefinite verbs are used in dictionaries. What is an infinitive? Features are as follows:

1. Verbs in the indefinite form answer the questions "what to do?" and “what to do?”.
2. Endowed with grammatical features of the form (perfect or imperfect).
3. It is returnable and non-returnable.
4. Saved.
5. When forming, the suffixes of the indefinite form of the verb -t, -ti, -ch are used. For some verbs it is –st, -sti.

Important! Any verbal word form can be put in the initial one with the help of the question “what to do?” or “what to do?”.

Such word forms are called indefinite because it is impossible to determine their main grammatical features: time, person, mood, gender and number, which distinguishes them from the rest.

Indefinite form of the verb: signs

Signs of the indefinite form of the verb

The main features are the endings of verbs in -ti, -t and -ch. The questions “what to do?” will help determine this. and “what to do?”.

Examples of Education

The infinitive ends with the suffix -ti if it is preceded by a consonant: come, crawl, shake. The suffix -т is used after vowels: write, fly, shoot, pull.

In some words ending in -ch, there is no ending in the initial form, and -ch is included in the structure of the root. For example, attract, bake, protect, crush.

How to use the indefinite form of a verb

The infinitive is needed to form other verb forms and spell checking.

Often the endings of verbs in personal word forms are unstressed, which raises doubts about their writing. To check spelling, you need to know how to put a verb in the indefinite form.

For example:

• Build - What to do? build. So, it is correct to write the ending -ish.
• Glues, glued - What to do? glue. Correct writing-it and -il.
• Hated - What to do? hate. Correctly write the vowel -e.

The unstressed suffix in the infinitive indicates its spelling in the past tense, in the gerund and participle form.

Glue - glued - gluing - gluing - gluing.

What is a reflexive or irrevocable verb

Sometimes for derivational suffix-ty, -ty, -whose additional postfix -sya or -ss is used. For example, pray, take care, ask, take cover.

Postfix allows you to define the returnable and non-returnable form.

The rule explains that word forms with -sya (-s) are considered reflexive and mean the action of someone or something directed at themselves, the contact or position of the object. For example, tip over, deteriorate, equip, wade.

Irreversible infinitives express an action to someone or something. For example, winding, eavesdropping, ironing.

reflexive verb

Signs of transitive and intransitive infinitive

Transitivity in an indefinite form allows you to identify additional word, indicating the object or phenomenon involved in the action.

As an additional word is used:

• Noun or pronoun used in accusative and no suggestion. For example, put on a coat, cook dinner.
• Noun (accusative or Genitive), expressing the ratio or share of something and used without a preposition. For example, pour tea, wait for guests.
• A negative expression with an infinitive uses a noun or a pronoun in the genitive. For example, not to have a chance, not to hurt her.

Additional words give meaning to the infinitive, and without them the essence of what is happening is lost. Some part of the action is transferred to objects or circumstances, they acquire a clear semantic load.

In the intransitive infinitive, the action denotes one word.

Perfect and imperfect species

Verbs are classified into perfect and imperfect.

Imperfect characterize an action that lasts without a specific time reference. These actions can be called eternal, there is no indication of their completeness or incompleteness. They ask the question “What to do?”.

• I'm about to go on a trip.
• Street lights began to go out.

Perfect infinitives indicate completed action or something that is bound to happen. The result can already be observed or it is still to be expected. The question "What to do?" is used.

• After opening the can, the contents must be transferred.
• Did you receive instructions on what to report?

Known a minor part of dual infinitives. They are used in both forms in one word form. They are defined by meaning. For dual verbs in the infinitive, you can put a standard question.

• Tomorrow the entire area should be cleared. - "What to do?".
• Clean up trash on your desk and in your room. - "What to do?".
• Need to explore the city. - "What to do?".
• They were to explore the city at dawn. - "What to do?"

Perfect and imperfect view

Instruction

You can determine the infinitive by the question. Find a verb and ask a question to it. If this is a verb in an indefinite form, then it will answer the question “what to do?”, “what to do?”. For example, grow, bake, flood, breed, lie down.
At the end of such verbs always soft sign.

It is difficult to distinguish the infinitive from the personal form if the word is written in transcription. The record of the finals of these forms is the same: [tutor "itsa] (studies) - [tutor" ita] (studies). In this case, pay attention to , the vowel before [-ca] or the context where you can ask a question. If this work is not feasible, then both forms are appropriate.

