You have read an interesting book. this is present tense or perfect tense?

The sentence "You have read an interesting book" is in the present perfect tense.

Here's why:

* Present Perfect Tense: Used to describe an action that started in the past and continues to have relevance in the present.

* The Key Word: "Have" indicates the present perfect tense.

The sentence implies that you finished reading the book sometime in the past, but the experience of having read it is still relevant to the present conversation.