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A verb is a kind of word (part of speech) that tells about an action or a state. It is the main part of a sentence: every sentence has a verb. In English, verbs are the only kind of word that changes to show past or present tense.
Every language in the world has verbs, but they are not always used in the same ways. They also can have different properties in different languages. For example, in some other languages (e.g., Chinese & Indonesian) verbs do not change for past and present tense. This means the definition above only works well for English verbs.
- 1 The word 'verb'
- 2 Verb forms
- 3 Kinds of Verbs
- 4 Tense, aspect, and mood
- 5 Sentence parts that go with verbs
- 6 Differences between verbs and other kinds of words
- 7 References
The word 'verb'
The word verb originally comes from *were-, a Proto-Indo-European word meaning "a word". It comes to English through the Latin verbum and the Old French verbe.
In simple sentences, the verb may be one word: The cat sat on the mat. However, the verb may be a whole phrase: The cat will sit on the mat.
Verbal phrases can be extremely difficult to analyse: I'm afraid I will need to be going soon. There seem to be three verbal phrases here, which mean something like Sorry, I must go soon.
In English and many other languages, verbs change their form. This is called inflection. Most English verbs have six inflected forms (see the table), but be has eight different forms.
|Primary forms||past: walked||She walked home|
|3rd singular present: walks||She walks home|
|plain present: walk||They walk home|
|Secondary forms||plain form: walk||She should walk home|
|gerund: walking||She is walking home|
|past participle: walked||She has walked home|
You should notice that some of the verb forms look the same. You can say they have the same shape. For example, the plain present and the plain form of walk have the same shape. The same is true for the past and the past participle. But these different forms can have different shapes in other verbs. For example, the plain present of be is usually are but the plain form is be. Also, the past of eat is ate, but the past participle is eaten. When you look for a verb in the dictionary, it is usually the plain form that you look for.
An English sentence must have at least one primary-form verb. Each main clause can only have one primary-form verb.
Kinds of Verbs
English has two main kinds of verbs: normal verbs (called lexical verbs) and auxiliary verbs. The difference between them is mainly in where they can go in a sentence. Some verbs are in both groups, but there are very few auxiliary verbs in English. There are also two kinds of auxiliary verbs: modal verbs and non-modal verbs. The table below shows most of the English auxiliaries and a small number of other verbs.
|auxiliary verbs||lexical verbs|
|modal verbs||Can you play the piano?||I fell|
|I will not be there||I didn't fall|
|Shall we go||I had breakfast.|
|Yes, you may||I'm playing soccer.|
|You must be joking||Must you make that noise?|
|non-modal verbs||Have you seen him?||Have you seen him?|
|I did see it||I did see it|
|He is sleeping||He is sleeping|
There are several auxiliary verbs:
- To do (do, does, did)
- To be (am, is, are, was, were): Creates a progressive tense
- To have (have, has, had): Creates a perfect tense
The following verbs are modal auxiliaries.
- You shouldn't be here.
- He isn't at home.
- We haven't started yet.
Use of the auxiliary do
Sometimes the verb do. It does not really change the meaning.
- I do talk (Present)
- I did go (Past)
It is also used in the negative when no other auxiliary verbs are used.
- I don't talk (Present)
- I didn't go (Past)
Many other languages do not use the verb do as an auxiliary verb. They use the simple present for do, and the simple past or perfect for 'did
Tense, aspect, and mood
Tense is mainly used to say when the verb happens: in the past, present, or future. In order to explain and understand tense, it is useful to imagine time as a line on which past tense, present tense and future tense are positioned.
Some languages have all three tenses, some have only two, and some have no tenses at all. English and Japanese for example have only two tenses: past and present. Chinese and Indonesian verbs do not show tense. Instead they use other words in the sentence to show when the verb happens.
|Past tense||Present tense|
|She walked home||She walks home|
|He ran quickly||He runs quickly|
|I could swim well||I can swim well|
|Did you live here?||Do you live here?|
Aspect usually shows us things like whether the action is finished or not, or if something happens regularly. English has two aspects: progressive and perfect. In English, aspect is usually shown by using participle verb forms. Aspect can combine with present or past tense.
English uses the gerund-participle, usually together with the auxiliary be (and its forms am, is, are, was, and were) to show the progressive aspect.
