$\text{1.}$ How heavy is your suitcase?

$\text{→}$ What is the weight of + N?

$\text{2.}$ It is not easy to speak English fluently.

$\text{→}$ It + be + adj + to-V

$\text{3.}$ John used to smoke cigarettes when he was a young man.

$\text{→}$ used to-V: đã từng

$\text{4.}$ This house was built in 1995.

$\text{→}$ Bị động thì QKD: S + was/ were + PP + (by)

$\text{5.}$ His room is cleaned everyday.

$\text{→}$ Bị động thì HTD: S + is/ are/ am + PP + (by)

$\text{6.}$ If you don't get a bike, you can't get to school.

$\text{→}$ Unless = If not

$\text{7.}$ You will be asked a lot of questions.

$\text{→}$ Bị động thì TLD: S + will be + PP + (by)

$\text{8.}$ This computer isn't used.

$\text{→}$ Bị động thì HTD

$\text{9.}$ She works carelessly.

$\text{→}$ S + V + adv

$\text{10.}$ Despite his sickness, he still went to work.

$\text{→}$ Despite + N/ V-ing, S + V = Although + S + V, S + V

$1.$ How heavy is your suitcase?

- What is the weight = How heavy.

$2.$ It is not easy to speak English fluently.

- Gerund + tobe + adj = S + tobe + adj + to V.

$3.$ John used to smoke cigarettes when he was a young man.

- used to + V: Hành động đã từng xảy ra và kết thúc trong quá khứ.

$4.$ This house was built in 1995.

- S + was/ were + V (Pii) + (by O).

$5.$ His room is cleaned by him every day.

- S + is/ are + V (Pii) + (by O).

$6.$ If you don't get a bike, you can't go to school.

$7.$ You will be asked a lot of questions.

- S + will + be + V  (Pii) + (by O).

$8.$ This computer is used.

- S + is/ are + not + V (Pii) + (by O).

$9.$ She works carelessly.

- S + V (s/es).

- Sau động từ thường là trạng từ.

$10.$ Despite his sickness,  he still went to school.

- Despite + Noun/ Noun phrase/ V-ing, S + clause (Mặc dù).