Đề bài

3 Choose the correct options.

(Chọn những đáp án đúng.)

1 Students have to/must fill in a form to join the music club. It’s a rule.

2 I must/mustn't improve my computer skill. I want to become an IT technician in the future.

3 You don't have to/mustn't pick me up after school. I'm getting a ride home with Susan's mum.

4 A: How was your weekend, Sally?

B: Nothing special. I have to/had to do research for my presentation.

5 A: You don't have to/mustn't run in the school halls, children!

B: Sorry, Miss. We're late for our next class.

6 A: How was your presentation yesterday?

B: I mustn't/didn't have to give my presentation because my school organized a clean-up day.

Phương pháp giải

Modals + V nguyên mẫu

must/have to/don't have to - had to/didn't have to

must: nghĩa vụ, nhiệm vụ phải làm

have to/had to: luật lệ phải làm theo, điều cần thiết phải làm

don't have to/didn't have to: điều không cần thiết phải làm

mustn’t

Điều bị cấm, không được làm

Lời giải của GV Loigiaihay.com

1 Students have to fill in a form to join the music club. It’s a rule.

(Học sinh phải điền vào một mẫu đơn để tham gia câu lạc bộ âm nhạc. Đó là quy tắc.)

Giải thích: đây là quy tắc được đặt ra và phải tuân theo -> have to

2 I must improve my computer skill. I want to become an IT technician in the future.

(Tôi phải cải thiện kỹ năng máy tính của mình. Tôi muốn trở thành một kỹ thuật viên CNTT trong tương lai.)

Giải thích: đây là nhiệm vụ của bản thân cần phải làm -> must

3 You don't have to pick me up after school. I'm getting a ride home with Susan's mum.

(Bạn không cần phải đón tớ sau giờ học đâu. Tớ sẽ đi nhờ xe về nhà với mẹ của Susan.)

Giải thích: đây là điều không cần thiết phải làm -> don’t have to

4 A: How was your weekend, Sally?

(Cuối tuần của bạn thế nào, Sally?)

B: Nothing special. I had to do research for my presentation.

(Không có gì đặc biệt. Tớ đã phải làm nghiên cứu cho bài thuyết trình của tớ.)

Giải thích: đây là điều cần thiết phải làm và ở thì quá khứ -> had to

5 A: You mustn't run in the school halls, children!

(Các em không được chạy trong sảnh trường!)

B: Sorry, Miss. We're late for our next class.

(Xin lỗi, thưa cô. Chúng em bị trễ giờ học tiếp theo.)

Giải thích: đây là điều đi ngược lại luật, bị cấm không được làm -> mustn’t

6 A: How was your presentation yesterday?

(Bài thuyết trình của bạn hôm qua thế nào?)

B: I didn't have to give my presentation because my school organized a clean-up day.

(Tớ không phải thuyết trình vì trường tớ đã tổ chức một ngày dọn dẹp.)

Giải thích: đây là điều không cần thiết phải làm trong quá khứ -> didn't have to

Xem thêm : Tiếng Anh 8 - Right on!

Báo lỗi - Góp ý

BÌNH LUẬN

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Các bài tập cùng chuyên đề

Bài 1 :

1. Study these sentences. Then complete rules 1-4.

(Nghiên cứu những câu dưới đây. Sau đó hoàn thành quy tắc 1-4.)

You have to be a really strong swimmer.

(Bạn phải là một vận động viên bơi lội thực sự mạnh mẽ.)

I must get really good marks.

(Tôi phải đạt điểm thật cao.)

I don't have to make a decision right now.

(Tôi không phải đưa ra quyết định ngay bây giờ.)

My friends say I should become a nurse.

(Bạn bè của tôi nói rằng tôi nên trở thành một y tá.)

You mustn't do something you aren't sure about.

(Bạn không được làm điều gì đó mà bạn không chắc chắn.)

I don't need to do an apprenticeship.

(Tôi không cần học nghề.)

RULES

1. We use ……….. to say something is necessary because of a situation or a rule.

We use ……… and need to when the speaker feels that it is very important to do something, or when we talk about written rules.

2. We use ….…… and its negative form ………. to give advice, or to say something is a good or bad idea.

3. We use ………. to talk about something that is prohibited.

4. We use ....…. and ………. something to say isn't necessary.

Xem lời giải >>

Bài 2 :

2. Complete the school rules using the verbs in exercise 1.

(Hoàn thành các quy định của trường sử dụng các động từ trong bài tập 1.)

SCHOOL RULES

1. Students ……. arrive at school before the bell rings.

2. Students ……. wear school uniforms, but they ….... dress smartly.

3. Students ……. cheat in exams.

4. Students …….. do their homework on time.

5. Students ……. ask for help if they feel they're not making progress.

Xem lời giải >>

Bài 3 :

3. Study these situations. Write sentences describing the solution using the verbs in brackets.

(Nghiên cứu những tình huống này. Viết câu mô tả giải pháp sử dụng các động từ trong ngoặc.)

Lee wants to be a doctor. He spends all his time watching TV. (need to)

Lee needs to study more.

1. Chad has an interview for college on Monday. He has a busy weekend planned with his friends. (shouldn't)

2. Rea is studying to be a physicist. She isn't very good at maths. (have to)

3. Marina talks too much in class. She failed her last history test. (mustn't)

4. Aidan is a homeschooler. He wants to have more friends. (should)

5. It's the summer holidays. Nicola's still studying. (don't have to)

Xem lời giải >>

Bài 4 :

12. Choose the correct words.

(Chọn từ đúng.)

1. You mustn't / don’t have to / don’t must cheat in exams.

2. If you need help, you should to / need / should talk to your teacher.

3. I’m not thirsty, so I shouldn’t / don’t need / needn't to stop and have a drink.

4. You mustn't / don’t need / don’t have to do this extra homework. It’s your choice.

5. We must / have / need arrive on time to school every day.

6. Rosie has / have / need to catch the next bus.

Xem lời giải >>

Bài 5 :

4 Choose the correct options.

(Chọn những đáp án đúng.)

1 You study harder if you want to improve your English.

A could B must C can D had to

2 your notes? I missed the class yesterday.

A Must I borrow C Do I have to borrow

B Should I borrow D Can I borrow

3 He ___ help me with the project because I knew what to do.

A shouldn’t B didn’t have to C doesn't have to D couldn't

4 Barry ___ read well when he was seven.

A can B had to C could D should

5 My mum ___ wear a uniform when she was at school.

A must B had to C can D should

6 We___ take any books into the exam room. It’s against the rule.

A mustn’t B don’t have to C shouldn't D must

Xem lời giải >>

Bài 6 :

5 Ask and answer about your school life using modals.

(Hỏi và trả lời về cuộc sống học đường của em bằng cách sử dụng các động từ khuyết thiếu.)

A: Do you have to wear a school uniform?

(Bạn có phải mặc đồng phục học sinh không?)

B: No, but we mustn't be late for class.

(Không, nhưng chúng tớ không được trễ học.)

Xem lời giải >>

Bài 7 :

5 Choose the correct options.

(Chọn những đáp án đúng.)

1 You mustn't/don't have to talk in the library. It's against the rules.

2 I must/mustn't improve my presentation skills to be a good presenter.

3 You can't/don't have to bring your tablet. I'll bring mine.

4 You could/should go to sleep early the night before the exam.

5 Can/Should we play baseball after school, please?

6 You shouldn't/couldn't be stressed about exams. It's not good for your health.

7 You have to/should wear a uniform to school. It's a rule.

Xem lời giải >>

Bài 8 :

1 Choose the correct options.

(Chọn các đáp án đúng.)

1 do my homework on Sunday, not now? I want to go shopping now.

A Do I have to B Can I C Should I D Must I

2 You copy from another student on a test. It's against the rules.

A haven't C couldn't

B don't have to D mustn't

3 Because you're sitting an exam tomorrow, you go to bed early.

A can B could C should D mustn't

4 Sylvia present her ideas to the class very clearly. She should be our speaker.

A can B must C should D has to

5 We do the test yesterday because our teacher was off.

A shouldn't

B can't

C didn't have to

D mustn't

6 Molly swim when she was four.

A could

B can

C should

D must

7 You pick me up after football practice. David's mum is taking me home.

A don't have to

B couldn't

C shouldn't

D mustn't

8 Fiona do all her homework before she can play computer games.

A has to

B can

C could

D had to

Xem lời giải >>

Bài 9 :

2 Rewrite the sentences using the words in brackets.

(Viết lại các câu sử dụng các từ trong ngoặc.)

1 The students have an obligation give their presentations at school tomorrow. (MUST)

2 It's against the rules to be late for the class. (MUSTN'T)

3 It was necessary for him to bring money for lunch on the school trip. (HAD TO)

4 You don't have permission to enter this room. (CAN'T)

5 I don't think it's a good idea for you to play computer games every day. (SHOULDN'T)

Xem lời giải >>

Bài 10 :

Choose the letter A, B, C or D to complete the sentences.

Before beginning the meal, we should __________ for the oldest person to start.

A.

wait
B.

to wait
C.

waiting
D.

waited

Xem lời giải >>

Bài 11 :

Choose the letter A, B, C or D to complete the sentences.

He __________ try to be more punctual; or else, the manager will get angry.

A.

must
B.

should
C.

need
D.

may

Xem lời giải >>

Bài 12 :

1. Complete the table with the correct form of have to, need to, must and should.

(Hoàn thành bảng với dạng đúng của Have to, Need to, Must và Should.)

