All students must / have to / has to post their assignments on the online discussion forum today

Giải SBT Tiếng Anh 11 trang 43 Unit 5D. Grammar - Friends Global

1. Circle the correct modals to complete the sentences.

(Khoanh tròn các phương thức đúng để hoàn thành câu.)

1 All students must / have to / has to post their assignments on the online discussion forum today.

2 There's still some pizza. We mustn't / have to / don't have to buy more

3 Juliet can't have / may have / must have gone on holiday. She was at school yesterday!

4 I didn't get your email. Do you think you can't have / could have / must have sent it to my old email address?

5 Your smartwatch probably is dead again. You mustn't / must / don't have to let the batteries charge fully before using.

6 The school show is on YouTube. Our teacher can't have / might have / must have uploaded it.

7 You are going 130 km in less than an hour. You mustn't / can't have to / must drive very fast!

8 Maxisn't replying to my texts. He can't have / might have / must have taken his phone with him.

Phương pháp giải:

- must + Vo: chắc chắn / bắt buộc phải

- have to + Vo: phải

- mustn’t + Vo: không được

- don’t have to + Vo: không cần

- động từ khiếm khuyết + have V3/ed: dự đoán một việc trong quá khứ.

Lời giải chi tiết: