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Read the Look out! box. Then, using the words in brackets, rewrite the sentences so that they have the same meaning

5. Read the Look out! box. Then, using the words in brackets, rewrite the sentences so that they have the same meaning.

LOOK OUT!

a. must and have to are very similar. However, must often expresses the feelings of the speaker.

You must do more exercise. (That's my strong opinion.)

have to often expresses an external obligation.

You have to wear a helmet. (It's the law.)

b. mustn't and don't have to do NOT have the same meaning. don't have to = needn't, but mustn't means 'it is prohibited’. 

1. It isn't necessary for you to help me. (needn't)

2. It's compulsory for us to wear school uniform. (have to)

3. You aren't allowed to talk in the exam. (mustn't)

4. It's important that you listen to me. (must)

5. You needn't write the answer. (have to)

 

Cách làm cho bạn:

1. You needn't help me.

2. We have to wear school uniform.

3. You mustn’t talk in the exam.

4. You must listen to me.

5. You don’t have to write the answer.

 

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