1, The last time I went to the dentist was two years ago.

→ S + has/ have not + Vpp + (O) + for + khoảng thời gian = The last time + S + V(quá khứ) + (O) + was + khoảng thời gian + ago

2, It is important for us to attend all the lectures.

→ ... tobe important to sb = It is important for sb to ....: quan trọng khi làm gì

3,  My mind can't be changed.

→ Bị động của modal verb (can, should, must,...): S + modal verbs + be + Vpp

4, The stuntman advised the audience not to try this at home.

→ Advise sb (not) to do sth: khuyên ai đó (không) làm gì dó

5, If she hadn't drunk too much wine, she would have felt sick.

→ Cấu trúc câu điều kiện loại 3: If + S + had + Vpp, S + would/could/might + have + Vpp: diễn tả một điều ko có thật ở quá khứ.

Bài `1` :

`1.`It’s two years since I went to the dentist’s.

`→`S + have/has + VpII + since/for + time

`=`It's + time + since + S + V2/ed

`2.`It is important for us to attend all the lectures.

`→`It is imporant + for O + to V : Quan trọng với ai để làm gì đó

`3.`My mind can't be changed.

`→`Bị động với khuyết thiếu : S + mordel verb + be VpII + (by O)

`4.`The stuntman advised the audience not to try that at home.

`→`S + advise + O + not to V

`5.` If she had not drunk too much wine, she wouldn’t have felt sick.

`→`Câu điều kiện loại 3 : If + S + Had + VpII, S + would/ could… + have + VpII