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7 tháng 7 2018

ai trả lời đúng tớ cho 1 like

7 tháng 7 2018

kiểu toán gì vậy lần đầu tiên tui thấy đó

3 tháng 11 2017

1) She thinks making models is interesting

2) My father does exercise every morning

3) He says he will travel around the world when he is older.

4) My uncle can make wonderful pieces of art from wood

5) Nga is interested in learning History

6 tháng 11 2017

cảm ơn nhé 

10 tháng 7 2017

Các bạn học sinh KHÔNG ĐƯỢC đăng các câu hỏi không liên quan đến Toán, hoặc các bài toán linh tinh gây nhiễu diễn đàn. Online Math có thể áp dụng các biện pháp như trừ điểm, thậm chí khóa vĩnh viễn tài khoản của bạn nếu vi phạm nội quy nhiều lần.

Chuyên mục Giúp tôi giải toán dành cho những bạn gặp bài toán khó hoặc có bài toán hay muốn chia sẻ. Bởi vậy các bạn học sinh chú ý không nên gửi bài linh tinh, không được có các hành vi nhằm gian lận điểm hỏi đáp như tạo câu hỏi và tự trả lời rồi chọn đúng.

27 tháng 7 2016

1. Lan còn rất trẻ. Cô không thể là thành viên câu lạc bộ của chúng tôi.

2. Giáo viên của tôi không có nhiều tiền. Anh không thể mua căn nhà đó.

3.It là không ấm áp. Các em không thể đi bơi.

6. Những quả táo không chín. Chúng tôi không thể ăn chúng.

7. Anh trai của bạn là cũ. Ông có thể lái một chiếc xe hơi.

8. nông dân này là rất thông minh. Ông có thể làm cho mọi việc từ tre

9. Nó là rất nhẹ. Chúng tôi không thể nhìn thấy cái nhìn rõ ràng.

10. Đứa trẻ đó là không cao. Anh ta không thể đạt được bookshelft

Dịch thế này hả

27 tháng 7 2016

Lan isn't  old enough to....

My teacher didn't have moneyenough  to...

3.It wasn't warm enough the children go swimming.

6. These apple aren't ripe enough to we can eat them.

7. Your brother isold enough to can drive a car.

8. This farmer is clever enough to can make things from bamboo

9. It isn't enough drank to we can see the stare clearly.

10. That child isn't tall  enough  to reach....

cấu trúc enough:

Cấu trúc chung
S + be + Adjective + enough for somebody to do something
S + be + Adjective + enough that somebody can/could (not) to do something
S + Verb + Adverb + enough for somebody to do something
S + Verb + Adverb + enough that somebody can not / could not do something
S + Verb + Enough + Noun to do something.

chúc bạn học tốt

1. “ Why don’t you put better lock on the door, Barbara”? said John=> John suggested……………………………………………………………………………………..2. Although his both legs were broken in the crash, he managed to get out of the car before it exploded.=> Despite his…………………………………………………………………………………………..3. I haven’t eaten this kind of food before.=> This is the...
Đọc tiếp

1. “ Why don’t you put better lock on the door, Barbara”? said John

=> John suggested……………………………………………………………………………………..

2. Although his both legs were broken in the crash, he managed to get out of the car before it exploded.

=> Despite his…………………………………………………………………………………………..

3. I haven’t eaten this kind of food before.

=> This is the first………………………………………………………………………………..

4. The architect has drawn plans for an extension to the house.

=> Plans…………………………………………………………………………………………………

5. It isn’t necessary for you to finish by Saturday

=> You……………………………………………………………………………………………………

6. “ How many survivors are there?”, asked the journalist.

=> The journalist wanted to know………………………………………………………………

7. It was such rotten meat that it had to be thrown away.

=> The meat was………………………………………………………..

8. It is essential that Professor Van Helsing is met at the airport.

=> Professor Van Helsing……………………………………………………………………..

9. You can’t visit the USA unless you have a visa.

=> If you………………………………………………………..

10. “ Can I borrow your typewriter, Janet”? asked Peter.

