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4 tháng 10 2018

1. AT : - dùng trước thời gian ngắn: giờ, phút giây ...

-dùng chỉ sự cố định ở một vị trí nào đó tương đối nhỏ, vì nếu diện tích nơi đó lớn hơn ta dùng "in".

2. ON : - dùng trước thời gian chỉ: ngày, thứ ngày (trong lịch ...)

-dùng chỉ vị trí đứng liền ngay ở trên

3. IN : -dùng trước thời gian dài: tháng, mùa, năm, ...

-dùng chỉ vị trí (địa điểm - không chuyển hướng)

4. FOR : dùng để đo khoảng thời gian

5.SINCE : dùng để đánh dấu thời gian

Mình chỉ biết nấy thôi !!! ok

4 tháng 10 2018

nhanh lên các bn

 
Giới từSử dụngVí dụ
in monthsin July; in September
yearin 1985; in 1999
seasonsin summer; in the summer of 69
part of the dayin the morning; in the afternoon; in the evening
durationin a minute; in two weeks
part of the dayat night
time of dayat 6 o'clock; at midnight
celebrationsat Christmas; at Easter
fixed phrasesat the same time
days of the weekon Sunday; on Friday
dateon the 25th of December*
special holidayson Good Friday; on Easter Sunday; on my birthday
a special part of a dayon the morning of September the 11th*
later than sth.after school
how far sth. happened (in the past)6 years ago
earlier than sth.before Christmas
time that separates two pointsbetween Monday and Friday
not later than a special timeby Thursday
through the whole of a period of timeduring the holidays
period of timefor three weeks
two points form a periodfrom Monday to Wednesday
from Monday till Wednesday
from Monday until Wednesday
time of the day23 minutes past 6 (6:23)
point of timesince Monday
no later than a special timetill tomorrow
until tomorrow
time of the day23 minutes to 6 (5:37)
not more than a special timeup to 6 hours a day
during a period of timewithin a day

Copy ko ghi rõ nguồn :D

I.       Complete the sentences with in, at, on, for, since, after, before, between, until, during, from...to.1.      The course begins ______ 2 January 2005 and ends sometime ______ April.2.      The children aren’t here ______ the moment, but they’ll be back ______ a few minutes.3.      ‘We’re having a party ______ New Year’s Eve. Can you come?’ ‘I’m afraid I can’t. I don’t like going out ______ night.’4.      ‘What do you usually do ______ weekends?’ ‘I usually go swimming ______ 8 a.m...
Đọc tiếp

I.       Complete the sentences with in, at, on, for, since, after, before, between, until, during, from...to.

1.      The course begins ______ 2 January 2005 and ends sometime ______ April.

2.      The children aren’t here ______ the moment, but they’ll be back ______ a few minutes.

3.      ‘We’re having a party ______ New Year’s Eve. Can you come?’ ‘I’m afraid I can’t. I don’t like going out ______ night.’

4.      ‘What do you usually do ______ weekends?’ ‘I usually go swimming ______ 8 a.m ______ 10 a.m.’

5.      Please wait ______ half past ten. She’ll definitely be back ______ half past ten.

6.      Sandra often goes to church ______ 5 o’clock ______ Sundays.

7.      Bill has worked in this company ______ ten years, ______ 1999.

8.      The office will be closed ______ Christmas and New Year. It will be open ______ 5 January.

9.      It’s rained ______ the night ______ two or three hours.

10.  I’m starting a job in sales ______ I finish college.

11.  The New Year is celebrated ______ midnight ______ January 1.

12.  I might not be at home ______ Tuesday morning but I’ll probably be there ______ the evening.

13.  Why are you never ______ time? You always keep everybody waiting.

14.  ‘We’re getting married ______ November 2009.’ ‘Really? ______ the beginning of the month or ______ the end?’

15.  In Britain people send each other cards ______ Christmas and many people go to the church ______ Christmas Day.

1
20 tháng 8 2021

Tham khảo

1, on - in

2, of

3, in - at

4, on - from ... to ...

