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TT
2
22 tháng 10 2021
Q25 - I ........ from her lately
haven't heard
didn't hear
Q26 - I just ........ the time to go to the cinema recently
didn't have
haven't had
Q27 - I ........ just Meg and Brian at the party
have seen
saw
Q28 - I ........ busy for the past fortnight
was
have been
Q29 - She ......... away for the last two weeks
has been
was
Q30 - ......... to the concert on Friday?
Did you go
Have you been
Q31 - This is the first time I ........ here
have been
was
Q32 - I ....... them since my schooldays
have known
knew
23 tháng 2 2021
1)see/will tell
2)met/would go
3.sleep/will improve
4.want/ will ring up
5.need/will help
6.have/ will be
7.would understand/spoke
8.see/will show
9. will finish / can
10. gave / wouldn't be able
11. would make / took
12. won't need / doesn't rain
13. thought /would form
14. caught /would arrive
15. will find / looks
16. thought / would say
17. promised / would forgive
18. want / will come
19. could / would come
20. wait /will bring
21. would lose / stopped
22. will be / have
23. won't phone / was
24. loved /wouldn't fight
25. were / would try
26. does / will punish
27. ask /will marry
28. would get / walked
29. drinks /will feel
30. would be /were
LT
14 tháng 9 2020
1. Make one sentence from two , using the word in brackets
1, she was very kind I didn't like her ( though)
-> Thought she was very kind, I didn't like her.
2. She went on working . She was it( even though)
-> Even though she went on working, she was it.
3. we drove slowly .It was snowing ( because)
-> We drove slowly because it was snowing.
4. Larry is older than Meg but she is taller than he is ( although)
-> Although Larry is older than Meg, she is taller than he is.
MN
14 tháng 9 2020
1. I didn't like her though she was very kind
2. Even though she was it, she went on working
3. We drove slowly because it was snowing
4. Larry is older than Meg although she is taller than he is
TD
2 tháng 7 2018
Make sentences:
1,my father/just/come/home.
=> My father has just come home.
2.we/finish/already/project/Science.
=> We have already finished the project of Science.
3,yet/the students/enter/the gymnasium
=> The students have not entered the gymnasium yet
4,find/I/new idea/just/for/my composition
=> I have just found new idea for my composition
5,meg/breakfast/already/finish/her
=> Meg has already finished her breakfast
6,our/yet/teacher/into/classroom/come
=> Our teacher has not come into classroom yet
cảm ơn ak!
AT
30 tháng 10 2017
Reported Speech
1. "Don't go there alone, Julia'' Meg told here
=> Meg told Julia not to go there alone.
2. '' You'd better take a short holiday, June''. Said Pauline
=> Pauline advised June to take a short holiday.
3. ''Don't argue with me'' the teacher said to the boy
=> The teacher told the boy not to argue with her.
4. ''Do you want to go out for dinner with me, Kate?'' He said
=> He asked Kate if she wanted to go out for dinner with him.
5. ''I'll follow you wherever you go'' He said to me
=> He told me that he would follow me wherever I go.
6. ''I'll kill your son if you call the police.'' The kidnapper told them
=> The kidnapper told them that he would kill their son if they call the police.
7. ''If I were you, I wouldn't accept his invitation '' Kim said to Lyrn
=> Kim advised Lyrn no to accept his invitation.
8. '' Remember to put on your dirty clothes in this basket, boy'' Said the mother
=> The mother told the boy to put his dirty clothes in that basket.
9. '' Follow that car'' He said to me
=> He told me to follow that car.
30 tháng 10 2017
Reported Speech
1. "Don't go there alone, Julia'' Meg told here
-> Meg told Julia not to go there alone.
2. '' You'd better take a short holiday, June''. Said Pauline
-> Pauline advised June to take a short holiday.
3. ''Don't argue with me'' the teacher said to the boy
-> The teacher told the boy not to argue with him.
4. ''Do you want to go out for dinner with me, Kate?'' He said
-> He told Kate if he wanted to go out for dinner with him.
5. ''I'll follow you wherever you go'' He said to me
-> He said that he would follow me wherever I go.
6. ''I'll kill your son if you call the police.'' The kidnapper told them
-> The kidnapper threatened he would kill their son if they called the police.
7. ''If I were you, I wouldn't accept his invitation '' Kim said to Lyrn
-> Kim advised Lyrn not to accept his invitation.
8. '' Remember to put on your dirty clothes in this basket, boy'' Said the mother
-> The mother told the boy to remember to put on his dirty clothes in that basket.
9. '' Follow that car'' He said to me
-> He told me to follow that car.
3 tháng 6 2021
Giải thích các bước giải:
a) Xét tam giác ABC và AMC có chung chiều cao hạ từ đỉnh C mà M là trung điểm AB nên AB = 2 x AM => S_ABC = 2 x S_AMC
Xét tam giác AMC với AMD có chung đáy AM, chiều cao hạ từ đỉnh D đáy AM = chiều cao từ đỉnh C đáy AM => S_AMC = S_AMD.
b) Nối AN và EN
Xét các tam giác AMC và ANC đều = 1/4 diện tích hình bình hành = 15 cm2. Mặt khác 2 tam giác này có chung đáy AC => chiều cao hạ từ đỉnh M xuống đáy AC = chiều cao từ đỉnh N đáy AC.
Xét tam giác ENC và EMC chung đáy EC, chiều cao bằng nhau => S_ENC = S_EMC. (1)
Xét tam giác EDN và ENC chung đỉnh E, đáy DN = NC => S_EDN = S_ENC (2)
Xét S tam giác AMD = S_AMC (phần a đã chứng minh) có chung AME => S_AED = S_EMC (3)
Từ (1) ; (2) và (3) => S_EMC = S_ENC = S_EDN = S_AED.
Ta có S_MBC = 15 cm2 => S_ACD = 15 x 2 = 3 (cm2)
Mà S_ACD = S_ENC + S_EDN + S_AED và 3 tam giác này bằng nhau nên :
S_ENC = 30 : 3 = 10 (cm2) mà S_ENC = S_MEC.
Vậy diện tích MEC = 10 cm2.
c) Từ S_MEC = 10 cm2 => S_MEA = 15 - 10 = 5 (cm2)
Xét có chung chiều cao đỉnh M mà S_MEA/S_MCA = 5/15 = 1/3 =>đáy AE = 1/3 AC
(với cách chứng minh tương tự ta có S_NGC = 5 cm2 và GC = 1/3 AC)
Vậy EG = AC - 1/3 AC - 1/3 AC = 1/3AC
Vậy AE = EG = GC
c 5/21
d 8/9
\(c,\)\(\frac{2}{3}-\frac{3}{7}\)
\(=\frac{14}{21}-\frac{9}{21}\)
\(=\frac{5}{21}\)
\(d,\)\(\frac{4}{9}\div2\)
\(=\frac{4}{9}\times\frac{1}{2}\)
\(=\frac{4}{18}=\frac{2}{9}\)