=> Peter asked if……………………………………………………………..

11. She started working as a secretary five years ago.

=> She has……………………………………………………………………

12. She knows a lot more about it than I do.

=> I don’t know…………………………………………………………………….

13. My French friend finds driving on the left difficult.

=> My French friend isn’t………………………………………………………………….

14. They think the owner of the house is abroad.

=> The owner………………………………………………………………………….

15. We didn’t go on holiday because we did not have enough money.

=> If we…………………………………………………………………………………….

16. The children couldn’t go swimming because the sea was rough.

=> The sea was too……………………………………………………………………….

17. The mechanic serviced my car last week.

=> I………………………………………………………………………………..

18. I’m always nervous when I travel by air.

=> Traveling…………………………………………………………………………………………..

19. He couldn’t afford to buy the car.

=> The car……………………………………………………………………………………………..

20. “Why don’t you put your luggage under the seat?” he asked.

=> He suggested………………………………..

21. Although he had a good salary, he was unhappy in his job.

=> In spite of………………………………………………………………………………..

22. I’m sorry I missed your birthday party.

=> I wish…………………….

23. They haven’t cleaned the streets this week.

=> The streets…………….

24. Apples are usually cheaper than oranges.

=> Apple are not……………….

25. I advice you to put your money in the bank.

=> You’d……………………

26. That restaurant is so dirty that no one wants to eat there.

=> It is such…………………………………..

27. I’ll pick the children up if you like.

=> Would you……………………………….

28. He objected to the fact that his secretary came to work late.

=> He was annoyed………………………….

29. Tom is the most industrious pupil.

=> No other pupil……………..

30. She isn’t accustomed to life in London

=> She’s not used to…………………..

31. “Don’t forget to phone the office,” she told him.

=> She reminded……………….

32. I’m afraid I haven’t got time to listen to you.

=> I wish…………………….

33. The police has just released John.

=> John…………………………………………………………………………………………….

34. I couldn’t hear them because they were speaking too softly.

=> They were speaking………

35. We spent 5 hours getting to London.

=> It took……..

36. I get to work in 20 minutes.

=> It ………………

37. It is necessary that this work be finished by Monday.

=> This work……..

38. It’s a pity I didn’t take my doctor’s advice.

=> I wish……………

39. The bread is so tale we can’t eat it.

=> The bread isn’t……….

40. Who does this bag belong to?

=> Whose……..

41. My boyfriend is very short-tempered.

=> My boyfriend loses……….

42. You can use it as long as you like, and it won’t wear out.

=> No matter…….. ………………………………………………………………………………..

43. If the work is finished by lunchtime you can go home.

=> Get………………………………………………………………………………………..

44. How have you been getting on with your enquiries?

=> How much…………

45. I gave Ted the massage, but he already knew about it.

=> I needn’t………

46. The trains couldn’t run because of the snow.

=> The snow………………………………………………………………

47. I didn’t arrived in time to see him.

=> I wasn’t early………………………………………………………….

48. I’m sorry I was rude to you yesterday.

=> I apologize……………………………………………………………..

49. She didn’t hurry, so she missed the train.

=> If……………………………………………………………………….

50. Barbara is the best tennis-player in the club.

=> No one…………………………………………………………………

51. I haven’t seen that man here before.

=> It’s……………………………………………………………………..

52. The furniture was so expensive that I didn’t buy it.

=> The furniture was too………………………………………………….

53. The robbers made the bank manager hand over on the money.

=> The bank manager……………………………………………………..

54. Tom learned to drive when he was nineteen.

=> Tom has………………………………………………………………..

55. She had never been so unhappy before.

=> She was unhappier……………………………………………………..

56. It was so late that nothing could be done.

=> It was too………………………………………………………………

57. He left school and then joined the army.

=> After …………………………………………………………………

58. The leak was repaired by the plumber this morning.

=> The plumber …………………………………………………………..

59.This flower is very beautiful!

=> How …………………………………………………………………!

