Affirmative:

Subject + Aux.Verb + V(past participio) + Compl.

• I have talked to Peter. 
• She has gone to work.
• We have been to London. 

Negative:

Subject + Aux.Verb + Not + V(past part..) + Compl.

• We haven't been to London.
• I haven't talked to Peter. 
• They haven't learned 

Interrogative:

Yes/No Question

Aux. Verb + Subject + V(past part..) + Compl.?

• Has she gone to work?

       Yes: -She has 

        No: -She hasn´t gone to work

• Have you lived in the United States long?

      Yes: -I have 

      No: -I haven't lived in the United....

Inf. Question:

W.H. + Aux.Verb + Subject + V(past part..) + Compl.?

• When has she phoned the office?
• What have you dropped in the kitchen?