`21.` I'd rather go to the museum.

`@` Cấu trúc:

S + would rather + V_nguyên thể + O...

`22.` Would you mind if I borrow your pen?

`@` Cấu trúc:

Would + S + mind + if + S + V(hiện tại) + O...?

`23.` It is easy to boil an egg.

`@` Cấu trúc:

It + be + adj + to + V_nguyên thể + O...

`24.` The pyramids were built by the ancient Egyptians.

`@` Câu bị động thì quá khứ đơn: 

S(O) + was/were + `V3` + (by + smb).

`25.` London isn't as hot as Cario.

`@` So sánh bằng:

$S_1$ + be + as/so + adj + as + $S_2$.

`26.` I have not been to Hanoi for two years.

`@` Câu phủ định thì hiện tại hoàn thành:

S + have/has + not + `V3` + O...

`27.` The thief runs faster than the policeman.

`@` So sánh hơn:

$S_1$ + V + more + long adv/short adv + đuôi -er + than + $S_2$.

`28.` This is the first time I have seen this man.

`@` Cấu trúc:

This is the first time + S + have/has + `V3` + O...

`29.` 

`=>` We think the novel is very interesting.

`=>` We find the novel interesting.

`@` Cấu trúc:

S + think + V_ing + O/N + be + adj.

S + find + V_ing + O/N + adj.

`30.` It took the flight to Moscow three and a half-hour.

`@` Cấu trúc:

It takes + S + time + to + V_nguyên thể + O...

`\color{white}{\text{#Hoidap247}}`

`\color{white}{\text{@Angelinazuize}}`

`21`.I'd rather not go to the museum

`\rightarrow` S + would rather + ( not ) + V-inf : Muốn làm gì

`22`.Would you mind borrowing your pen ?

`\rightarrow` Would you mind + V-ing ? : Bạn có phiền ?

`23`.It is easy to boil an egg

`\rightarrow` It is ( not ) + adj ( for O ) + to do sth : Như thế nào để làm gì

`24`.The pyramids were built by the ancient Egyptians

`\rightarrow` BĐ `-` QKĐ : S + was / were + VpII ( by O )

`25`.London isn't as hot as Cairo

`\rightarrow` So sánh ngang bằng :

`=>` S1 + is / am / are / ... ( not ) + as + adj + as + S2

`26`.I have not been in Ha Noi for `2` years

`\rightarrow` Thì HTHT ( PĐ ) : S + haven't / hasn't + VpII

`\rightarrow` For + Khoảng thời gian : Bao lâu

`27`.The thief runs faster than the policeman

`\rightarrow` So sánh hơn ( Trạng từ ) :

`=>` S1 + V + adv-er / more adv + than + S2

`\rightarrow` fast ( adj / adv ) `->` faster ( SSH ) `->` the fastest ( SSN ) : nhanh

`28`.This is the first time I have seen this man

`\rightarrow` This is the + first / second / third / ... + S + have / has + VpII

`=>` Đây là lần ... đã làm gì

`29`.We are interested in the novel

`\rightarrow` be interested in + V-ing / sth : Hứng thú cái gì

`30`.It took three and a half hour to fly to Moscow

`\rightarrow` It + takes / took + O + time + to do sth : Mất thời gian để làm gì

`\text{# TF}`