1. Look at the man. He is teaching in the classroom.
(chủ động)
=> a) Look at the man who is teaching in the classroom.
MĐQH với who
=> b) Look at the man teaching in the classroom.
( MĐQH rút gọn dạng Ing)
2. I have a new computer. It was made in China.
(bị động)
=> a) I have a new computer which was made in China.
(MĐQH với which)
=> b) I have a new computer made in China.
(MĐQH rút gọn dạng ed)
NỐI CÂU Theo 2 CÁCH:
Cách 1: Nối câu dùng ĐTQH who/which (who thay cho Nguoi; Which thay cho vật, sự việc)
Cách2: Nối câu dùng present participles/past paticiples. (MĐQH rút gọn)

*Notes: + ĐộngTừ trong MĐQH ở thể chủ động=> dùng mđ rút gọn dạng ING (present participle).
+ ĐộngTừ trong MĐQH ở thể bị động=> dùng mđ rút gọn dạng ED ( past participle)
Exercise 2:

1. I read a book . It was written by a friend of mine.
a)=> I read a book which was written by a friend of mine.
b)=> I read a book ..........................by a friend of mine.

2. A man got on the bus. He was carrying a lot of money in a box .
=>A man who was carrying a lot of money in a box got on the bus.
=>A man ..........................a lot of money in a box got on the bus.

3. In the street there were several people . They were waiting for the shop to open.
=> In the street there were several people who were waiting for the shop to open.
=> In the street there were several people ................................. for the shop to open.

4. Britain imports many cars. They were made in Japan.
=> Britain imports many cars which were made in Japan.
=> Britain imports many cars ............................. in Japan.

5. There are a lot of people in your office. They want to talk to you.
=> There are a lot of people in your office who want to talk to you.
=> There are a lot of people in your office.......................to talk to you.
6. The cowboy fell off his horse. He had been wounded by an arrow.
=> The cowboy who had been wounded by an arrow fell off his horse.
=> The cowboy ...........................by an arrow fell off ms horse.

7. Most of the people recovered quickly. They were injured in the crash.
=>Most of the people who were injured in the crash recovered quickly.
=>Most of the people ....................... in the crash recovered quickly.

8. John looked anxiously at his watch. He wished he hadn`t come to the party
=>John, who wished he hadn`t come to the party, looked anxiously at his watch.
=>John, ..........................he hadn`t come to the party, looked anxiously at his watch.

9. The children were playing football in the schoolyard . They were my students.
=>The children who were playing football in the schoolyard were my students.
=>The children................................football in the schoolyard were my students.
10. Vietnam exports a lot of rice. It is grown mainly in the south of the country.
=>Vietnam exports a lot of rice which is grown mainly in the south of the country.
=>Vietnam exports a lot of rice............................ mainly in the south of the country.