`1.` Our exercises were corrected by the teacher this morning

`-` Bị động QKĐ:

S +  was/were + V3/ed + (by + O)

`1.` I saw a man who is a teacher at the bookshop

`2.` Lan whose mother works in a company is my friend

`3.` He lost the pencil which I bought for him yesterday

`4.` Thailand is a country which has a lot of paddy fields

`___________________________`

`-` who `-` thay thế cho chủ ngữ chỉ người

`@` N(người) + who + V + O

`-` whose `-` thay thế cho TTSH

`@` N(người)  +  whose + N + V

`-` which `-` thay thế cho chủ ngữ, tân ngữ chỉ vật

`@` N(thing) + which + N+ V/ V + O

`1,` Our exercises was corrected by the teacher this morning

`-` CBĐ - QKĐ : S + was/were + P2 + (by O) + ...

`2,` I saw a man who is a teacher at the bookshop

`->` N(chỉ người) + who + V ...

`3,` Lan is my friend whose mother works in a company

`->` N(chỉ người) + whose + N + V ...

`4,` He lost the pencil which I bought it for him yesterday

`->` N(chỉ vật) + which + S + V ...

`5,` Thailand is a country which has a lot of paddy fields

`->` N(chỉ vật) + which + V ...