1.He has never eaten this food before.
2.This is the first time I have eaten this kind of food
3.My father has seen his brother since 20 years.
4.I have't gone swimming since I was in France.
5.It's has been two weeks since the last time you cleaned this room
6.Mr John last time visited France when 1990
7.I have never met singer before
8.We haven't seen our grandfather for two years
9.They haven't talked to each other for two months
10.Before my mother came home , my father had watered all the plants in the garden
Cấu trúc hiện tại hoàn thành:
-Khẳng định:S + have/ has + V3
-Phủ định:S + have/ has not + V3
-Nghi vấn:Have/ has + S + V3?
