The trian couldn't leave because there was a storm

-> The storm prevented

You should finsh your home work right now

-> It is time for you

-> It is time you

The question is very difficult, so I can't answer it

-> The question is too

-> The question is not

My sister drinks more milk than I

-> I drink

-> I don't Drink

He likes reading books btter than watching Tv

-> He prefers reading

-> He would prefer

-> He would rather

No one in my class can speak English as well as Phong

-> Phong can

`1.` The storm prevented the train from leaving.

`->` S `+` prevent (chia) `+` O `+` from `+` V-ing `:` ... ngắn ... khỏi làm gì ... 

`2.`

`->` It is time for you to finish your home work right now.

`->` It’s time `+` (for sb) `+` to V-inf ...`:` đã đến lúc … phải làm gì ...

`->` It is time you finished your home work right now.

`->` It’s time `+` S `+` V2/ed `:` đã đến lúc … phải làm gì ...

`=` S `+` should (not) `+` V-inf `:` Ai đó (không) nên làm gì ...

`3.`

`->` The question is too difficult for me to answer.

`->` The question is not easy enough for me to answer.

`-` Cấu trúc: S `+` V `+` ,so `+` S `+` V `:` vì vậy `+` mệnh đề kết quả.

`->` S `+` be/V `+` too `+` adj/adv `+` (for O) `+` to V

`->` ... quá ... để cho ... làm gì ...

`->` S `+` be/V (not) `+` adj/adv `+` enough `+` (for O) `+` to V

`->` ... (không) đủ ... để cho ... làm gì ...

`4.` 

`->` I drink less milk than my sister (does).

`-` Cấu trúc so sánh hơn kém với danh từ:

`->` S `+` be/V `+` more/fewer/less `+` N(s) `+` than `+` N/Pro N

`->` I don't drink milk as much as my sister.

`-` Cấu trúc so sánh bằng với danh từ:

`->` S `+` be/V `+` as `+` many/much/little/few `+` N(s) `+` as `+` ...

`5.` 

`->` He prefers reading books to watching TV.

`->` He would prefer to read books rather than watch TV.

`->` He would rather read books than watch TV.

`-` Cấu trúc: S `+` like `+` V-ing `+` better than `+` V-ing

`=` S `+` prefer `+` V-ing `+` to `+` V-ing

`=` S `+` would prefer `+` to V `+` rather than `+` V-inf

`=` S `+` would rather `+` V-inf `+` than `+` V-inf

`->` Ai đó thích làm gì hơn làm gì ...

`6.` Phong can speak English better than anyone in my class.

`-` Cấu trúc so sánh bằng dạng phủ định:

`->` `(-)` No `+` N `+` tobe/V not `+` as `+` adj/adv `+` as `+` N/pronoun 

`=` Cấu trúc so sánh hơn với tính từ `/` trạng từ:

`->` S `+` tobe/V `+` adj/adv-er/more + adj/adv `+` than `+` S2

1. The storm prevented the train from leaving.

2. C1: It's time for you to finish your homework.

    C2: It's time you finished your homework.

3. C1: The question is too difficult for me to answer.

    C2: The question is not easy enough for me to answer.

4. C1: I drink less milk than my sister.

    C2: I don't drink as much milk as my sister.

5. C1: He prefers reading books to watching TV.

    C2: He would prefer reading books to watching TV.

    C3: He would rather read books than watch TV.

6. Phong can speak English better than anyone else in my class.