Question

how to write " I know your name " in present perfect tense​

Answer 1

Answer:

I have known your name.

Answer 2

Answer:

The present perfect of any verb is composed of two elements : the appropriate form of the auxiliary verb to have (present tense), plus the past participle of the main verb.

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Forming the present perfect.

Affirmative

Subject +to have +past participle

to have + not +subject +past participle

Hasn't she visited?