60. Somebody stole his watch yesterday.

=> His watch ………………………………………………………………

61. The last time she had a swim was five years ago.

=> She hasn’t ………………………………………………………………

62. I asked the hotel porter to wake me at 8 o’clock the following morning.

=> “Please…………………………………………………………………

63. They’ll have to change the date of the meeting again.

The date……………………………………………………………….

64. The garage is going to repair the car for us next week.

We are going ………………………………………………………….

65. The bus take s longer than the train.

The train……………………………………………………………….

66. John has not had his hair cut for over six months.

It is……………………………………………………………………..

67. Maria says she’d like to have been put in a higher class.

Maria wishes…………………………………………………………..

68. Would you like me to finish the work tonight?

I’ll………………………………………………………………………

69. You may get hungry on the train, so take some sandwiches.

In……………………………………………………………………….

70. My husband didn’t leave the car keys, so I couldn’t pick him up at the station.

If my husband…………………………………………………………..

71. “I don’t think John will come”, said Bill

Bill doubted……………………………………………………………..

72. The postman was bitten by our dog.

Our dog………………………………………………………………….

73. We couldn’t drive because of the fog.

The fog prevented……………………………………………………….

74. Although his leg was broken he managed to get out of the car.

In spite…………………………………………………………………..

75. The cake was so hard so I couldn’t cat it.

It was…………………………………………………………………….

76. We didn’t go because it rained.

If it hadn’t………………………………………………………………..

77. I can’t cook as well as my mother does.

My mother…………………………………………………………………

78. I don’t suppose you have change for a pound, do you?

Do you happen……………………………………………………………

79. He failed to win the race.

He didn’t………………………………………………………………….

80. Mary rang hours and hour ago.

It’s hours………………………………………………………………….

81. I’m sorry that I didn’t finish my homework last night.

I wish……………………………………………………………………..

82. She asked Michael how she liked her new dress.

“How……………………………………………………………………..

83. A train leaves at 8 o’clock every morning.

There is…………………………………………………………………..

84. Nobody can deny that she has a beautiful voice.

It…………………………………………………………………………

85. I would like you t help me to put the chairs away.

Do you mind…………………………………………………………….

86. The child will die if nobody sends for a doctor.

Unless……………………………………………………………………

87. He would prefer you to pay him immediately.

He’d rather………………………………………………………………

88. The water was so cold that the children couldn’t swim in it.

The water was not………………………………………………………………………….

89. Somebody repaired her car yesterday.

She………………………………………………………………………………………………

90. You must see the manager tomorrow morning.

You’ve………………………………………………………………………………………….

91. There was never any answers when we rang.

=> Every……………………………………………………………………………………………

92. That’s an insulting name to use for him.

=> Don’t call……………………………………………………………………………………..

93. John asked if it was the blue one or the green she wanted.

=> Which…………………………………………………………………………………………..

94. She liked Paris very little, and Rome less.

=> She thought Rome………………………………………………………………………….

95. I can meet you if you arrive before eleven.

=> So………………………………………………………………………………………………..

96. They will catch all the prisoners again by tonight.

=> All the prisoners…………………………………………………………………………….

97. I’ve warned you not go to near that dog.

=> I’ve warned you about……………………………………………………………………

98. No, please don’t tell him.

=> I’d rather……………………………………………………………………………………….

9
16 tháng 3 2019

1. “ Why don’t you put better lock on the door, Barbara”? said John

=> John suggested Barbara to put better lock on the door

2. Although his both legs were broken in the crash, he managed to get out of the car before it exploded.

=> Despite his both broken legs, he managed to get out of the car before it exploded

3. I haven’t eaten this kind of food before.

=> This is the first time I've eaten this kind of food

4. The architect has drawn plans for an extension to the house.

=> Plans for an extension to the house has been drawn by the architect

5. It isn’t necessary for you to finish by Saturday

=> You needn't finish by Saturday

6. “ How many survivors are there?”, asked the journalist.

