cho nửa đường tròn (O) đường kính AB từ điểm M trên tiếp tuyến Ax của nửa đường tròn ta vẽ tiếp tuyến thứ 2 MC hạ CH vuông góc với AB, MB cắt (O) TẠI Q và cắt CH tại N

a) CM MA²=MQ.MB

b) MO cắt AC tại I. CM tgiac AIQM nội tiếp 

c) CM CN=NH

một công nhân phải làm xong 210 sp trong thời gian quy định sau khi làm được 2h với năng suất dự kiến người đó đã cải tiến các thao tác kĩ thuật nên mỗi giờ làm thêm được 3sp vì vậy người đó đx hoàn thành kế hoạch sớm hơn quy định 2h tính số sp người đó dự kiến làm trong mỗi h

cho hai hàm số y=x² và y=x+2

a)vẽ đò thị hàm số này cùng một mặt phẳng toạ độ

b)tìm toạ độ giao điểm C,D của hai đồ thị đó

c)gọi H,K là hình chiếu C.D trên Ox,tính diện tích hình thang CHKD

một hình lập phương có cạnh 2,6 dm. tính diện tích xung quanh; diện tích toàn phần của hình lập phương và thể tích của hình lập phương

Exercise 1: Change from in spite of/ despite ®although/though/even though.

1. Despite my warning, they went ahead with their plan.

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2. They went swimming in spite of the coldness of the water.

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3. In spite of being bad at pool, she beat him three times in a row.

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4. She decided to go abroad for a year despite loving her boyfriend very much.

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5. He went on holiday to Thailand in spite of the expensive airfare.

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6. Socrates never had much money despite being very famous in his own day.

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7. His career did not really take off despite his ambitions.

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8. They managed to work together despite their differences of opinion.

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9. Despite my headache I enjoyed the film.

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10. Despite having enough money, he refused to buy a new car.

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Exercise 2: Change from although/ though/ even though ®in spite of/ despite, starting as available.

1. Although he was tired, he walked to the station. Despite

2. Although it was noisy, the children slept well. The children

3. Though Linda earned a low salary, she gave money to her parents. In spite of

4. Tom went to work even though he didn’t feel very well. Tom

5. Their new product turned out to be a success though the market studies were pessimistic. Their

6. Julie failed the exam though she worked very hard. Julie

7. Although John got the highest result in the class, he still had problems with the teacher. In spite of

8. Although it was difficult, they managed to climb to the top of the mountain. In spite of

9. Even though he is a little overweight, he is actually quite fit. Despite

10. Although politicians are necessary for democracy, they are still liars and thieves. In spite of

1. Valencia is a fantastic place although/ despite being too hot in July and August

2. Cars are very useful in the city though/ in spite of they are expensive.

3. She’s a great person in spite of/ even though getting jealous over stupid things sometimes

4. In spite of/ despite of getting the highest result in the class, John still had problems with the teacher

5. The best things in life are free though/ even though love is often very expensive

6. I phone my brother in Thailand using Skype nearly every day despite/ though the time difference.

7. In spite/ In spite of losing her way twice, she arrived safely.

8. Although/ in spite of the fact the sun was shining, the water was cold.

9. Despite/ although he being hard working, Kevin failed the examination.

10. We stayed up late in spite of/ although we were tired.

Exercise 1. Supply the correct verb form: Past simple or Present Perfect

1. Mr. Green (teach) ………English in this school since he (graduate)…………. from the university in 1986.

2. He (write) …………..a book since last year.

3. You (watch) ………………TV last night?

4. I (read) ……………..the novel written by Jack London several times before.

5. Someone (steal) ………………my handbag on the bus.

6. Last month, I (be) …………………..in the hospital for ten days.

7. My father (not smoke) ………………..for 5 years.

8. You (receive) ………………any letter from your parents yet?

9. He (leave) home two weeks ago and we (not hear)………………….. from him since then.

10. A: You (speak)………………. to Mrs. Baker yesterday?

      B: No, I (not see) ………………….her for a long time.

      A: I (not can) remember when I last (see)………………… her.

11. My brother (join) ……………the army when he (be)……………….. young.

12. Mr. Jackson (paint) ………………….his house since last month.

13. Columbus (discover) …………………..America more than 400 years ago.

14. We (study)……………. French for five years at school but we (not learn)………. very much.

15. A: You (teach) ………………….English before?

      B: Yes, I (have)…………….. I (teach) …………….English for three years in Hong Kong and when I (come)………… back, I (start) …….teaching at the Kensington school of English and I (teach) …….there since then.

16. A: I (see) ………………..Jack last night.      

      B: Oh really? I (not see) ……………….  him for three months. How is he?

17. A: you (ever/win) …………….. a competition?   B: Yes, I (win) ……..…... a photographic competition in 2001.

18. George (work)……………. at the university so far.

19. We (not live)…………….. in England for two years now.

20. When I (be) ……………a child, I (want) ………………..to be a doctor.

Exercise 2. Rewrite the following sentences using the words given:

1. We last saw Tom when I moved to Bristol.

àWe haven’t ………………………………………………………….

2. She (last) wrote to me nearly 2 years ago.

àShe hasn’t. ………………………………………………………….

3. This film was (last) shown on TV nearly 10 years ago.

à This film. …………………………………………………………..

4. She last swam in the river 3 years ago.

àShe. …………………………………………………………………

5. I last visited the city museum 5 years ago.

àI haven’t.……………………………………………………………

 6. I haven’t attended the club since 1988.

àI last ………………………………………………………………...

 7. I haven’t seen him for 2 months.

àI last ………………………………………………………………..

 8. I haven’t gone swimming for 2 years.

à I last ……………………………………………………………….

Exercise 3. Rewrite the following sentences, using the words given.

1. Tom began playing the piano 4 years ago.

àTom has                                                                                                           .

2. I started cooking for the party 4 hours ago.

àI have                                                                                                               .

3. She started working as a secretary 2 years ago.

àShe                                                                                                                   .

4. My father is reading a newspaper. He started 2 hours ago.

àMy father                                                                                                         .

5. My sister began to study English a year ago.

àMy sister                                                                                                          .

6. Scientists began to fight against AIDS in 1980.

àScientists have________________________________________________ .

7. The Browns have been living in London for 20 years.

àThe Browns began_____________________________________________ .

8. John has worked for this electronics firm since 1999.

àJohn started__________________________________________________ .

9. Women have been fighting for their rights since the middle of the 20^th century.

àWomen began_________________________________________________ .

10. Jack and Jill have learned to drive for 2 weeks.

àJack and Jill started____________________________________________ .

11. How long have you studied English?

àWhen_______________________________________________________ .

12. When did you begin to do research on lung cancer?

àHow long________________________________________________________.

3. You/ ever/ been/ Mexico?

4. Quynh/ not/ meet/ kids/ since Lunar New Year.

5. You/ repair/ door/ yet?

6. you / answer / the question

7. Your sister / lock / the door

8. They / learn / English.

9. Vu/ live / in Japan / for 4 years.

10. Her uncle / drink / too much wine.

11. We / go / to / Thailand.

12. My mother / cook / dinner / for my family.

13. She / meet / her family.

14. Dat / play / football / for 5 years.

15. They / watch / this movie.

Bài 2: Đọc và viết lại câu với từ just, yet and already

1. John goes out. Five mintues later, the phone rings and the caller says ‘Can I speak to John”

You say: I’m afraid … (go out).

2. You are eating in a restaurant. The waiter thinks you have finished and starts to take your plate away.

You say: Wait a minute! … (not/finish)

3. You are going to a hotel tonight. You phone to seserve a table. Later your friend says, ‘Shall I phone to reserve a table’.

You say: No, … (do/it).

4. You know that a friend of yours is looking for a place to live. Perhaps he has been successful.

Ask her. You say: … ? (find).

5. You are still thinking about where to go for your holiday. A friend asks: “Where are you going fot your holiday?”

You say: … (not/decide).

6. Tom went to the bank, but a few mintues ago she returned.Somebody asks, “Is Tom still at the bank? ‘

You say: No, … (come back).

Bài 3:  Điền “for” hoặc “since” vào chỗ trống dưới đây

1. She has used the laptop _____ three hours _____ 9 o’clock.
2. How many times have you read the book _____ you bought it?
3. Thao hasn’t eaten meat _____ Thursday.
4. We’ve known each other ______ ages.
5. My friend has owned the fashion shop________5 year.
6. It’s three years ____ Quan started learning English.
7. Lan and Qung have been married ______________a year.
8. India has been independent ____ 1947.
9. He has driven a car ______ his birthday.
10. I have learnt English _______________ I was 6.

04.08.2023 BTVN

Bài tập 1: Điền “since” hoặc “for” vào chỗ trống thích hợp

1. We have been friends_______ we first met in college. 

2. Our son have studied_______ hours. 

3. She has worked for that company_______ nearly a decade. 

4. They have lived in that apartment_______ 2016.  

5. We have waited for them_______ 6pm.    

6. _______ we started dating, she has always made me happy.  

7. I have washed the dishes_______ the beginning of this week. 

8. Our neighbors have sung_______ noon.  

9. _______ last Friday, he has been absent_______ 3 days. 

10. Richard and I haven’t written letters to each other_______ months.  

Bài tập 2: Hoàn thành câu với ‘just’, ‘yet’ and ‘already’.

Lưu ý: Một số câu có thể có nhiều hơn 1 đáp án.

1. Look! We have_______ found a cat in the garden.

2. No, thanks! I have_______ eaten. 

3. An accident has_______ happened. That’s why we heard the sound minutes ago.

4. Oh, no! It’s 6pm, but I haven’t completed my task_______.  

5. Don’t worry! I have_______ done that for you.   

6. I’m so hungry. I haven’t had lunch_______.  

7. I have_______ washed the dishes. You don’t have to do it anymore. 

8. Oh, you don’t have to call her anymore. I have_______ done that.  

9. I have_______ run here. I’m very tired now. 

10. I think she has_______ cried. Her eyes are red.  

Bài tập 3: Chia động từ trong ngoặc ở thì Hiện tại hoàn thành

1. They____________ (live) here since 1998.

2. I____________ (not see) her since 1998.

3. We____________ (visit) this place many times.

4. My family and I______ never______ (watch) this movie. 

5. This is the first time I____________ (eat) this dish. 

6. My best friend______ just______ (move) to another city. 

7. This is the best book we______ ever______ (read).

8. They____________ (not talk) to each other for a week. 

9. My mom____________ (have) dinner yet. 

10. ______ you ever______ (feed) a tiger?

11. That family____________ (buy) a new house.

12. We____________ (call) 15 customers this morning. 

13. My father____________ (not go) back to his home town since he moved here. 

14. That employee____________ (write) any reports this week. 

15. Sarah____________ (win) that competition many times.   

16. She____________ (lose) her wallet. 

17. Lily and Kim are the funniest people I______ ever______ (talk) to. 

18. This month, we____________ (not exercise) so far. 

19. We____________ (not travel) since our wedding. 

20. Her kid____________ (broke) the TV, so they can’t watch their favorite show now. 

Bài tập 4: Lựa chọn phương án đúng. 

1. Have you ever____________ to Hội An?

A. be           B. go           C. travel               D. been

2. My younger sister____________ a new room.

A. have rented      B. has rent            C. has rented        D. rented

3. This is the sweetest ice-cream I____________.

A. have ever make B. have ever made C. haven’t made D. have never made

4. She has lived there____________.

A. for long time B. for 3 months ago C. since 3 months ago     D. for a long time

5. I____________ this dish before. 

A. haven’t tried    B. have ever tried           C. have never tried         D. A & C

6. Sarah and I____________ our daughter. 

A. hasn’t picked up B. haven’t picked     C. not have picked up   D. haven’t picked up

7. My brothers____________ back home since their graduation. 

A. haven’t came   B. haven’t come    C. hasn’t come D. have came

8. We____________ each other for many years. 

A. have known   B. have know    C. has known D. haven’t known

9. They have been friends____________ their graduation. 

A. sine   B. from    C. since     D. to

10. The new students____________ anyone in our class.  

A. hasn’t talked     B. have talked    C. haven’t talked    D. haven’t talk