Check out the italicized verbs in these example sentences. Notice what the verb tells the reader or listener about time:
Mark spilled ink on the quilt. (spilled — past)These are just three simple examples, but you get the point. The verb puts the action or state of being on a time line.Mark's mom is upset. (is — present)
Mark will wash the quilt, or his mom will murder him. (will wash and will murder — future)
One more important thing you should know about verbs: In a sentence, the verb must match the subject, the person or thing performing the action or existing in the state of being. If the subject is singular (just one), the verb is singular. If the subject is plural (more than one), the verb is plural. In these example sentences, the subject is in bold type and the verb is italicized:
The poster is on the wall of Sam's bedroom. (poster and is — singular)Sam's pets hate the poster. (pets and hate — plural)
Sam's cat has chewed one corner of the poster. (cat and has chewed — singular)
My well-behaved dogs do not chew posters. (dogs and do chew — plural)
In the last example sentence, did you notice that the word not isn't italicized? Not changes the meaning of the verb from positive to negative, but it isn't an official part of the verb. It's an adverb, if you really want to know.