LEARN THIS! 'Must' vs 'have to'
a. Must and have to both mean obligation. Must expresses obligation imposed by the speaker while have to expresses external obligation.
b. Mustn't: it’s necessary not to do something
You mustn't use a dictionary during your test.
c. Don't have to: it’s not necessary to do something
You don't have to answer all of the questions.
3. Read the Learn this! box. Underline must / have to + infinitive in the dialogue. Then complete the following sentences using 'must', 'mustn’t', 'have to', 'don’t have to'.
(Đọc Learn this! Gạch dưới must/have to + infinitive trong đoạn hội thoại. Sau đó hoàn thành các câu sau sử dụng 'must', 'mustn't', 'have to', 'don’t have to')
1. A hotel receptionist ____________ be good at communication.
2. You ____________ pay for the tickets in advance.
3. Examinees ____________ switch off all modern gadgets during the exams.
4. You ____________ leave litter lying around.
Bài Làm:
1. A hotel receptionist must be good at communication.
2. You have to pay for the tickets in advance.
3. Examinees must switch off all modern gadgets during the exams.
4. You mustn’t leave litter lying around.
In the dialogue:
- Freya: I must take it to my photography class today.
- Archie: Why do you have to bring it to class?
- Freya: Somebody must have used your account.
- Archie: You shouldn't have clicked on the link. You've possibly downloaded some malware onto your phone.
- Freya: Anyway, you need to warn your other friends. That email could have gone to everybody in your address book!