Xem lời giải >>

Bài 13 :

2. Make sentences using have to, need to, must and should.

(Đặt câu sử dụng must, need to, must và nên.)

Alfie / not need / study / foreign languages.

Alfie doesn't need to study foreign languages.

(Alfie không cần học ngoại ngữ.)

1. you / not must / forget

………………………………………………….

2. he / should / do more homework

………………………………………………….

3. we / not have / wear school uniforms

………………………………………………….

4. James / need / work harder in class

………………………………………………….

5. Matilda / have / pass the exam

………………………………………………….

6. you / not should / go to bed so late

………………………………………………….

7. we / not must / use phones in class

………………………………………………….

8. they / not have / go to school today

………………………………………………….

Xem lời giải >>

Bài 14 :

3. Correct the words.

(Sửa lại lời nói.)

The Duke of Edinburgh’s Award

This award scheme for young people is now nearly sixty years old, and operates in 140 countries. You need-complete need to complete a number of different tasks to get a bronze, silver or gold award. Years ago, girls couldn't take part, but now you 1 have be ………… a boy to get involved. There are five different types of tasks that you 2 must to do ………………

1. Volunteering

You 3 should helping ……………… charity or people in your community.

2. Physical activity

This 4 has to be ……………… a team sport, but it should be connected to fitness.

3. Skill

Participants can choose a practical skill they would like to to improve, such as singing or painting.

4. Expedition

Each person 5 should to …………… plan an adventurous journey to go on.

5. Residential stay

This task involves working in a team and staying away from home for five days. You 6 don't need …………… work well with others to complete this task.

Xem lời giải >>

Bài 15 :

4. Invent an award for young people. Decide the things you have to do to get it. Include have to, need to, must and should in your answer.

(Phát minh ra một giải thưởng cho những người trẻ tuổi. Quyết định những điều bạn phải làm để có được nó. Bao gồm phải, cần, phải và nên trong câu trả lời của bạn.)

The award is called the Young Helper's Award. It's for giving help to your community. You must decide who or what to help, such as other students or animals in need. To get the award, you have to spend a few hours a week doing it.

(Giải thưởng này được gọi là Giải thưởng Người giúp việc Trẻ. Đó là để giúp đỡ cộng đồng của bạn. Bạn phải quyết định giúp đỡ ai hoặc giúp đỡ điều gì, chẳng hạn như những học sinh khác hoặc động vật đang cần giúp đỡ. Để nhận được giải thưởng, bạn phải dành vài giờ mỗi tuần để làm việc đó.)

Xem lời giải >>

Bài 16 :

have to / need to / must / should

3. Find and correct the mistakes.

(Tìm và sửa lỗi.)

Let's go! We haven't to be late. mustn't be

(Đi nào! Chúng ta không được đến muộn.)

1. We're playing in the final of the competition next week, so I need be fit.

2. Should we to go to bed earlier?

3. You don't have to be late for class.

4. Do you must wear a uniform at your school?

5. They should don't talk during class.

6. Have you to do extra homework?

Xem lời giải >>

Bài 17 :

4. Complete the dialogue with must, mustn't, don't have to, should or shouldn't.

(Hoàn thành đoạn hội thoại với phải, không được, không cần phải, nên hoặc không nên.)

Joe: What do I need to know about this sport?

Max: First of all, you should wear warm clothes because it's a winter game that we play outdoors. Players 1 ……………. usually wear green, but people don't worry too much about that.

Joe: OK, and how about safety equipment?

Max: Oh, you 2 …………… wear that because the ball isn't hard. And the rules say that ypu 3 ……….. touch another player, so it's a safe game.

Joe: Good! I'll tell my mum that she 4 …………….. worry about me playing it, then! What else?

Max: Well, it's OK to pick up the ball and throw it, but you 5 …………… run with it in your hands.

Joe: And how about kicking it with your feet? Max Everyone can do that, except the goalies. They 6 ……………. only use their hands. Joe Oh! It's very different from football, then?

Max: Yes, it is.

Xem lời giải >>

Bài 18 :

2. Fill in each gap with mustn't, can, have to, had to, could or couldn't.

(Điền vào mỗi khoảng trống với mustn't, can, have to, had to, could hoặc could't.)

1. You _______ eat or drink in the computer room. It's against the rules.

2. _______ I go out after I finish my homework, Dad?

3. A: Alfie _______ do his homework yesterday because he left his book at school.

B: I forgot mine, too, but _______ go back to get it.

4. A: Janie _______ read and write when she was just 4 years old. Her parents taught her.

B: Really?

5. A: I'm going to the cinema. Do you want to come with me?

B: No, thank you. I _______prepare for my presentation.

Xem lời giải >>

Bài 19 :

3. Complete the email with can (x2), had to, couldn't, don't have to and should.

(Hoàn thành email với can (x2), had to, could not, don't have to và should.)

