Chuyển câu bị động sang chủ động Câu 4 How long has this fax machine been used by Mr.green? Câu 5 the singer was not recognized by his fan when he was at restourant Câu 6 He will be disqualifed from the competion by the judges if he uses drugs Câu 7 all the umecessary lights will be tarned off to save enery Câu 8 Jance was prevented from staying up toe late by her mother Câu 9 was this document typed by Mr.Brown? Câu 10 Mang dead people were found by the rescuers after the earth quake

Câu 4 How long has this fax machine been used by Mr.green?

How long has Mr. Green used this fax machine?

Câu 5 the singer was not recognized by his fan when he was at restaurant

The fan didn't recognized the singer when he was at restaurant.

Câu 6 He will be disqualified from the competion by the judges if he uses drugs

The judges will disqualify him from the competion if he uses drugs.

Câu 7 all the unecessary lights will be turned off to save energy

People will turned off the unecessary lights to save energy.

Câu 8 Jance was prevented from staying up too late by her mother

Jance's mother prevented her from satying up too late.

Câu 9 was this document typed by Mr.Brown?

Did Mr. Brown type this document?

Câu 10 Many dead people were found by the rescuers after the earthquake

The rescuers found many dead people  after the earthquake.

Giải thích:

*Bị động thì hiện tại hoàn thành:

 S + have / has + been + Vp2/-ed + (by + O)

*Bị động thì quá khứ đơn:

S + was/were + Vp2 + (by/O)

*Bị động thì tương lai đơn:

S + will be + Vp2 + (by/O)

Chúc bạn học tốt!

${4.}$ How long has Mr.Green used this fax machine?

→ chủ động HTHT dạng câu hỏi wh/h: wh/h + have/has + S + V3/ed .. ?

${5.}$ The singer's fan didn't recognized him when he was a restaurant.

→ chủ động QKĐ dạng phủ định: S + didn't + V0 .....

${6.}$ The judges will disqualify he from the competition if he use drugs.

→ chủ động TLĐ: S + will (not) + V0 ...

${7.}$ They will turn of all the umecessary to save energy.

→ chủ động TLĐ

${8.}$ Jane's mother prevented her from staying up too late.

→ chủ động QKĐ dạng khẳng định: S + V2/ed ...

${9.}$ Did Mr.Brown type this document?

→ chủ động QKĐ dạng câu hỏi yes/no: Did + S + V0 ... ?

${10.}$ The rescuers found many dead people after the earthquake.

→ chủ động QKĐ khẳng định