`1.` Coffee is grown in more than 50 countries around the world

`=>` Cấu trúc: S + am/is/are + V3/-ed + ( by ) + O

`2.` They bought the book yesterday.

`=>` Cấu trúc: S + V2/-ed + O

`3.` Kate invited Tim to his birthday party.

`=>` Cấu trúc: S + V2/-ed + O

`4.` Her dogs are fed ( by her ) twice a day.

`=>` Cấu trúc:: S + am/is/are + V3/-ed + ( by ) + O

`5.`  I lost my keys yesterday

`=>` Cấu trúc: S + V2/-ed + O

`6.` My dad took the photos yesterday

`=>` Cấu trúc: S + V2/-ed + O

`7.`  The bank isn't opened during the weekend.

`=>` Cấu trúc: S + am/is/are ( not ) + V3/-ed + ( by ) + O

`8.` They sent the letter two days ago.

`=>` Cấu trúc: S + V2/-ed + O

Đáp án:

`1.` Coffee is grown in more 50 countries around the world.

`2.` They bought the book yesterday.

`3.` Kate invited Tim to her/his birthday party.

`4.` Her dogs are fed twice a day.

`5.` They lost my key yesterday.

`6.` My dad took the photos yesterday.

`7.` the bank during isn't opened the weekend.

`8.` They sent the letter two days ago.

`*` Cấu trúc bị động:

`1.`Thì QKĐ: S + was/were + Ved/V3 + (by   o)..

`2.` Thì HTĐ: S + am/is/are + Ved/V3 + (by    o)...

`-` Chủ động:

Thì QKĐ: S + Ved/V2..

Thì HTĐ: S + V(s/es)...