`1.` The safe couldn't be opened by the secretary.

`2.` A lot of beautiful trees have been planted by the gardener.

`3.` The tennis match has been won by Federer.

`4.` A terrible song was sung by lady Gaga.

`5.` A tasy cheese cake will be made by the baker.

`6.` My aunt's flag was designed by a French.

`->` Cấu trúc câu bị động:

`-` Động từ khuyết thiếu: S + ĐTKT + be + Ved/V3 + (BY  O)

`-` thì Hiện tại hoàn thành: S + have/has + been + Ved/V3 + (BY  O)

`-` thì Quá khứ đơn: S + was/were + Ved/V3 + (BY  O)

`-` thì Tương lai đơn: S + will be + Ved/V3 + (BY  O)

1. The safe couldn't be opened by the secretary.

2. A lot of beautiful trees have been planted by the gardener.

3. The tennis match has been won by Federer.

4. A terrible song was sung by Lady Gaga.

5. A tasty cheesecake will be baked by the baker.

6. My aunt's flat was designed by a French.

Cấu trúc câu bị động:

S + ĐTKT( must , can, could,.. ) + be + Ved/V3 + (byO)

 S + have/has + been + Ved/V3 + (by O)

S + was/were + Ved/V3 + (by O)

 S + will be + Ved/V3 + (by O)

#Học tốt ạ