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Tự vẽ hình nha.
c. Ta có: \(\left\{{}\begin{matrix}\widehat{BFA}=\widehat{FIA}+\widehat{IAF}\\\widehat{FAB}=\widehat{MAB}+\widehat{FAM}\end{matrix}\right.\)
Mà \(\widehat{FIA}=\widehat{MAB}\) (Cùng phụ \(\widehat{ABI}\) )
Và \(\widehat{IAF}=\widehat{FAM}\) (gt)
\(\Rightarrow\widehat{BFA}=\widehat{FAB}\) Hay \(\Delta ABF\) cân tại B.
Mà \(BE\perp AF\) ( \(\widehat{AEB}=90^0\) )
Nên \(AE=EF\) (1)
Ta lại có: \(\left\{{}\begin{matrix}HK\perp AE\\\widehat{HAE}=\widehat{KAE}\end{matrix}\right.\) Suy ra \(\Delta AHK\) là tg cân.
\(\Rightarrow HE=EK\) (2)
Từ (1)(2)suy ra \(AHFK\) là hình bình hành.
\(\Rightarrow FK//IA\)
Hay \(AIFK\:\) là hình thang. Để AIFK nội tiếp được đường tròn thì \(\widehat{BIA}=\widehat{IAM}\) \(\Rightarrow\widehat{BIA}=\widehat{ABI}\) \(\Rightarrow\widehat{MBA}=\widehat{MAB}=45^0\)
Hay M là điểm chính giữa cung AB./.
Có gì không hiểu cứ hỏi mình nha. !
Exercise 4 :
2, When I slow, I will late for the flight.
Tranformation
1/ The discussion on this topic started 10 minutes ago
-> We have a discussion on this topic 10 minutes ago
2/ Collecting stamps from foreign countries is Nam's interests
-> Nam is interested in collecting stamps from foreign countries
3/ " Don't forget to do your assignments , Jack" said Jack's mother
-> Jack's mother reminded him to do his assignments
4/ Does everyone hate her?
-> Nobody likes her,do they?
5/ Because of their good performance, they won the match
-> Because they had performed well, they won the match.
6/ He said that, " I can't do these exercises in thirsty minutes "
-> He said that those exercises couldn't be done in thirty minutes
7/I think that no city in the world is more beautiful than Paris
-> I think Paris is the most beautiful city in the world
8/ A generous man gave the charity considerable money
-> The man who gave the charity considerable money is generous
9/ It took Mary two hours to travel to the countryside last week
-> Mary spent two hours travelling to the countryside last week
10/ Hoang is the tallest student in my class
-> No one is as tall as hoang in my class
11/ They said, " Let's take the entrance examination carefully "
-> They suggested that the entrance examination should be taken carefully
1 thank you for your help!
-It was kind of you to help me
2 ''don't open the door please'' said Mary
-Mary told me not to open the door
3 staying at home would be better than going out to night
-I'd rather stay at home than go out to night
4 the last time it rained here was a fortnight ago
-It hasn't rained here for a fortnight
5 he never has enough money
-He's always lack of money
6 they said that Mr Tuan is a good teacher.
-Mr Tuan was said to be a good teacher
7 my French friend finds driving on the left difficult.
-My French friend isn't used to driving on the left
8 I think that no city in the world is more beautiful than Paris
-I think Paris is the most beautiful city in the world
9 the fright to Moscow lasted three and half hours
It takes three and half hours to fly to Moscow
10 rich as he was,he never helped the poor
-No matter how rich he was, he never helped the poor.
