1. Although he works hard, he can't support his large family

- Although + clause, clause: Mặc dù

- Despite / In spite of + N / V - ing, clause: Mặc dù

2. Mary suggested that we should go out for dinner

- S + suggest ( chia ) + ( that ) + S + ( should ) + V - inf

3. John is not old enough to understand the question

- Too adj to V: Quá ... để mả

- Be not adj enough to V: Chưa đủ ... để mà

4. I haven't heard from my sister for 5 years

- The last time + S + V2 / ed + O + was + thời gian + ago

- = S + have / has + not + O + for / since + thời gian

5. It was such a heavy box that my son couldn't carry it

- So adj that S V: Quá ... để ai đó làm gì

- Such ( a / an ) adj + N + that + S + V

`color{red}{#Atr}`

`1.` Although he works hard, he can't support his large family.

`-` Mệnh đề chỉ sự nhượng bộ:

`@` Despite / In spite of + N / NP / V-ing, clause

`=` Although / Though / Even though + clause, clause: mặc dù

`2.` Mary suggested going out for dinner.

`-` suggest doing sth: gợi ý làm gì đó

`3.` John isn't old enough to understand the question.

`-` S + be + too + adj + to V-bare + O: quá đến nỗi

`=` S + be (not) + adj + enough + (for sb) + to V-bare + O: (không) đủ để làm gì

`4.` I haven't heard from my sister for `5` months.

`-` Sự chuyển giao từ thì QKĐ `->` HTHT:

`@` The last time + S + V2/ed + O + was + time ago

`=` S + have/has + not + Vpp + O + for/since + time

`5.` It was too heavy a box for my son to carry.

`-` S + be + so + adj + that + clause

`=` S + be + too + adj + N + (for sb) + to V-bare

`=>` Quá đến nỗi