Present Perfect Tense

Present Perfect Tense is used to express an action that happened in the past and the effect is still.

There are two kinds of Present Perfect Tense.

They are..

A.     Nominal Form

Affirmative

S +  Have/Has + been + Complement

Examples..

You have been a doctor.

They have been friendly.

Negative

S + Have/Has + not + been + complement

Examples..

You have not been a doctor.

They have not been friendly.

Interrogative

Have/Has + S + been + Complement + ?

Examples..

Have you been a doctor?

Have they been friendly?

B.     Verbal Form

Affirmative

S + Have/Has + V3 + O/C

Example..

He has eaten the fried chicken.

Negative

S + Have/Has + not + V3 + O/C

Example..

He has not eaten the fried chicken.

Interrogative

Have/Has + not + V3 + O/C +  ?

Example..

Has he eaten the fried chicken?