`7` Sydney, which is a city in Australia, is located by the sea.
`8` The 10-story building that/which is on Lavender Street is for rent.
`9` Greenhouse effect is on the rise, which has caused many consequences for the environment.

Câu trúc which: thay thế cho danh từ chỉ vật

N(thing)+ which+ V+ O.
N(thing)+ which+ S+ V.

Cấu trúc that: thay thế cho các đại từ quan hệ trên trong mệnh đề quan hệ xác định

N(person, thing)+ that+ V+ O.
N(person, thing)+ that+ S+ V.

`7` Sydney, which is a city in Australia, is located by the sea.

`8` The 10-story building which is on Lavender Street is for rent.

`9` Greenhouse effect is on the rise, which has caused many consequences for the environment.

1. WHO

….. N (person) + WHO + V + O

2. WHOM

…..N (person) + WHOM + S + V

3. WHICH

….N (thing) + WHICH + V + O

….N (thing) + WHICH + S + V