1. I’ll always remember meeting him at HCM city.

remember + V_ing: nhớ sẽ làm gì trong tương lai.

remember + to V_inf : nhớ đã làm gì trong quá khứ.

2. I am always busy.

3. Don’t forget to write a letter to me.

forget + V_ing: quên sẽ làm gì trong tương lai.

quên + to V_inf : quên đã làm gì trong quá khứ.

4.

→Shall we go to the zoo ?

Shall + S + V_inf + O +... ?

→Let's go to the zoo.

Let's +V_inf + ...

→How about going to the zoo ?

How about + V_ing +...?

→Why don't we go to the zoo ?

Why don't + S + V_inf +... ?

5. May I have some more cakes ?

6. May I borrow your compass ?

May I + V_inf + ...?

7. Children are interested in picture book.

Like + V_ing = be interested in + Noun phrases/ V_ing +...

8. They enjoy going to the supermarket.

9. They enjoy playing volleyball.

10. She enjoys playing tennis.

Like + V_ing = enjoy +V_ing

11. She is interested in swimming.

12. How about seeing a detective film?

13. What about going to the countryside?

What about + V_ing + ...?

14. They enjoy going to the supermarket.

15. You ought to wash your hand before meals.

should/ ought to/ have to + V_ing... : nên làm gì

16. He always goes to school on time. 

17. What a amazing bathroom!

18. What an intelligent girl!

What + a/ an + adj + danh từ đếm được.. !

19. What awful weather!

What + adj + danh từ không đếm được ... !

20. My bike isn't as cheap as Minh's bike.

(My bike is more expensive than Minh's bike.)

$S_{1}$  + V + not + so/as + adj + as + $S_{2}$ 

21. His father is older than her father.

$S_{1}$ + V + adj_er + than + $S_{2}$

$S_{1}$ + V + more + adj + than + $S_{2}$