Choose one sentence that best rewrites the sentence given:
1. They understand more than we do
A. We don't understand as much as they do
B. We don't understand anything at all
C. They understand everything inside out
D They are very intelligent
2. It is much more difficult to speak English than to speak French
A. To speak French is more difficult than to speak English
B. To speak English is more difficult than to speak French
C. Speaking English is more difficult than to speak French
D. Speaking French is not as difficult as to speaking English
3. My interview lasted longer than yours
A. Your interview wasn't as short as mine
B. Your interview was shorter than mine
C. Your interview was as long as mine
D. Your interview was lonfger than mine
4. When I was younger, I used to go climbing more than I do now
A Now I don't go climbing anymore
B. I used to go climbing when I was younger
C. Now I don't go climbing as much as I did
D. I don't like going climbing anymore
5. Your coffee is not as good as mine
A. Mine is better than yours
B. My coffee is better than your
C. My coffee is better than yours
D. My coffee is more good than yours
6. I can't cook as well as my mother does
A. My mother can cook better than I can
B. My mother can't cook better than I can
C. My mother can cook well than I can
D. I can cook better than my mother can
7. Murder is the most serious of all crimes
A. Murder is very serious
B. No crime is more serious than murder
C. Everyone is very afraid of murder
D. Murder is the dangerous crime
8. This is the best music I have ever heard
A. I've never heard better music than this
B. I've ever heard such a good music as this
C. I've ever heard so good music as this
D. This is the first time I've heard this good music
9. This is the most interesting novel I've ever read
A. Knowing that the novel will be interesting, I read it
B. If only I had known the novel was so interesting, I'd have read it earlier
C. I don't think it is the most interesting, I'd have read it earlier
D. I have never read a more interesting novel than this
Question 1:Fill in each blank with one suitable word:
Most of the addicts are men. They come home from work, eat their meal quickly and then spend the evening on their computers. Some of them make programs, but most of them just play games. Some wives say the computer is killing their marriage. Their husbands play until three or four o'clock in the morning and all weekend. People call these lonely wives "computer windows".
When television became popular in the 1950s,doctors said it caused "television neck", "TV eyes" and other new illnesses. Now it is the home computer. People say it causes headaches, backaches and make their eyes tired. But worst of all, it is addictive. That means it is like drinking, smoking or taking drugs. Some people can't stop doing it.
Question 3:
A/ Choose the letter of the underlined portion which is not correct and correct it.
1.There's a new Oriental restaurant in town, isn't it?
\(\rightarrow\) isn't there
2.Nam seldom pays his bills on time, and his brother too.
\(\rightarrow\) doesn't, either
3.Mai didn't go to the zoo with her friends last Sunday because her sickness.
\(\rightarrow\) because of
4.The water and land around the chemical factory are serious polluted.\(\rightarrow\) seiously
5.Our neighbor will look for the garden when we go on holiday.
\(\rightarrow\) after
B/ Use rhe following sets of words and phrases to write complete sentences:
1. Look!/ sun/set/mountains.
-> Look! The sun is setting behind the mountains.
2. I/wait/half an hour/but she/not come.
-> I have waited for half an hour but she have not come.
3. If I/be/ him/ I/choose/ English/ learn.
-> If I were him, I would choose English to learn.
4. In/ end/ I decided/ not buy/ dictionary/ because/ too expensive.
-> In the end I decided not to buy the dictionary because it was too expensive.
5. This video film/ so interesting/ I/ see/ twice.
-> This video film is so interesting that I see it twice.
Question 4: Rewrite the following sentences, beginning each sentences with the cues:
1. Ann is good-looking and well-behaved.
- Not only is Ann good- looking but also she is well- behaved.
2. I think you should tell the police about the accident.
- If I were you, I would tell the police about the accident.
3."Have you hot any free time next week?" Mandy asked.
- Mandy asked me if I have hot any free time the following week.
4. She can't have more children because of her age.
- She is too old to have more children.
5.The children's singing was really beautiful.
- The children sang beautifully.
6. It's a cross-country vehicle with five doors.
- It's a five- door cross- country vehicle.
7.I think that no city in the world is more beautiful than Paris.
- I think Paris is the most beautiful city in the world.
8.The flight to Moscow lasted three and half hours.
- It took me three and half hours to fly to Moscow.
9. Henry regretted buying the second-hand car.
- Henry wished he had not bought the second- hand car.
10.I tried as hard as I could, but I just couldn't get the money.
- No matter how hard I tried, I just couldn't get the money.
