1, They have trained these people, who have been through lots of disasters and know how to help, to deal with disasters.

2, The wind was so strong that it picked up and carried far miles trees, cars and even houses.

3, There has been no early warning for this one and people were not prepared. (câu này không chuyển sang chủ động vì nó đã là chủ động rồi)

4, By the next morning, they buried several villages around Mount Sinaburg in ash and debris.

Đáp án:

`-` Cấu trúc câu chủ động:

`+` Thì Hiện tại hoàn thành: S + have/has + Ved/V3 ...

`=>` Bị động: S + have/has + PII + (by o)...

`+` Thì quá khứ đơn: S + Ved/V2

`=>` Bị động: S + was/were + PII + (by  o)...

`1.` They have trained these people, who have been through lots of disasters and know how to help, to deal with disasters.

`2.` The wind was so strong that it picked up and carried far miles trees, cars and even houses.

`3.` There has been no early warning for this one and people were not prepared. 

`4.` By the next morning, they buried several villages around Mount Sinaburg in ash and debris.

$#No Copy$