Hi Jenny,

Sorry I 1) _______ email you last night because I 2) _______ study for my exams. It's really difficult! I 3) _______ solve maths problems easily, but I'm not good at history and I know you are. 4) _______ you help me, please? If you help me, I'll do something for you. There's a food festival this weekend. You 5) _______ come with me - we'll have a great time! Think about it. The good thing is that I 6) _______ study for the exams tonight because Mum is taking me shopping.

Bye!

Ruby

Xem lời giải >>

Bài 20 :

5. Fill in each gap with can, must, don't have to, had to or shouldn't.

(Điền vào mỗi khoảng trống với can, must, don't have to, had to hoặc should not.)

1. In many schools in the USA, students _______ wear school uniforms.

2. _______ I watch TV this evening?

3. I _______ do my homework now.

4. Ben _______sit exams last week.

5. You _______ play computer games all night. It's unhealthy.

Xem lời giải >>

Bài 21 :

Modals

(Động từ khuyết thiếu)

1. Choose the correct options.

(Chọn các phương án đúng.)

1. A: I don't know what to talk about in my presentation.

B: I think you have to/should talk about your favourite sport.

2. A: What do I have to/can I tell the librarian to get a library card?

B: She needs your name and address. It's a rule.

3. A: This suitcase is really heavy. Can/Must you help me with it?

B: Of course.

4. A: You don't have to/mustn't run in the classroom.

B: I know. The teachers told us the classroom rules.

5. A: Ken is a great cricket player.

B: Yes, he has to/can hit the ball really far.

Xem lời giải >>

Bài 22 :

2. Choose the correct options.

(Chọn các phương án đúng.)

1. Did you have to/Could you sit exams last week, Linh?

2. Students mustn't/don't have to eat or drink during the lessons.

3. I can/must do my homework before I go out.

4. I have to/can wear a school uniform. It's a rule.

5. Students couldn't/shouldn't spend too much time online.

6. You don't have to/mustn't run near the pool. It's against the rules.

7. Could/Can you swim when you were eight, Claire?

8. You can't/don't have to pick me up after the piano practice. I'm getting a ride home with John's dad.

Xem lời giải >>

Bài 23 :

3. Choose the correct options.

(Chọn các phương án đúng.)

New School Advice

I remember the first time I 1) could/had to start at a new school. I 2) couldn't/didn't have to make friends at first and it was really hard. However, after some time, I met new people and things got better. If you 3) should/have to start at a new school, I have some advice. You 4) should/shouldn't join after-school activities. For example, you 5) can't/can join a sports team or the science club. It's a great way to make friends and you 6) don't have to/mustn't try hard at all.

Xem lời giải >>

Bài 24 :

4. Rewrite the sentences with the models in brackets.

(Viết lại các câu với từ khuyết thiếu trong ngoặc.)

1. Is it OK if I go to the park after school today? (can)

(Hôm nay tôi đi công viên sau giờ học có được không?) (có thể)

2. It's my obligation to be at football practice on time. (must)

(Tôi có nghĩa vụ phải đến sân tập bóng đá đúng giờ.) (phải)

3. It isn't a good idea for you to play video games for hours every day. (shouldn't)

(Nó là không tốt khi bạn chơi trò chơi điện tử hàng giờ mỗi ngày.) (không nên)

4. It's necessary for you to set your phone to silent in the library. (have to)

(Nó là cần thiết cho việc bạn đặt điện thoại ở chế độ im lặng trong thư viện.) (phải)

5. You have permission to play games after you finish your homework. (can)

(Bạn được phép chơi trò chơi sau khi hoàn thành bài tập về nhà.) (Có thể)

6. It's a good idea to drink a lot of water when you exercise. (should)

(Nó là ý tưởng tốt cho việc uống nhiều nước khi tập thể dục.) (nên)

7. It's against the rules to use smartphones in class. (mustn't)

(Sử dụng điện thoại thông minh trong lớp là vi phạm nội quy.) (không được)

8. Peter didn't give a presentation last week. It wasn't necessary. (didn't have to)

(Peter đã không thuyết trình vào tuần trước. Nó không cần thiết.) (không phải)

9. It's not necessary for you to walk home from your music class because I'll pick you up. (don't have to)

(Bạn không cần thiết đi bộ từ lớp âm nhạc về nhà vì tôi sẽ đón bạn.) (không cần phải)

10. You don't have permission to eat in the classroom. (can't)

(Bạn không được phép ăn trong lớp học. (không thể))

Xem lời giải >>

Bài 25 :

Fill in the blank with the correct form of the verb.

According to tradition, you shouldn’t ___________(sweep) the floor on the first day of Tet.

Xem lời giải >>

Bài 26 :

Rewrite the sentence.

It’s a good idea to wear a warm coat.

→ You should ________________________.

Xem lời giải >>