- I'm sleeping. (present progressive)
- He was studying English last night. (past progressive)
- He will be going to the store tomorrow (future progressive)
Many other languages, such as French, do not use progressive tenses.
- I've seen him twice. (present perfect)
- I had lived there for three years. (past perfect)
The past perfect can be used to express an unrealized hope, wish, etc.
- He had intended to bake a cake but ran out of flour.
- She had wanted to buy him a gift but he refused.
After If, wish and would rather, the past perfect can be used to talk about past events that never happened.
- If only I had been born standing up!
- I wish you had told me that before.
- I would rather you had gone somewhere else.
Finally, English mood is now usually shown by using modal verbs. In the past, English had a full mood system but that has almost completely disappeared. The subjunctive mood now uses the plain form. There is also a form of be that is used in conditionals to show that something is not true (e.g., If I were a bird, I would fly to California.)
Sentence parts that go with verbs
Almost all English sentences have subjects, but sentences that are orders (called imperatives) usually do not have any subjects. A subject usually comes before a verb, but it can also come after auxiliary verbs. In the following examples, the subject is underlined and the primary verb is in bold.
- We need you.
- The food was good.
- The small boy with red hair is sleeping.
- Can you see the car?
- Come here. (no subject)
Many verbs can be followed by an object. These verbs are called transitive verbs. In fact, some verbs must have an object (e.g., take), but some verbs never take an object (e.g., sleep). Verbs that do not take an object are called intransitive verbs. Some verbs can even have two objects. They are called ditransitive verbs. In the following examples, the object is underlined and the primary verb is in bold.
- I'm sleeping. (no object)
- I took the book from him.
- I gave him the book. (2 objects)
- I am happy. (no object)
- I became a teacher. (complement, no object)
- I slept in my bed (1 object)
- He is good.
- He is a boy.
- She became sick.
- She became a manager.
- It looks nice.
Verbs can be modified by various modifiers, mainly adverbs. Note that verbs generally do not need modifiers; it's usually a choice. In the following examples, the adverb is underlined and the verb is in bold.
- The boy ran quickly.
- The freely swinging rope hit him.
Verbs also commonly take a variety of other modifiers including prepositions.
Differences between verbs and other kinds of words
Sometimes a verb and another word can have the same shape. In these cases you can usually see the difference by looking at various properties of the words.
Verbs vs. adjectives
Sometimes a verb and an adjective can have the same shape. Usually this happens with participles. For example, the present participle interesting and the adjective interesting look the same. Verbs are different from adjectives, though, because they cannot be modified by very, more, or most. For example, you can say "That is very interesting," so you know interesting is an adjective here. But you cannot say "My teacher is very interesting me in math" because in this sentence interesting is a verb. On the other hand, if you cannot change the 'be' verb to 'seem' or 'become', it is probably a verb.
- He was isolated / He became isolated (isolated is an adjective)
- The door was opening / *The door became opening (opening is a verb)
Verbs vs. nouns
The gerund-particle sometimes looks like a noun. This is especially true when it is used as a subject, as in the following example:
- Running is good for you.
The main differences between these verbs and nouns are: modifiers, number, and object/complement
Verbs cannot generally be modified by adjectives and nouns cannot generally be modified by adverbs. So, in "Running regularly is good for you", running is a verb because it is modified by regularly, an adverb.
Verbs cannot change for number, so if you can make the word plural, it is a noun, not a verb. For example, "this drawing is nice" can change to "these drawings are nice", so drawing is a noun. But "drawing trees is fun" cannot change to "drawings trees is fun", so it is a verb here.
Many verbs can take objects or complements, but nouns cannot. So, in "parking the car is hard", parking is a verb because it takes the object the car. But, if you say, "there's no parking", parking may be a noun because it does not have an object.
Verbs vs. prepositions
- Given the problems, I do not think we should go.
- We have many helpers, including John.
- According to the map, we are here.
- He went to hospital following the fight.
The main difference between verbs and prepositions is that verbs have a subject. Even if the subject is not written, you can understand what it is. Prepositions do not have a subject.
- Huddleston R. & Pullum G.K 2005. A Student's Introduction to English Grammar. Cambridge: Cambridge University Press
- Sangmeister, Lisa. (2009). Past Tense in English: From OE to PDE, p. 11.
|The Simple English Wiktionary has a definition for: verb.|