A verb is a saying word used to:
a) say something about a person or thing
b) tell what a person or thing does
For example, John eats noodles everyday. The word eats tell us what John does everyday.
Other examples: I am a boy, she is happy, the puppies are eating, Mei Mei was crying, etc.
The words am, is, are, was are also called verbs. They are auxiliary (helping) verbs.
A) To Be
i) Present Tense (Singular/Plural) - is (he, she, it), I am/are (we, you, they)
ii) Past Tense (Singular/Plural) - was (he, she, it, I)/were (we, you, they)
iii) Future Tense (Singular/Plural) - will be (he, she, it)/shall be (we, you, they)
B) To Have
i) Present Tense (Singular/Plural) - has (he, she, it)/have (we, you, they)
ii) Past Tense (Singular/Plural) - had (both singular and plural)
iii) Future Tense (Singular/Plural) - will have (he, she, it)/shall have (we, you, they)
Other examples: I run, we run, you run, they run, he runs, she runs, it runs. An 'S' is used after 'run' in the third person singular number.
C) Do
i) Present Tense (Singular/Plural) - does (he,she,it)/do (we, you, they, I)
** Transitive Verbs are verbs which need an object to have a clear and complete meaning. For example we eat noodles, Mei Mei sang a song, I read a comic book, etc.
** Intransitive Verbs do not have an object. For example I ran, he swims everyday, Mei Mei sings well, the puppy runs fast, etc.