11. Have you been shown what to do?
Câu bị động thì hiện tại hoàn thành: have/has + been + P2
12. The sister asked Tom if he was hungry.
Câu gián tiếp dạng câu hỏi yes/no: S1+V1(ed)+If/Whether+S2+V2(lùi về quá khứ 1 thì)
13. The old woman asked me how I went to school.
Câu gián tiếp dạng Wh-H ques: S1+V1(ed)+Wh-ques+S2+V2(ed)
14. This is a machine that is used to washing clothes.
15. I am invited to the party.
Câu bị động hiện tại đơn: is/am/are+P2
16. I have played the piano for 2 years.
17. Huong said that she sometimes worked on Sundays.
Câu trần thuật: S1+V1(ed)+that+S2+V2(lùi về quá khứ 1 thì)
18. He was told to stay home for three days.