`1.` This supermarket is less expensive than the one across the street ( less: ít hơn )

`2.` The English teacher has taught at our school for three years ( Thì hiện tại hoàn thành: S+have/has+ P.P+ for+time )

`3.` My doctor said that I shouldn't eat in front of the television ( S+ said that+ S+ should+ V-inf: khuyên )

`4.` If you don't study harder, you won't pass the exam ( Câu điều kiện loại I: If+ S+ HTĐ, S+ will/ can/may...+ V-inf )

`5.` Hanoi suburban areas are not as noisy as its urban district  ( So sánh bằng: S1+ be/V+ as+ adj/adv+ as+ S2 )

1. This supermarket is less expensive than the one across the street (so sánh ít hơn: S + V + less + adj/adv + than + S2)

2. The English teacher has taught at our school for three years (S + started/began + to-V/V_ing + khoảng thời gian + ago = S + have/has + p.p + for + khoảng thời gian)

3. My doctor said: "You should not eat in front of the television" 

- S + should/had better/ought to (not) do s.th

- If I were you, I would + V(inf)

- Why don't you ....?

`=>` S + advised s.one (not) to do s.th

4. If you don't study hard, you won’t pass the exam (Unless = If not; If1: If + S + V(s,es), S + will + V(inf)

5. Hanoi suburban areas are not as noisy as Hanoi urban districts (so sánh bằng: S + V + (not) + as + adj/adv + as + S2)