1.The Statue of Liberty was presented to the USA by France in 1876

Bị động qkđ: S+ was/were+ P2

2. Nam asked me if my grandparents still lived in Nha Trang then

Câu tường thuật: S+ asked sb+ if+ S+ V lùi thì

3. If I didn't much coffee, I could sleep at night

Câu dkd loại 2: If+ S+ Vqkđ, S+ would+ V

4. They have studied Spanish and Chinese for 5 years

htht: S+ have/has+ P2

= S+ started +Ving

5. No hotels were cheaper than this hotel in the town

ss hơn adj ngắn: tobe+ adj_er+ than

6. because he drove too fast, he caused a serious accident 

because+ clause= because of+ N/Ving: bởi vì 

`1.` The Statue of Liberty was presented to the USA by France in `1876`.

`->` Bị động thì QKĐ: S + was/were + P2 + (by O)

`2.` Nam asked me if my grandparents still lived in Nha Trang then.

`->` Câu tường thuật `-` yes/no question:
S + asked sb + if/whether + S + V (lùi thì)

`-` Lùi thì: HTĐ `->` QKĐ

`-` ĐTCTG: now `->` then

`3.` If I didn't much coffee, I could sleep at night.

`->` Điều kiện loại `2:`

`(-)` If + S + didn't + V-bare, S + would/could + V-bare

`4.` They have studied Spanish and Chinese for `5` years.

`->` S + started + V-ing + time + ago

`=` S + have/has + P2 + for + time

`5.` No hotels were cheaper than this hotel in the town.

`->` So sánh hơn `-` adj ngắn:
S + tobe + adj + -er + than + ...

`6.` Because he drove too fast, he caused a serious accident.

`->` Because + clause, clause: bởi vì...nên...