1. Definition of verb

Verb (verb) is a word that expresses action or state. For example: run, run; work, work; sleep, sleep, etc.

2. Classification of verbs

Verbs can be divided into the following types according to different characteristics

< p>1) Auxiliary verb (auxiliary verb) and lexical verb (lexical verb)

According to the use of the verb in the sentence, verbs can be divided into auxiliary verbs and lexical verbs

Substantial meaning Verb is the main verb that expresses the action or state of the subject in the sentence. For example: syudy, study; walk, etc.

Auxiliary verbs are verbs that together with the content verb form different tenses, voices or moods. For example: do, can, have, etc.

2) Transitive verb (transitive verb), intransitive verb (intransitive verb) and link verb (link verb)

According to the verb's ability Whether there is an object, the sentence can be divided into transitive verbs, intransitive verbs and linking verbs. A transitive verb means that the action expressed by the verb can have an object that receives the action, that is,

a verb that can be followed by an object. Transitive verbs can be divided into monotransitive verbs (mono-transitive verb), di-transitive verbs (di-transitive verb) and compound transitive verbs (complex-transitive verb)

Monotransitive verbs are Refers to verbs that can only take direct objects, for example

I have a book. (direct object)

Ditransitive verbs mean that in addition to the direct object, there is an indirect Object, indirect object is used to indicate the object of the action.

I give her (indirect object) a book. (direct object)

Compound transitive verbs refer to verbs that need to be connected to compound objects. Compound object refers to direct object and object complement. For example

we choose him monitor. (object complement)

Intransitive verbs refer to verbs that cannot be followed by objects, such as

They are running. (intransitive verb)

Copulative verbs refer to verbs that have word meanings in themselves, but cannot be used as predicates alone and must be combined with predicates to form predicates.

we are all students. (predicative)

3) Finite verbs and non-finite verbs

According to whether the sentence can be used as a predicate in the sentence , verbs can be divided into finite verbs and non-finite verbs. (non-finite verb)

The form of a finite verb must be restricted by the subject, and must be consistent with the subject in person and number. This consistency is often reflected in person, tense and voice etc.

For example; I am a worker. (Person)

He borrowed a book from the library. (Tense)

I wish her a good journey. (Voice)

A non-finite verb is a form in which the verb is not restricted by the subject. Non-restrictive verbs refer to the infinitive form of the verb. Forms of verb -ing and verb -ed. They cannot independently serve as the predicate verb of a sentence, so they are not restricted by the person and number of the subject. In addition to being combined with certain auxiliary verbs to form certain forms, they can also serve as subjects, predicates and other components in sentences.

4) Regular verbs and irregular verbs

According to whether the past tense and past participle of the verb change regularly, verbs can be divided into regular verbs and irregular verbs. The past tense of regular verbs Both the past participle and the past participle end in ed, but the changes in irregular Song lyrics are irregular.

Some irregular verbs, whether in base form, past tense or past participle, have the same form, for example: put; put; put. Some of the latter two forms are the same

For example, buy; bought;bought But some of the three forms are different, such as see;saw;seen