How do you form a present perfect tense?

Answer 1

The infinitive of every verb takes the form "to do" for which the present is "I do" and the past "I did. There are two participles "doing" and "done"

The second participle is generally known as the "past" participle. However, it is more accurately referred to as the "perfect" participle because that's when it is used.

The present perfect tense is formed used the auxiliary "to have" with the participle used to form the perfect tense. For example:

I have eaten

you have eaten (singular)

he, she or it has eaten

we have eaten

you have eaten (plural)

they have eaten

Some examples (using abbreviations):

I've eaten my lunch.

My brother has eaten all the cake.

He's gone home already.

We've seen that film twice.

She has been to the museum.

They have eaten the cake.

She has left school.

Answer 2

To form the present perfect tense, use the auxiliary verb "have" (or "has" for third person singular) and combine it with the past participle of the main verb. For example, "I have eaten," "She has gone," "They have finished."