5, until - before

6, at - on

7, for - since

8, between - on

9, at - for

10, after

11, at - on

12, on - in

13, on/in

14, on- at - at

15, at - on

10 tháng 6 2018

1.waiting

2.to hear

3.to go

4.finishing

10 tháng 6 2018

1.Waiting

2.To hear

3.To go

4.Finishing

After I left school, I decided to go at/on/to university. I studied at/by/on university for three years. I did a degree for/in/of marketing. It was very interesting. I learnt all about/on/over  sales and marketing. When I graduated for/from/on university, I needed to get a job. I wanted to work as/by/for a large international company. I applied for/on/with  lots of jobs, but it was difficult because I didn’t have any experience. In the end, I got a job as/at/for a marketing assistant. It was a...
Đọc tiếp

After I left school, I decided to go at/on/to university. I studied at/by/on university for three years. I did a degree for/in/of marketing. It was very interesting. I learnt all about/on/over  sales and marketing. When I graduated for/from/on university, I needed to get a job. I wanted to work as/by/for a large international company. I applied for/on/with  lots of jobs, but it was difficult because I didn’t have any experience. In the end, I got a job as/at/for a marketing assistant. It was a bit boring, but I was very good at/from/to my job. After a few years, I was offered a job as a marketing manager and was given an increase as/in/of salary.                                                                                                                                                         SOS

