Present Perfect

Affirmative:


subjeto(he-she-it)+have/has+v.participle+C


Interrogative:


(wh) have/has+S+v.participle+C+?


Negative:


S+haven`t/hasen`t+v.participle+C


http://www.youtube.com/watch?v=asq05S5Ijbw


Past Perfect:


S+had+v.participle+C


Interrogative:


(wh) had+s+v.participle+c+?


Negative:


S+hadn`t+v.participle+C




http://www.youtube.com/watch?v=4jcJBi675_M