`3.` They volunteer to help the victims whose houses were destroyed by a flood

`4.` John, whose colleagues were waiting for him yesterday there was planning to go to the conference

`5.` This waitress who was very impolite and impatient served us

`6.` I met Alice's father who was working at the university at the conference yesterday

`7.` The film The Dark which she watched last night terrified her a lot

`______________________`

`-` whose `-` thay thế cho TTSH

`@` N(người) + whose + N + V

`-` who `-` Thay thế cho chủ ngữ

`@` N(người) + who + V + O

`-` which `-` thay thế cho danh từ chỉ vật

`@` N(thing) + which + S + V

3. They volunteer to help the victims whose houses were destroyed by a flood

4. John whose colleagues were waiting for him yesterday there was planning to go to the conference

5. This waitress who was very impolite and impatient served us

6. I met Alice's father who was working at the university at the conference yesterday

7.  The film The Dark which she watched last night terrified her a lot

-------------------------------

=> S + whose + N + V + O

--> Thay thế cho chủ sở hữu của vật ( one's N/TTSH N )

=> S + who + V + P

--> Thay thế người

=> N + which + V + O

--> Thay thế vật