The indefinite form of the verb is included in the compound nominal predicate. In this case, the sentence contains two heterogeneous verbs. To determine which one is the infinitive, you need to designate grammatical basis. The predicate will consist of two verbs. The one that contains lexical meaning, - infinitive, it needs a soft sign. So, in the sentence "Students will be able to work out additionally" the predicate "will be able to work out." And the indefinite form is "to work out."

The indefinite form of the verb can act as secondary members of the sentence. In such cases, it can be determined by following the logic of reasoning. Ask a question indirect case from the predicate to the infinitive. If this is possible, then in this case he is an addition. For example, in the sentence “The coach told us to do a warm-up”, the word “do” will be an object (said what?). In this case, reason like this: the action indicated in the verb “ordered” is performed, and others will perform it. So this is not a predicate, because it is simple.

Circumstances expressed in the indefinite form of the verb most often answer the questions “for what purpose?”, “For what reason?”. In the sentence “I came to the gym to train”, we ask the question “I came for what purpose?” to the infinitive.
By definition ask a question from . In the sentence “I am fluent in the ability to play the guitar”, the infinitive is -: the ability (what?) to play.

Related videos

note

Only in one-part sentences with the main member of the predicate there are no words from which a question is asked to the verb.

Helpful advice

Ask questions from one word to another. If a minor member expressed by a verb, it is only an indefinite form. Be sure to write a soft sign.

Sources:

• verbs in indefinite form

A verb is a part of speech with permanent and non-permanent features. The person of the verb is its fickle sign, and it is only for verbs in the present and future tenses. Not everyone can immediately identify it. To do this, we will give a short instruction on how to determine the person of the verb.

Instruction

Instruction

You must know that indefinite form verb often called the infinitive. The verb in this form does not change either in numbers or in persons. It is impossible for him to determine both inclination and appearance.

You can, of course, form an indefinite form of the verb with the help of auxiliary questions “what to do?”, “what to do?”. But this method may not always be useful to you. So, it is difficult for schoolchildren to put in the infinitive impersonal verbs, which in the future may be the result of spelling errors.

Children also confuse third-person verbs with infinitives, which means they will not be able to determine whether to write: "tsya" or "tsya". For example, for the verb in syntactic construction“seems successful” children find it difficult to ask auxiliary questions “what to do?”, “what to do?”. Thus, they will not be able to check the spelling of .

Finding the indefinite form of a verb or forming it is easier, paying attention to some details. So, you should know that the infinitive has the ending "t" or "ti". For example, in "bring" the ending will be "ti", and in the word "in time" - "t".

The ending "ti" is in an indefinite form if it is preceded by a vowel sound, and "t" is after a consonant. So, in the infinitive "bloom" before the end of "ti" there is a consonant sound "s", and in the word "see" - the vowel "e".

To learn how to form an indefinite form, it is necessary to ask the questions “what to do?” or "what to do?" And do not forget to pay attention to the structure of the word.

Sources:

• the verb in the indefinite form will not happen

The noun is a separate part of the speech of the Russian language. It has the forms of number and case, which classify the categories of gender, as well as animateness and inanimateness, depending on the objects designated.

Instruction

Imagine several variants of the same thing: “home”, “home”, “home”. How to determine its initial form(or dictionary form)? The initial form of the noun is the nominative form. This case denotes the concept expressed by the word. Most often, the names in this case play the role of the subject in the sentence, less often - the predicate. Nominative to the questions: “who?”, “What?” Like what?" - "house", "who?" - "bird". Ask similar questions to determine form noun.

Recall from school curriculum, which is in the initial form, in most cases is in singular. Therefore, in order to define vocabulary form this part of speech, put it in the singular: “many houses” - “one house”.

Note that some nouns only have form plural, and it is impossible to modify them, leading to the singular. These include, for example, the names of time periods, paired objects, masses of matter: “day”, “glasses”, “trousers”, “weekdays”, “pasta”, “holidays”, “ink”, “scissors”. The initial form for similar is the form nominative case plural.

