1) The last time we saw her was on Christmas day.
→ We haven't seen her since Christmas day.
2) I haven't eaten this kind of food before.
→ This is the first time I have eaten this kind of food.
3) It started raining an hour ago.
→ It has rained for an hour.
Form:
1) S+have/has+Ved/V cột 3 bảng động từ bất quy tắc...
2) This is the first time+S+Ved/V cột 3 bảng động từ bất quy tắc...
Tất cả cấu trúc trên đều sử dụng thì HTHT
Chúc bạn học tốt
Xin hay nhất ạ!!!