=> The journalist wanted to know how many survivors there were

7. It was such rotten meat that it had to be thrown away.

=> The meat was so rotten that it had to be thrown away

8. It is essential that Professor Van Helsing is met at the airport.

=> Professor Van Helsing must be met at the airport

9. You can’t visit the USA unless you have a visa.

=> If you have a visa, you can visit the USA

10. “ Can I borrow your typewriter, Janet”? asked Peter.

=> Peter asked if he could borrow Janet's typewrite

11. She started working as a secretary five years ago.

=> She has been working as a secretary for five years

12. She knows a lot more about it than I do.

=> I don’t know as much about it as she does

13. My French friend finds driving on the left difficult.

=> My French friend isn’t used to driving on the left

14. They think the owner of the house is abroad.

=> The owner of the house is thought to be abroad

15. We didn’t go on holiday because we did not have enough money.

=> If we had had enough money, we would have gone on holiday

16. The children couldn’t go swimming because the sea was rough.

=> The sea was too rough for the children to go swimming

17. The mechanic serviced my car last week.

=> I had the mechanic service my car last week

18. I’m always nervous when I travel by air.

=> Traveling by air always makes me nervous

19. He couldn’t afford to buy the car.

=> The car was too expensive for him to buy

20. “Why don’t you put your luggage under the seat?” he asked.

=> He suggested me to put my luggage under the seat

Mk chỉ  có thể giải 20 câu th =(((

#NPT

câu trả lời của bạn ấy đ rùi chúc b học tốt nhé

18 tháng 9 2015

Gọi số gói mà ông vịt Scrooge mua của McVees và Jays là \(x,y.\) Điều kiện: \(x,y\)  là số tự nhiên. Nếu số người ở hội nghị là \(N\) thì ta có phương trình \(6x+5y=N.\)

a) Nếu ông vịt phải mua cho 58 người, ông chỉ cần mua của McVees 3 gói và của Jays là 8 gói. Khi đó \(6x+5y=6\times3+5\times8=58.\) 

b)  Bài toán yêu cầu chúng ta xác định số nguyên \(N\) lớn nhất mà ông vịt keo kiệt bắt buộc phải mua thừa ra một số gói Bim bim, nếu muốn đảm bảo mỗi người trong hội nghị phải được ăn đúng 1 gói Bim bim.   

Đầu tiên ta nhận xét rằng nếu số người \(N\) chia hết cho 5 thì ông Vịt của chúng ta không cần phải phí phạm tiền của mình, vì khi đó ông ấy chỉ việc mua của bạn Jays \(\frac{N}{5}\) gói, còn không mua của McVees. 

Khi  \(N=20\) ông Vịt cần mua \(\frac{N}{5}=4\) gói của Jays, không mua của McVees. Nếu \(N=21\)  ông chỉ cần giảm số gói mua của Jays đi 1 và tăng số gói của mua của McVees lên 1, tức là mua của McVees 1 gói và của Jays 4 gói. Khi đó số bim bim mua là \(6\times1+5\times3=21=N.\) Tương tự cho \(N=22,23,24.\) VÌ khi \(N\ge20,N\vdots5\) thì số gói mua của Jays là \(\frac{N}{5}\ge4\to\) bằng cách trên, khi \(N\) tăng thêm 1 thì số gói mua của Jays giảm đi 1 và số gói mua của McVees tăng thêm 1. \(N\) sẽ tăng cho đến khi \(N+5\) ta lại gặp một số chia hết cho 5 và có thể lặp lại điều trên. 

Cuối cùng khi \(N=19\) thì phương trình \(6x+5y=19\) không có nghiệm tự nhiên, thực vậy \(6x\le19\to x\le3\to x=0,1,2,3\). Tuy nhiên \(19\) chia cho \(5\) dư \(4\) nên cả \(4\) trường hợp này đều không thoả mãn. (hoặc thử trực tiếp).

Vậy số \(N\) lớn nhất là \(19.\) Khi \(N>19\) thì ông Vịt sẽ tiết kiệm được tiền của mình khi mà không cần phải mua thừa ra số gói Bim-bim.