A copula is a word that connects the subject and the explanation part of the subject and explains the subject. Let me tell you the classification and usage of English verbs.

Let me briefly introduce that a copula is a kind of verb, which has its own meaning and cannot be used as a predicate alone. It must be followed by a predicate to form a copula structure: subject+copula verb+adjective (as predicate) to modify the state of the subject. It should be noted that if the sentence is simple present tense, when the subject is singular in the third person, the verb should be singular and three forms.

Second, the classification of conjunctional verbs 1, sensory verbs, smell, sound, taste, touchthisflowersmellsvernice. 2, the state copula verb, indicating the state of the subject, only beHeisateacher.3, persistent verb, indicating that the subject continues or maintains a state or attitude, Keep, rest, stay, Liehealwayskeepsilentact class. 4. Change the copula to show what the subject has become. In the winter vacation, become, grow, change, degenerate, get, go, come and run. In fact, many copula verbs can be used as copula verbs or notional verbs, but the usage is different. Such as: LookLookatmyhand notional verb, look Shelooksamazing. Conjunctive verb