1
5 tháng 4 2022

to - at - in - about - from - for - for - as - at - in

10 tháng 7 2017

1. Mr.Quang (teach) has taught in this school since he (graduate) graduated from the university in 1989.

2 My brother (leave) left home 10 years ago. I (never meet) have never met him since then.

3. Where did you (spend) spend your summer holiday last year, Tam?

4. When we (be) were small, our family (live) lived in the countryside.

5. I (read) am reading an interesting book at the moment.

6. How long have you (know) known Mrs.Chi? - I (know) have known her for five years.

7. We (not see) haven't seen her since we (be) were on holiday in Ha Long Bay.

8. Phuong (not finish) hasn't finished her homework yet.

9. It's three years since I last (see) saw Nam.

10. Were you (be) go away? - Yes I (go) went to the country last Sunday.

11. I (not eat) haven't eaten anything for two days.

12. They (move) moved to Ho Chi Minh City in 1990 and (live) have lived there since then.

10 tháng 7 2017

1 Mr.Quang (teach)____has taught____ in this school since he (graduate)__graduated_____ from the university in 1989

2 My brother (leave)_left_____ home 10 years ago. I (never meet)____have never met____ him since then

3 Where did you (spend)__spend___ your summer holiday last year, Tam?

4 When we (be)__were__ small, our family (live)__lived___ in the countryside

5 I (read)__am reading___ an interesting book at the moment

6 How long have you (know) _known____ Mrs.Chi?- I (know)____have known__ here for five years

7 We (not see)__haven't seen______ her since we (be)_were____ on holiday in Ha Long bay

8 Phuong (not finish)_hasn't finished______ her homework yet

9 It's three years since I last (see)__saw____ Nam

10 Were You (be)______ away?- Yes I (go)__went____ to the country last Sunday

11 I (not eat)___haven't eaten__ anything for two days

12 They (move)_moved____ to Ho Chi Minh City in 1990 and (live)___have lived___ there since then

Choose the best answer to complete the following sentences. 1. Children get present ______ Christmas and ______ their birthday. (at ... at / on ... on / on ... at / at ... on) 2. If you are going to the post office, would you post a letter ______ me? (to / at / on / for) 3. The windows haven’t been cleaned ______ weeks. (ago / since / for / to) 4. We usually go to our home village at least once ______ the summer. (in / on / to / for) 5. He said that John ______ up his job. (has given...
Đọc tiếp
Choose the best answer to complete the following sentences. 1. Children get present ______ Christmas and ______ their birthday. (at ... at / on ... on / on ... at / at ... on) 2. If you are going to the post office, would you post a letter ______ me? (to / at / on / for) 3. The windows haven’t been cleaned ______ weeks. (ago / since / for / to) 4. We usually go to our home village at least once ______ the summer. (in / on / to / for) 5. He said that John ______ up his job. (has given / have given / had given / had to give) 6. When I saw Susan, she said she was taking her driving test ______. (today / the next day / tomorrow / the tomorrow) 7. My TV is broken. I wish it ______ soon. (would be repaired / is repaired/ was repaired / will be repaired) 8. I have lived with my parents. I wish I ______ an apartment. (will have / had / would / has) 9. Have you ever wished you ______ to ski when you were younger? (will learn / could learn / learn / can learn) 10. Sometimes he wishes he ______ a different career when he graduates. (can choose / choose / will choose / could choose) 11. Matthew said he was meeting a friend at the station later ______. (that day / yesterday / tomorrow / this today) 12. The astronauts have alrea dy been in orbit ______ two days. (since / for / till / to) 13. We have lunch from 12.00 ______ 1.00. Then we start again go on______ 5.30. (to ... at / from ... to / to ... to / to ... till) 14. She said that she ______ to learn to drive. (is going / go / goes /was going) 15. She asked me ______ I liked pop music. (if / that / what / when) 16. She said that she was going away for a few days and ______ phone me when she got back. (will / must / would / shall) 17. I’ve lived in this street ______. (in 1998 / for 1998 / since 1998 / tomorrow) 18. I want two seats for Romeo and Juliet ______ Friday night. (on / in / at / to) 19. Our train arrived in York ______ 6.00. (in / for / on / at) 20. There was an accident at the crossroads ______ midnight last night. (at / for / on / in) 21. She said she ______ come to the party on Friday. (won’t / doesn’t / can’t / couldn’t) 22. I’m going to swim ______ Monday with Tom. (at / on / for / of) 23. If my watch is broken, I ______ buy a new one because I always need one. (have to/ might / have / may) 24. I have got an awful headache. If I see a chemist’s, I ______ buy someaspirins. (must / might / may / should to) 25. I plan to travel around the world. If I don’t visit my father in Japan this year, I ______ go to the USA. (must / have / may / ought to) 26. If you want to get good grades, you ______ study hard. (must / ought / have / have) 27. Let’s wait ______ it stops raining. (until / for / to / since) 28. I have lived in this house ______. (ago six years / in six years / since six years / for six years) 29. Columbus discovered America ______ the 15th century. (in / since / for / on) 30. The course begins ______ 8 am ______ 5 pm. (from ... during / from ... since / from ... to / in ... to)
2
9 tháng 8 2018

Choose the best answer to complete the following sentences. 1. Children get present ______ Christmas and ______ their birthday. (at ... at / on ... on / on ... at / at ... on)

2. If you are going to the post office, would you post a letter ______ me? (to / at / on / for)

3. The windows haven’t been cleaned ______ weeks. (ago / since / for / to)

4. We usually go to our home village at least once ______ the summer. (in / on / to / for)

5. He said that John ______ up his job. (has given / have given / had given / had to give)

6. When I saw Susan, she said she was taking her driving test ______. (today / the next day / tomorrow / the tomorrow)

7. My TV is broken. I wish it ______ soon. (would be repaired / is repaired/ was repaired / will be repaired)

8. I have lived with my parents. I wish I ______ an apartment. (will have / had / would / has)

9. Have you ever wished you ______ to ski when you were younger? (will learn / could learn / learn / can learn)

10. Sometimes he wishes he ______ a different career when he graduates. (can choose / choose / will choose / could choose)

11. Matthew said he was meeting a friend at the station later ______. (that day / yesterday / tomorrow / this today)

12. The astronauts have alrea dy been in orbit ______ two days. (since / for / till / to)

13. We have lunch from 12.00 ______ 1.00. Then we start again go on______ 5.30. (to ... at / from ... to / to ... to / to ... till)

14. She said that she ______ to learn to drive. (is going / go / goes /was going)

15. She asked me ______ I liked pop music. (if / that / what / when)

9 tháng 8 2018

Choose the best answer to complete the following sentences. 1. Children get present ______ Christmas and ______ their birthday. (at ... at / on ... on / on ... at / at ... on)

2. If you are going to the post office, would you post a letter ______ me? (to / at / on / for)

3. The windows haven’t been cleaned ______ weeks. (ago / since / for / to)

4. We usually go to our home village at least once ______ the summer. (in / on / to / for)

5. He said that John ______ up his job. (has given / have given / had given / had to give)

6. When I saw Susan, she said she was taking her driving test ______. (today / the next day / tomorrow / the tomorrow)

7. My TV is broken. I wish it ______ soon. (would be repaired / is repaired/ was repaired / will be repaired)

8. I have lived with my parents. I wish I ______ an apartment. (will have / had / would / has)

9. Have you ever wished you ______ to ski when you were younger? (will learn / could learn / learn / can learn)

10. Sometimes he wishes he ______ a different career when he graduates. (can choose / choose / will choose / could choose)

