Subject-Verb Agreement

Third person singular -s

Use the -s form of a verb in the present tense when the subject is third person singular.

For all other subjects, use the base form in the present tense.

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Example:

base form

I live in Athens.

They live in Crete.

The Smiths live in Rome.

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-s form

He lives in Cyprus.

She lives in Malta.

Tim lives in Naples.

Ms. Conner lives in Milan.

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The verb have

The -s form of the verb have is has.

We have a winner.

He has a trophy.

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The verb be

The -s form (present tense) for be is is. For the past tense, it is was.

Was is also used with first person singular subjects (I) in the past tense.

(Am is used in the present tense. Are is used with other subjects in the present, and were is used in the past.)

She is here.

He is not here.

I am here too.

You are right.

They are wrong.

She was home yesterday.

Ron wasn't home yesterday.

I was here yesterday.

We were here too.

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