Question

Which of the following options is a present perfect sentence?

1 -
I have known him all my life.
2 -
I know him very well.
3 -
I don’t know him at all.
4 -
I would like to know him

Answer 1

I have known him all my life.

We have to find out present perfect tense

Structure= subject+have/has+v³+object .

Here,

option a. matches with the structure.

So,

Option a, is the correct answer