11. Matthew said he was meeting a friend at the station later ______. (that day / yesterday / tomorrow / this today)

12. The astronauts have alrea dy been in orbit ______ two days. (since / for / till / to)

13. We have lunch from 12.00 ______ 1.00. Then we start again go on______ 5.30. (to ... at / from ... to / to ... to / to ... till)

14. She said that she ______ to learn to drive. (is going / go / goes /was going)

15. She asked me ______ I liked pop music. (if / that / what / when)

18 tháng 9 2018

a, 

BƯỚC 1 : tách bột sắt ra khỏi hỗn hợp bằng cách dùng nam châm để hút . Còn lại là muối ăn và nhôm vì chúng không bị nam châm hút .

BƯỚC 2 : tách bột nhôm ra khỏi hỗn hợp muối và nhôm bằng cách quấy đều chúng vào nước rồi đỏ nước từ từ qua phều có giấy lọc . Ta được phần còn lại là nước muối .

BƯỚC 3 : tách muối ra khỏi hỗn hợp nước muối bằng cách đun sôi nước ở nhiệt độ 100 độ C  , nước sẽ bay hơi hết , còn lại là muối 

b, 

Bước 1: Hòa tan hỗn hợp đường & bột gạo vào nước, đem lọc được bột gạo, để khô (gạo không tan trong nước)
Bước 2: Chưng cất dung dịch nước đường, sau đó làm lạnh hơi nước, rồi tách đường với nước ra. 

=> từ đó xác định đc các chất

18 tháng 9 2018

a ) Hỗn hợp cát, muối ăn và cát.

Đầu tiên, dùng phương phát lọc đề tách cát ra khỏi hỗn hợp cát và nước muối

Sau đó, dùng phương pháp chưng cất để tách muối và nước ra khỏi hỗn hợp nước muối.

b ) Hỗn hợp gồm đường và bột gạo 

Đầu tiên, trộn thêm nước vào hỗn hợp đường và bột gạo. Vì bột gạo không tan trong nước, dùng phương pháp lọc để tách bột gạo ra khỏi hỗn hợp,

Sau đó, dùng phương pháp bay hơi để lấy đường ra khỏi hỗn hợp nước đường.

22 tháng 7 2021

to

22 tháng 7 2021

to

Complete the sentences with: in, at, on, for, since, after, before, between, until, during, from...to1. The course begins ______ 2 May 2005 and ends sometime ______ June.2. The children aren’t here ____ the moment, but they’ll be back ______ a few minutes.3. “We’re having a party ______ New Year’s Eve. Can you come?” – “I’m afraid I can’t. I don’t like going out _____ night.”4. In Britain people send each other cards ________ Christmas and many people go to the church _____ Christmas Day.5. Why...
Đọc tiếp

Complete the sentences with: in, at, on, for, since, after, before, between, until, during, from...to

1. The course begins ______ 2 May 2005 and ends sometime ______ June.

2. The children aren’t here ____ the moment, but they’ll be back ______ a few minutes.

3. “We’re having a party ______ New Year’s Eve. Can you come?” – “I’m afraid I can’t. I don’t like going out _____ night.”

4. In Britain people send each other cards ________ Christmas and many people go to the church _____ Christmas Day.

5. Why are you never ____ time? You always keep everybody waiting.

6. Sam often goes to the church _____ 5 o’clock ________ Sundays.

7. The office will be closed_______ Christmas and New Year. It will be open _______ 5 January.

8. Please wait ____ half past ten. She’ll definitely be back _____ half past ten.

9. It’s rained _____ the night ______ two or three hours.

10. I’m starting a job in sales ______I finish college.

11. Bill has worked in this company ______ ten years, ______ 1999.

12. I might not be at home ______ Monday morning but I’ll probably be there _______ the evening.

13. “What do you usually do ________ the weekend?” –“I usually go swimming _____ 8a.m ____ 10 a.m.”

14. The New Year is celebrated _____ midnight ____ January 1.

 

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