3. Getting into work is a bit difficult this morning.

4. They always play badminton on Tuesday.

6. This is the first time, I have been to England

 - This/It is the first time+thì hiện tại hoàn thành: lần đầu tiên

11. Would you like to finish the work tonight?

12. The teacher made the class not leave before 4:30

 - make someone/something do something: bắt ai đó làm gì....

13. It's over twenty years since welast saw him

15. I have never read such an interesting novel before.

17. It was in 1981 that we met

19. It's ten years since they last saw their uncle.

3. I found it a bit difficult to get into work this morning.

`=>` Getting into work this morning is a bit difficult for me.

Ving + to be  + adj (for sb) = It + to be + adj (for sb) + to V: Làm gì đó thật ... với ai đó

4. Their game of badminton is always on Tuesday.

`=>` They always play badminton on Tuesday.

6. I'm in England for the first time in my life.

`=>` This is first time I have ever been to England in my life.

Cấu trúc: This is the first time + (that) + S + have/has + (ever) + PII

11. I'll finish the work tonight if you like.

`=>` Would you like me to finish the work tonight.

12. The teacher didn't allow the class to leave before 4:30.

`=>` The teacher made the class not leave before 4:30.

Make sb + V: làm cho ai đó ...

13. We haven't seen him for over twenty years.

`=>` It's over twenty years since the last time we saw him.

15. It is the most interesting novel I've ever read.

`=>` I have never read such an interesting novel before. 

17. We haven't met since 1981.

`=>` It was in 1981 that we last met.

19. They haven't seen their uncle for ten years.

`=>` It's ten years since the last time they saw their uncle.