Giúp mình nha ( 5 sao đề bài là chyển đổi câu

Đáp án:

4. That is the worst film I have ever seen in the cinema.

5. We last saw Mary when we left the university.

6. We haven't seen her since Christmas day.

7. This is the first time I have eaten this kind of food.

8. It has rained for an hour.

9. The last time we visited my grandfather was two months ago.

10. It's nearly five years since my brother saw his best friend. 

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Các công thức đổi HTHT - QKĐ

Type 1: 

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time + ago

--> It is / has been + time + since + S+ (last) + V2/ed 

Type 2: 

How long + has/have + S+ V3/ed?

--> When + did + S + V1?

--> How long is it + since + S+ V2/ed ?

--> How long ago + did + S + start / begin + to V / Ving? 

Type 3:

S + has/have + V3/ed + for/since + time 

--> S + started / began + to V / Ving 

--> It is / has been + time + since + S+ V2/ed 

Type 4: 

S + has/have + not/never + V3/ed + ... before

--> This/It is the first time + S+ has/have+ V3/ed

Type 5:

When + did + S + last + V1?

--> When + was the last time + S + V2/ed?