Question

my question is the what is past perfect tense in introgativ sentence

Answer 1

In past perfect two sentence is done .like
1. You had come before I went .
in this sentence (you had come) this has done first than second is i went

As you are asking about Interrogative sentence. so, 1. Had you come before I went .
structure of interrogative is ,


Had +S +verb of fourth form +o+before +s+verb ki second form.