1. It's time children worked (It's time + S + V_ed/2: đã đến lúc làm gì)

2. He was made to wait for two hours (bị động: S + make s.one do s.th `->` S.one + tobe + made + to do s.th)

3. Would you please smoke in here? (I + would rather + s.one + V_ed/2 = Would + s.one + please + V(inf)?

4. As I didn't know the facts, I rang the police (Câu cho sẵn là If3 `->` không có thật trong quá khứ `=>` Viết lại bẳng quá khứ đơn. Dịch: Nếu tôi biết sự thật, tôi đã không gọi cảnh sát `->` Vì không biết sự thật, tôi mới gọi cho cảnh sát)

5. It is the first time I have ever seen such a mess (S + have/has + never + Vp.p + such (a/an) + N + in this life = It is the first time + S + have/has + ever + Vp.p + such + a + N)

6. It took us three hours to open the door (S + spend + time/money + doing s.th = It + takes/took + s.one + time/money + to do s.th)

7. He was sorry for spending so much money (tobe sorry for doing s.th: xin lỗi về việc gì)

8. Before he had the car, he used to go to work by bike (used to + V(inf): một việc thường xảy ra trong Qk nhưng đã chấm dứt ở HT)

9. You'd better put your money in the bank (advise s.one to do s.th = S + had better + do s.th: nên làm gì)

10. I'll finish the work tonight if you like (Would you like + s.one + to do s.th? = S + will + do s.th + if + you + like)