Mọi người giúp em bài tập này nha 

1. Why did you need to go to school last Saturday ? 

2. You shouldn't spend too much time playing games . 

3. The children need to wear a uniform 

4. You should say sorry to your parents 

5. You shouldn't drink so much coffee

6. He doesn't need to apologize 

7. We have to give him our answer today or we 'll lose out on the contract 

8. You should go and lie down 

9. You need / have to learn all the new words 

10. Do you need to attend every English lesson ? 

11. You should persuade Harry to take a holiday 

12. You shouldn't leave a child unsupervised 

13. You need to register in advance to take the course 

14. You don't need to read all those books 

15. You should persuade her to spend more time with you 

* Lý thuyết : 

+ It is necessary / unnecessary for s.o to do sth : cần thiết cho ai làm gì = S + have / need + to + V-inf : ai đó cần làm gì 

+ It is a good / bad idea for s.o to do sth = You should / shouldn't + V-inf : nên làm gì 

+ spend time / money + V-ing : dành thời gian / tiền bạc làm việc gì 

---------------- Chúc bạn học tốt %_% -----------------------------------

1. Why did you need to go to school last Saturday? 
2. You shouldn't spend too much time playing games. 
3. The children need to wear a uniform. 
4. You should say sorry to your parents. 
5. You shouldn't drink so much coffee.
6. He doesn't need to apologize. 
7. We have to give him our answer today or we 'll lose out on the contract.. 
8. You should go and lie down. 
9. You need / have to learn all the new words. 
10. Do you need to attend every English lesson? 
11. You should persuade Harry to take a holiday. 
12. You shouldn't leave a child unsupervised. 
13. You need to register in advance to take the course. 
14. You don't need to read all those books. 
15. You should persuade her to spend more time with you. 
`---------`
`@`  It is necessary / unnecessary for s.o to do sth : cần thiết cho ai làm gì  

`=` S + have/has/ need to + V-infinitive : ai đó phải làm việc gì 

`-` It is necessary (+ for somebody) + to do something: (ai đó) cần phải làm gì
`-` It is necessary + that + S + (should) + V (infinitive): Điều cần thiết mà ai đó cần làm

`@` it is a good/bad thing to 

`=`S + should + bare infinitive, should + have + past participle :  (ai đó) nên làm gì 

`@` S + spend + time/money + (on) + N/something : Dành thời gian, tiền bạc cho cái gì, việc gì đó

 `@` S + should/shouldn't + V(inf – nguyên thể) + O.