1. It took them 45 minutes to do their test

It takes + (O)+ time + to V..mất bao lâu để...

2. The girl whose family very well is a good person 

Dùng đại từ quan hệ WHOSE  cho sở hữu cách girl's family.

3. She doesn't understand the speech as quickly as he does ( từ ss hơn chuyển thành ss bằng) 

4. the doctor suggested I should rest after a hard - worrking week 

suggest + that clause ( S+should+V...)

1. It took them 45 minutes to do their test

It takes + (O)+ time + to V..ai đó mất bao lâu để làm gì ..

2. The girl whose family is very well is a good person 

Dùng đại từ quan hệ WHOSE  cho sở hữu cách girl's family.

3. She doesn't understand the speech as quickly as he does ( từ ss hơn chuyển thành ss bằng) 

Cấu trúc : S1 + V /V not + (O) +as +adj +as + S2 +(V)

4. cách 1. the doctor suggested I rest after a hard-working week 

- Cấu trúc : Ai đó khuyên ai làm gì:

S + suggest + (that) + S +(should) + Vo +...

4.cách 2. the doctor suggested resting after a hard-working week

 S + suggest + Ving + ....