7. Complete the following sentences, using must/ mustn't, and the words given.

(Hoàn thành các câu sử dụng must/ mustn't, và các từ được cho.)

1. If you are sick, you/ go to see the doctor.

___________________________________

2. When you are on the airplane, you/shout.

___________________________________

3. Before you go to bed, you/brush your teeth.

___________________________________

4. When you are in the library, you/ talk loudly.

___________________________________

5. When you are doing an English test, you/ use a dictionary.

___________________________________

6. When you are in a car, you/ fasten your seat belt.

___________________________________

Modal verb: must/ mustn’t

(Động từ khuyết thiếu: phái/ không được)

4. Fill each blank with must or mustn't.

(Điền vào mỗi chỗ trống với must hoặc mustn’t.)

1. You_________leave the hotel room before 12 o'clock.

2. You_________make lots of noise in the museum.

3. My mum says you_________always tell the truth.

4. You know you_________go to bed with your shoes on.

5. I want to speak English better. I_________practise more.

5. Read the classroom rules below. Write some more rules for you and your classmates.

(Đọc quy định trong lớp học bên dưới. Viết một số quy định cho em và các bạn trong lớp của em.)

1. We must arrive on time.

(Chúng ta phải đến đúng giờ.)

2. We mustn't pick flowers in the school garden.

(Chúng ta không được hái hoa trong vườn trường.)

3. We must...........................

4. We mustn't ......................

5. .........................................

5. Complete the dialogue, using must / mustn't.

(Hoàn thành bài hội thoại sử dụng must/ mustn’t.)

A: It's dangerous to go hiking there. You (1)________ tell someone where you are going.

B: Yes. And I (2) ________ take a warm coat. it's very cold there.

A: Right. But you (3) ________ bring any heavy of unnecessary things with you.

B: OK, and I (4) ________ take a mobile phone. It's very important.

A: And you (5) ________ forget to bring a compass.

have to - don't have to

Exercise 2. Read the theory box. Use the information in the leaflet to complete the sentences. Use have/has to, don't / doesn't have to.

(Đọc khung lý thuyết. Sử dụng thông tin từ tờ rơi để hoàn thành các câu. Sử dụng have/ has to, don’t/ doesn’t have to.)

1. We ____________ keep the campsite clean.

2. Campers ____________ pack a first aid kit.

3. John ____________ leave his dog at home.

4. We ____________ put out the fire with water.

2. Study the Grammar box. Find examples of have to, don’t have to and mustn’t in paragraph A of the text.

(Nghiên cứu hộp Ngữ pháp. Tìm các ví dụ về phải, không cần và không được trong đoạn A của văn bản.)

3. Read paragraph B of the text and choose the correct option. Listen and check.

(Đọc đoạn B của văn bản và chọn phương án đúng. Nghe và kiểm tra.)

B: In Japan you ¹have to/mustn't take off your shoes when you visit someone's home. But in France you ²have to / don't have to take off your shoes - you can keep them on. Austrians are very punctual, so you ³don't have to / mustn't be late for a meeting in Vienna. In Germany you ⁴have to / don't have to wait for the green light to walk across the street, but in Egypt you ⁵have to / don't have to wait - you can cross any time! And in Singapore you ⁶have to / mustn't chew gum in public.

4. In pairs, complete the sentences with have to, don’t have to or mustn’t. Listen and check.

(Theo cặp, hoàn thành các câu với have to, don’t must hoặc mustn’t. Nghe và kiểm tra.)

In Britain:

1. you _________ queue at the bus stop when you're the only person there.

2. you ________say ‘please’ and ‘thank you' a lot.

3. you ________ forget to say ‘thank you" when someone opens a door for you.

In Spain:

4. You _______ say ‘please’ or ‘thank you" in a café.

5. you _______ give a friend two kisses when you meet.

6. you _______ forget to kiss everyone goodbye.

5. Match sentences 1-5 with notices A-E.

(Nối câu 1-5 với thông báo A-E.)

1. You have to walk here.

2. You don’t have to eat here, but you if you want.

3. You mustn’t use your phones in class.

4. You have to talk in English all time.

5. You mustnt’t say anything at this time.

6. Complete the sentences with have to, don’t have to or mustn’t so they are true for you. In pairs, compare your answers.

(Hoàn thành các câu với have to, don’t must hoặc mustn’t để chúng đúng với bạn. Theo cặp, hãy so sánh các câu trả lời của bạn.)

1. I ______ take a bus to school at 6:30 everyday.

2. I ______ be late for school.

3. I ______ use mobile phones in class.

4. I ______ ‘thank you’ when someone gives me a present.

5. In my family I ______ sleep a siesta when I don’t want to.

I don't have to take a bus to school at 6:30 everyday. What about you?

(Tôi không phải đi xe buýt đến trường lúc 6:30 mỗi ngày. Còn bạn thì sao?)

5. Complete the sentence with the correct forms of have to, don’t have to or mustn’t. Write two simmilar sentences about your country.

(Hoàn thành câu với các dạng đúng của have to, don’t have to hoặc mustn’t. Viết hai câu tương tự về đất nước của bạn.)

1. In many African countried you have to use your right hand to eat – you _______ eat with your left hand.

2. In some countries, like Germany, you _______ cross the road when the light is red. You _______ wait for the green light. In other places you can cross the road when you like - you _______ wait for the green light.

3. In Switzerland you _______ throw things on the street – you _______ put them in a bin.

6. Tick Y (Yes) or N (No) for these sentences.

(Tích vào Y (đúng) hoặc N (sai) cho các câu này.)

3. Work in groups. Take turns to tell others the rules of the Geography Club, using must / mustn't and the following cues. 

(Làm việc nhóm. Lần lượt nói cho những người khác biết các quy tắc của Câu lạc bộ Địa lý, sử dụng must / not và các dấu hiệu sau.)

Choose the best answer to complete the sentence.

You _____ pick up flowers in the school garden.