cách dùng in,on,at,for,since,after,from-to,bettwen
tách riêng từng loại nhé
ai nhanh mk tick
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Giới từ | Sử dụng | Ví dụ |
---|---|---|
in | in months | in July; in September |
year | in 1985; in 1999 | |
seasons | in summer; in the summer of 69 | |
part of the day | in the morning; in the afternoon; in the evening | |
duration | in a minute; in two weeks | |
at | part of the day | at night |
time of day | at 6 o'clock; at midnight | |
celebrations | at Christmas; at Easter | |
fixed phrases | at the same time | |
on | days of the week | on Sunday; on Friday |
date | on the 25th of December* | |
special holidays | on Good Friday; on Easter Sunday; on my birthday | |
a special part of a day | on the morning of September the 11th* | |
after | later than sth. | after school |
ago | how far sth. happened (in the past) | 6 years ago |
before | earlier than sth. | before Christmas |
between | time that separates two points | between Monday and Friday |
by | not later than a special time | by Thursday |
during | through the whole of a period of time | during the holidays |
for | period of time | for three weeks |
from ... to from... till/until | two points form a period | from Monday to Wednesday from Monday till Wednesday from Monday until Wednesday |
past | time of the day | 23 minutes past 6 (6:23) |
since | point of time | since Monday |
till/until | no later than a special time | till tomorrow until tomorrow |
to | time of the day | 23 minutes to 6 (5:37) |
up to | not more than a special time | up to 6 hours a day |
within | during a period of time | within a day |
Copy ko ghi rõ nguồn :D
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
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.
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 / 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)
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)
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
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.
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 !!!
nhanh lên các bn