Pay attention to the need for homonyms (words that are the same in sound and spelling, but different in meaning) from each other. For example: “A clock hangs on the wall” (here “clock” will have the initial form only in the plural). Or: “At these hours the sky is usually

Infinitive, or indefinite form of the verb

A verb in its initial or indefinite form is called an infinitive. The infinitive always answers the question "what to do?" or "what to do?" It is never possible to ask questions in relation to the initial form: “what is she doing?”, “What will she do?”, “What will she do?”, “What did she do?”, “What did she do? " etc. That is, the infinitive, by definition, has minimal amount morphological features.

Examples. The verb "go" answers the question "what to do?". Accordingly, it is a verb in an indefinite (initial) form, or an infinitive. However, the verbs “goes”, “will go”, “go” answer the questions “what is he doing?”, “what will he do?”, “?”. These verbs already have morphological features- persons, numbers and times - and are not infinitives.

Another example. The verb "write" answers the question "what to do?" and is an infinitive. From this initial form verbs are formed in the past and future tenses, first, second and third persons, singular and plural: “wrote”, “wrote”, “”, “”, “will write”.

In other words, the verb in the infinitive is always the zero (indefinite) form, from which one can always form different forms the same word in different persons and numbers. This process is called conjugation.

What features of the verb can be determined by the initial form

If the infinitive is the initial, zero, indefinite form of the verb, is it possible to determine any signs of this part of speech, or morphological signs, from it? Yes, you can define constants, signs of the verb.

Firstly, according to the indefinite form, it is possible to determine the types of the verb - perfect or. The verb is not perfect look in the initial form answers the question "what to do?" and denotes an unfinished action. For example, “walk”, “”, “sing”, “”, etc. The perfective verb in the infinitive answers the question "what to do?" and denotes a completed, finished action. For example, “walk”, “read”, “sing”, “compose”, “fly”, etc.

Secondly, by the infinitive you can determine. There are two conjugations - the first and the second. The first conjugation includes all verbs that in the infinitive end in -et, -at, -ut, -ot, -t, -yt, and a few exception verbs in -it. The second conjugation is most of verbs in -it, as well as some exception verbs in -at, -yat and -et.

A verb in its initial or indefinite form is called an infinitive. The infinitive always answers the question "what to do?" or "what to do?" It is never possible to ask questions in relation to the initial form: “what is she doing?”, “What will she do?”, “What will she do?”, “What did she do?”, “What did she do? " etc. That is, the infinitive, by definition, has a minimum number of morphological features.

Examples. The verb "go" answers the question "what to do?". Accordingly, it is a verb in an indefinite (initial) form, or an infinitive. However, the verbs “goes”, “will go”, “go” answer the questions “what is he doing?”, “what will he do?”, “?”. These verbs already have morphological features - persons, numbers and tenses - and are not infinitives.

Another example. The verb "write" answers the question "what to do?" and is an infinitive. From this initial form, verbs are formed in the past and future tenses, first, second and third persons, singular and plural: “wrote”, “wrote”, “”, “”, “will write”.

In other words, the verb in the infinitive is always the zero (indefinite) form, from which you can always form different forms of the same word in different persons and numbers. This process is called conjugation.

What features of the verb can be determined by the initial form

If the infinitive is the initial, zero, indefinite form of the verb, is it possible to determine any signs of this part of speech, or morphological signs, from it? Yes, you can define constants, signs of the verb.

Firstly, according to the indefinite form, it is possible to determine the types of the verb - perfect or. Verb imperfect form in the initial form answers the question "what to do?" and denotes an unfinished action. For example, “walk”, “”, “sing”, “”, etc. The perfective verb in the infinitive answers the question "what to do?" and denotes a completed, finished action. For example, “walk”, “read”, “sing”, “compose”, “fly”, etc.

Secondly, by the infinitive you can determine. There are two conjugations - the first and the second. The first conjugation includes all verbs that in the infinitive end in -et, -at, -ut, -ot, -t, -yt, and a few exception verbs in -it. The second conjugation includes most of the verbs in -it, as well as some exception verbs in -at, -yat and -et.

Lesson topic: "Indefinite form of verbs."

It is called indefinite, because neither time, nor number, nor person, nor gender of the verb can be determined from it.

Listen to the poem, find the verbs.

It's good, friends, to walk

On the trail with a backpack.

It's great to jump across the field

Riding a horse.

It's also nice to take the express -

flashes in the window there is a meadow and a forest.

Slide good for the waves

On a sea ship.

But it's better to race in the sky

On a steel liner. (I. Kholin)

Walk, jump (what to do?),

sit down (what to do?),

slide (what to do), rush (what to do?).

