A verb is a word (or group of words) which says what a person or a thing is, has or does, or what happens or is done, to a person or a thing. Example: Nina wrote a letter to her friend.
We have two different kinds of verbs in a sentence: the main verb and the helping verb. The main verb has a meaning of its own (write, push etc.) whereas the helping verb does not have any meaning of its own, it only helps the main verb (is, had etc.).
Main verbs have three basic forms -Base Form, Past Form and Past Participle Form. Example: accompany-accompanied-accompanied
The main verbs that take an object are called transitive verbs. These verbs transit or pass over the action from the subject to the object. Example: My father gave me a book on my birthday.
On the other hand, the verbs which do not transit or pass over the action from the subject to the object are called intransitive verbs. Example: The child is sleeping.
Verbs are divided into strong and weak verbs, according to the way in which they form their past tense and past participle. Strong verbs are those in which vowels inside the verb is changed to indicate different tenses. Example: go-went-gone. Verbs which form their past and past participle tenses by adding‘t’, ‘d’, ‘ed’ to its present form are called weak verbs. Example: love-loved-loved