下列句子改成被动语态

题目

下列句子改成被动语态
1.People speak English all over the world.
2.Does Tom clean the walting -room every day?
3.Someone bulit this house in 1952.
4.We will not meet Frieda at the station.
5.A famous doctor is going to operate on his grandfather.
6.We are going to help him finish the work before noon.
7.Uncle Alble is knocking at the door.
8.She was not looking after our children this time yesterday.
9.Bob had caught hold of John's arm by then.
10.They promised Mary a new hand-bag for her birthday.
11.Has your friend told the children stories about Lei Feng?

答案

1.English is spoken by people all over the world.
2.Is the walting -room cleaned by Tom every day?
3.This house was built by someone in 1952.
4.Frieda will not be met by us at the station.
5.A famous doctor's grandfather is going to be operated on by his grandson.
6.He will be helped by us to finish the work before noon.
7.The door is beings knocked by Uncle Alble .
8.Our children were not looked after by her at this time yesterday.
9.John's arm had been caught hold of by Bob by then.
10.A new hand-bag was promised by them for Mary's birthday.
11.Have the children been told the stories about Lei Feng by your friend.