This document provides information about the present perfect tense in English. It lists the positive, negative, and interrogative forms of the present perfect tense using the verbs "have" and "has" followed by the past participle form of the main verb. Examples are given for the first person singular and plural and third person singular pronouns.

1. PRESENT PERFECT
TENSES
POSITIF
Subject + Have/has +
verb 3
I have taught English
She has taught English
They have taught English
NEGATIVE
Subject + Have/has +
not +verb 3
I have not taught English
She hasn't taught English
They haven't taught English
iNTERROGATIVE
Have/has + subject +
verb 3 ?
Have I taught English ?
Has she taught English ?
Have they taught English
TENSES