Verbs in the indefinite form answer the question what to do? or what to do? This is initial form verb. Its peculiarity is that neither time, nor number, nor person, nor gender are determined by it.

Verb flicker(what will he do?) is used in the form of the future tense, singular, 3rd person. You will learn to identify the face of verbs in grade 4.

Find out Pushkin's fairy tales, from which excerpts were taken, and find in them verbs that are in an indefinite form. How do you distinguish them?

Verbs in the indefinite form answer the question what to do? or what to do?

The mirror property had:

It speaks well...

“You, queen, are sweeter than all,

All blush and whiter.

And the queen laugh

And shrug your shoulders

And wink your eyes

And snap your fingers...

"Tale of dead princess and about the seven heroes.

Verbs in the indefinite form:

what to do?

speak

laugh

shake

wink

snap

Tsar Dadon in his old age wanted

Take a break from military affairs

And make yourself calm.

Here the neighbors disturb

Became an old king

Doing terrible harm to him.

So that the ends of their possessions

Protect from attacks

He should have kept

Numerous army.

"The Tale of the Golden Cockerel".

what to do?

bother

guard

what to do?

relax

arrange

If you want, remember.

Verbs that answer the question what to do? are imperfective verbs. Verbs that answer the question what to do? are perfective verbs.

Verbs that answer the questions what to do? and what to do?, are considered different words , even if they are the same root. They differ from each other in some parts of the basis and therefore are different in meaning.

What to do?

laugh

shake

speak

What to do?

for laughing

reap

before talking

laugh - laugh

The words are distinguished by the prefix za- (the prefix za- means "to start the action").

shake(root press -) - shake(root zha-)

The verb to shake refers to an action that is performed often (repeatedly), the verb to shake refers to an action that is performed once (once).

speak - agree

The words are distinguished by the prefix do- (the prefix do- means "finish the action").

In order not to switch from one verb to another, you need to follow the prefix in the question.

1. Put a question to the form of the verb and find out if there is a prefix C in the question - or not.

2. Ask a question of indefinite form with or without the prefix C-.

3. Name the indefinite form of the desired verb.

The indefinite form of the verb most often ends in -ty or -ty(go , get out , find , carry , crawl ). Scientists have not yet agreed on how to call this part of the word. Some consider it an ending, while others consider it a suffix.

Sometimes indefinite form the verb ends in -ch, but these letters are part of the root:

guard - guard(root guard-, guard-), lie down - lie down(root lie-, lie down-).

In the indefinite form of verbs, if it ends in something other than -ti, it is always written ь. It is also written after the letter h (-ch) - this is the spelling for the rule: ь in the indefinite form of the verb.

Determine the tense of the verbs and find the indefinite form.

flowed- what did you do?, prosh.v., what to do?, leak(root tech-flow)

shearing- what do I do ?, present in., what to do ?, cut(root cut-cut)

save save(root shore-protect)

I will carry away- what will I do ?, bud.v., what to do ?, captivate(root attract-attract)

Vowel letters in the indefinite form of verbs before -t are most often suffixes. They can be different: -a, -e, -i, -i, -o.

If they are unstressed, then there is always a spelling in their place. These letters-suffixes cannot be determined by the rule, they can only be learned from a dictionary and memorized.

Suffix -a: hear, swim, jump, listen

Suffix -e: see, offend, depend

Suffix -i: build, iron, cook, glue, put, build

Suffix -i: bark, melt, winnow, sow

Let's find the verb in the indefinite form.

The wind is barely audible,

Linden sighs by the garden...

Sensitive music lives everywhere -

In the rustle of grass

In the noise of oak forests

You just need to listen.(V. Semernin)

What is he doing?, sings, sighs, lives- verbs in the present tense.

What to do?, listen - verb in the indefinite form.

Verbs often have a special suffix -sya or -s. It is special because it is after -Т. To distinguish it from other suffixes, scientists gave it its own name - postfix ("attached after").

Form indefinite verbs using the given suffixes and prefixes.

Prefixes VZ-, ON-, PRI-, FROM-.

Roots -DREM-, -CASHL-, -DANCE-.

Suffixes -IVA-, -NU-, -YVA-, -А-, -Я-, -СЯ.

