1. she had her hair cut

2. by whom has this wall been rebuilt

chuyen sang cau bi dong 

1 she had someone cut  her hair 

she had .......her hair cut..................

2 who has rebuilt this wall  

by ..........whom has this wall been rebuilt?................

1 she had someone cut  her hair 

she had .......her hair cut..................

2 who has rebuilt this wall  

by ..........whom has this wall been rebuilt?................

Chuyển từ câu chủ động -> bị động

1.Who helped her?

-->By whom ...............was she helped................?

2.Who bake this cake?

-->By whom ...............is this cake baked............?

3.Who has written this sentence on the wall?

-->By whom ...............has this sentence been written on the wall................?

sao lại dùng whom mà ko phải who 

giải thích đc ko ạ

Chuyển từ câu chủ động -> bị động

1.Who helped her?

-->By whom she was helped ?

2.Who bake this cake?

-->By whom this cake is baked?

3.Who has written this sentence on the wall?

-->By whom this sentence has been written on the wall ?

sao lại dùng whom mà ko phải who 

giải thích đc ko ạ

Chuyển từ câu chủ động -> bị động

1.Who helped her?

-->By whom was she helped?

2.Who baked this cake?

-->By whom was this cake baked?

3.Who has written this sentence on the wall?

-->By whom has this sentence on the wall been?

1/ she had her hair cut

2/ Experiments should be stopped on animal

3/ He wasn't taken to the movie last night

4/ By whom has this wall been rebuilt?

5/ My house needs painting

D O I H A V E T O A N S W E R T H I S ?

1. By the 1930s, more than 282 million acres of farmland _______ in America by erosion.

A. damaged B. was damaged C. were damaged D. damages

2. The community house _______ after massive destruction of the earthquake now.

A. was rebuilt B. is being rebuilt C. has rebuilt D. is rebuilt

3. People living around the volcano ______ for one hour.

A. has evacuated B. have evacuated

C. have been evacuated D. has been evacuated

4. The air ________ if people build more factories here.

A. polluted B. will polluted C. will be polluted D. pollute

5. More trees ____ every year to protect the environmental.

A. are planted B. planted C. were planted D. will be planted

Relative clauses replaced by participles and to infinitives

1. The street which leads to the school is very wide

-> The street leading to the school is very wide

2. The system which is used here is very succesful

-> The system used here is very successful.

3. John, who teaches my son, is my neighbor

-> John teaching my son is my neighbor

4. Trains which leave from this station take an hour to get to London

-> Trains leaving from this station take an hour to get to London

5. The candidates who are sitting for the exam are all from Vietnam

-> The candicates sitting for the exams are all from Vietnam

6. We are driving on the road which was built in 1980

-> We are driving on the road built in1980

7. Customers who complain about the service should see the manager

-> Customers complaining about the service should see the manager

8. The city which was destroyed during the war has now been rebuilt

-> The city destroyed during the war has now been rebuilt

9. My brother, who met you yesterday, works for a big firm

-> My brother meeting you yesterday works for a big firm

10. The vegetable which are sold in this shop are grown without chemicals

-> The vegetable sold in this shop are grown without chemicals