Take a nap - prefix vz-, suffix -well-,

on drowsiness - prefix on-, suffix -a,

for coughing - prefix po-, suffix -i-,

from coughing - prefix from-, suffix -i-,

dance - prefix po-, suffix -a-,

when dancing - prefix at-, suffix -yva-,

from dancing - prefix from-, suffix -yva-.

Who is eating.

The proboscis fly can only suck up liquid food. Some butterflies have incisor-like teeth at the end of their proboscis, with which they can gnaw through fruit peels and drink their juice! Eight flexible tentacles with suction cups help the octopus grab and hold any prey very tightly. With a long neck, a giraffe is able to reach tree shoots. A snail living in a shell is able to cut and grind food with its tongue. The spider can produce sticky silk for a web in which insects must fall. There are cobwebs with lids, then the prey cannot escape from it.

Can (what to do?) suck,

can (what to do?) gnaw and drink,

help (what to do?) grab and hold,

able (what to do?) to get,

capable (what to do?) to cut and grind,

can (what to do?) develop,

should (what to do?) get caught,

what to do? don't slip away.

During holidays.

Well early in the summer….and…to the lake. It's nice ... in the sun, ... in clear water, ... mushrooms, berries in the forest, ... birds singing. Interesting ....for the behavior of insects, ....with friends in football. It is useful ... in the garden and in the garden, ... for the elders in the household.

During holidays.

It's good in summer to get up early (what to do?) and (what to do?) go to the lake. It’s nice (what to do?) to sunbathe in the sun, (what to do?) to swim in clear water, (what to do?) to pick mushrooms, berries in the forest, (what to do?) to listen to birdsong. It is interesting (what to do?) to observe the behavior of insects, (what to do?) to play football with friends. It is useful (what to do?) to work in the garden and in the garden, (what to do?) to help the elders with the housework.

How to cook pancakes.

It is necessary (take) half a liter of kefir, (add) a little salt, sugar and soda, (beat) one egg and (pour) into this mass, (add) flour and everything (mix). You can (bake).

Let's put the verbs in the indefinite form.

take - what do we do ?, what to do ?, take

add - what do we do ?, what to do ?, add

whip - what do we do ?, what to do ?, beat

pour out - what shall we do?, what shall we do?, pour out

add - what do we do ?, what to do ?, add

mix - what do we do ?, what to do ?, mix

bake - what do we do ?, what to do ?, oven

How to cook pancakes.

You need to take half a liter of kefir, add a little salt, sugar and soda, beat one egg and pour into this mass, add flour and mix everything. You can bake.

(What to do?) Dress or wear? These two words are often confused.

The verbs put on and put on are similar, but they have different meanings.

You can dress someone, but only wear something for yourself.

So it's correct to say:

put on (something)

form

coat

shoes

the dress

suit

dress (someone)

child

doll

girl

sick

baby

In the lesson, you learned that verbs in the indefinite form answer the question what to do? or what to do? This is the initial form of the verb. Its peculiarity is that neither time, nor number, nor person, nor gender are determined by it.

The indefinite form of the verb most often ends in -ty or -ty, sometimes in -ch. In the indefinite form of verbs, if it ends in something other than -ti, it is always written ь.

1. M.S.Soloveichik, N.S. Kuzmenko "To the secrets of our language" Russian language: Textbook. Grade 3: in 2 parts. Smolensk: Association XXI century, 2010.
2. M.S. Soloveichik, N.S. Kuzmenko "To the secrets of our language" Russian language: Workbook. Grade 3: in 3 parts. Smolensk: Association XXI century, 2010.
3. T. V. Koreshkova Test tasks In Russian. Grade 3: in 2 parts. - Smolensk: Association XXI century, 2011.
4. T. V. Koreshkova Practice! Notebook for independent work in Russian for grade 3: in 2 parts. - Smolensk: Association XXI century, 2011.
5. L.V. Mashevskaya, L.V. Danbitskaya creative tasks In Russian. - St. Petersburg: KARO, 2003
6. G.T Dyachkova Olympiad tasks in Russian. 3-4 classes. - Volgograd: Teacher, 2008

1. School-collection.edu.ru ().
2. Cdo.omrc.ru ().
3. Oldskola1.narod.ru ().

• Read the poem. What is the main part of speech in it? Indicate in what form the words of this part of speech are used? Emphasize this form.

Don't stop me from dreaming!

I'd like a bag of candy

Expand, chew, suck,

Smack, smack, gobble,

Long, long do not swallow,

Enjoy, savor.

• Put questions to these verbs. Form an indefinite form from them and emphasize the sign of the initial form.

I carried, I ran, I whistled, I drove, I cut, I searched, I drew.

• Write out the verbs in the indefinite form from the poem in two columns.

What to do? What to do?

You don't have to go to your mom...

No need to beg your sister...

You don't have to call

No need to wait

It would seem, what simple thing! But this also linguistic phenomenon have their own characteristics and even "pitfalls", about which will be discussed later in this article.

Brief description of the infinitive in Russian

The indefinite verb is what we see written in dictionary entry. It has no mood, person, number, time, that is, it does not change depending on who performs the action, since there is simply no such subject. However, such a verb still has some features - aspect (perfect or imperfect) and conjugation (first or second). In addition, it is characterized by recurrence or irreversibility, as well as transitivity or intransitivity.

How to understand that the verb is in the infinitive

To determine that a given form of a word denoting an action is actually an infinitive, you need to ask questions of the indefinite form of the verb to it. These include: " what to do?' (for example, 'read' or 'talk') or ' what to do?" (for example, "gift" or "drink"). If the verb answers them, then it is in the initial form.

In addition, there are always suffixes in: -t-, -ti-, -ch-, -st- and -sti-. It is worth noting that some linguists argue that these are the endings of indefinite verbs, since this morpheme is subject to change. However, the controversy has not subsided so far.

What is the indefinite form of the verb used for?

The Russian language is rich enough in various possibilities of using the infinitive. The indefinite form of a verb can be a subject, a predicate, a definition, an object in a sentence, and also be integral part verbal predicate, to express imperative mood or future tense. Next, we will consider each of these cases in more detail with examples.

Specific syntactic roles of the verb in the initial form

So, a verb in an indefinite form is a subject if it is somehow characterized. For example:

• Drawing was the meaning of his life.
• Being a mother is the meaning of Svetlana's life.

In these proposals draw" and " to be (mother)» are subject, as they are separate, independent actions.

In addition, a sentence can contain two infinitives, one of which characterizes the other:

• To live means to love.

Then here" live" is the subject, and " be in love"- predicate. The member of the sentence is determined in this case easily: the subject goes before the predicate. Also instead of " means" can be a dash or the words " this", "is» and the like.

An infinitive can be a definition if it is in this form, for example:

• He went to bed determined to read a book tomorrow.

It turns out that the verb "read" here answers the question "what kind?" With what decision did he go to bed? Read (tomorrow a book). That is, a verb of an indefinite form is a definition if it refers to a noun, which means necessity, decision, desire, expression of will, and the like.

The indefinite form of the verb is also an object if, for example, it is used in such a phrase:

• Dad asked Lena to pick up the pencil.

That is, the verb "asked" here has a full lexical meaning. Both verbs refer to different people (« asked"to dad, and" raise"- to Lena).

The infinitive is an integral part of the verbal predicate if used with a verb that denotes the beginning, continuation or completion of an action, that is, it has auxiliary value. For example:

• The puppy quickly began to fall asleep.
• The teacher continued teaching.

"Started" and " continued" are just such verbs, therefore " fall asleep" and " lead" will be parts of the predicate.

The infinitive expresses the imperative when used in a commanding tone. For example, a squad leader might order: Be silent!", and the captain of the ship shout:" All hands on deck!»

The initial form of the verb expresses the future tense in sentences like this:

• Yes, Ivan should not be a pilot!

That is, it must contain a certain shade of annoyance or regret.

Common spelling mistakes

In most cases, an infinitive verb is an easy thing to spell, but sometimes people get confused. This happens when the verb is reflexive. The soft sign in front of the suffix is ​​simply forgotten - Xia-, so it turns out that the verb is in the third person and singular. And sometimes it makes it very difficult to understand when reading.

In order to avoid mistakes and correctly write suffixes (or the endings of indefinite verbs), you need to mentally ask them questions every time: “h what to do?"or" h then do?» If the verb clearly answers exactly to them, it is necessary to put a soft sign. For example, in last word in a sentence " Petya is going to sleep tonight" put a soft sign, because Petya going what to do? Get enough sleep.

Thus, an indefinite form verb is quite interesting and main part language that can be used in different occasions, the main thing is to learn them well.