1.Tuyet is the tallest girl in our class
=>No one else in our class is taller than Tuyet
2.Tuan is the best football player in this team
=>Nobody in this team plays football better than Tuan
3.My salary is high but hers is higher
=>My salary isn't as high as hers
4.Jane cooks better than her sister
=>Jane's sister doesn't cook as well as Jane
5Jack is younger than he looks
=>Jack isn't as old as he looks
6.I didn't spends as much money as you
=>You spent more money than I did
7.I think no city in the world is more beautiful than Paris
=>I think Paris is the most beautiful city in the world
=>No city in the world is as beautiful as Paris
8.This is the most luxurious hotel I have ever stayed in
=>I have never stayed in such a luxurious hotel before
=>I have never stayed in a more luxurious hotel than this
9.Helen has the least free time for her family
=>No one else has less free time for family than Helen
IV. Finish each of the following sentences in such a way that it is as similar as possible in meaning to the original sentence.
1. He drives more carefully than he used to.
He used to.drive more carefully .
2. My friend can't sing.
My friend wishes..she could sing
3. "I'm a student now," She said.
She said that.she was a student then ...
4. They are playing football at the moment.
Football.is being played at the moment .
5. Her father gave up smoking three months ago.
Her father hasn't..smoked for three months
6. If you don't sing an English song, you can sing a Vietnamese one. Unless you sing an Ế songs, you can sing a Vietnamese one
7. "Do you live here?" Linda asked. Linda asked me if l lived there
8. Why don't you save your money?
She suggesteds that you should save your money
IV. Finish each of the following sentences in such a way that it is as similar as possible in meaning to the original sentence.
1. He drives more carefully than he used to.
He used to..drive more carefully
2. My friend can't sing.
My friend wishes..he could sing
3. "I'm a student now," She said.
She said that....she wass a student then
4. They are playing football at the moment.
Football.. is being played at the moment.
5. Her father gave up smoking three months ago.
Her father hasn't.. smoked for three months
6. If you don't sing an English song, you can sing a Vietnamese one. Unless If you don't sing an English song, you can sing a Vietnamese one.
7. "Do you live here?" Linda asked.
Linda asked. if i lived there
8. Why don't you save your money?
She suggesteds that i should save my money
Write the second sentence so that it has the same meaning to the first one :
1. I think it would be a good idea to take the train.
=> I suggested ...........taking the train...........
2. She went out, nut she didn't say a word.
=> She went out without ......saying a word......
3. I often go to bed late.
=> I am used ......to going to bed late........
4. What about going to the cinema tonight ?
=> Shall we ........go to the cinema tonight........ ?
5. " Why don't you go with me ? ", he asked me.
=> He asked me why ......I didn't go with him........
6. She enjoys going swimming.
=> She is interested in .....going swimming..........
7. Does he spend most of his free time playing video games ?
=> Does it take .......he most of his free time to play video games....... ?
8. Does it take you 3 hours to do this task ?
=> Do you spend .......3 hours doing this task... ?
9. Lan didn't have breakfast, so she is very hungry now.
=> Because Lan ........didn't have breakfast, he is very hungry now........
10. Ho Chi Minh City is the largest city in Viet Nam.
=> No cities .......in Viet Nam are as large as Ho Chi Minh City.........
I.Điền dạng đúng của từ trong ngoặc :
1.My brother is an (electric) ..electrical........ engineer.
2. You must write your ( apply ) ....application......... form clearly.
3. We celebrate our (depend) ......independence...... Day on September 2nd.
4. His friends ( courage) ........encouraged....... him a lot in his career.
5. English is (wide)......widely ..... used in many countries in the world.
6. You must be (care) ....careful........... when you open that door .
7.I was so disappointed that all my efforts ended in (fail).......failure......
II. Complete the sentences by putting the passive form of a verb in each blank ( be vp2)
Eg : I want to be invited to the party.
1. The music at that party was very loud and loud ....and could be heard........... from far away.
2.Her new book will probably .be translated............. into a number of foreign languages.
3.We .....took...... 40 hours to go from Hanoi to HCM city by train.
4. Your car may .....not be opened............ if you have left the keys in it.
5. The injured man couldn't walk and had to .....be carried........ to the hospital.
III. Give the correct form :
1. This is very ( convenience ) ...inconvenient........ ! Can't you practice your violin somewhere else ?
2. She was a much less (industry)........industrial........ student than her sister.
3.She's got a job as a (manage) ..........manager....... of a dress shop.
4. There is a (short) .......shortage........ of carrots because of the bad weather.
5. Even though the remark was not (intend) ...intentional........... , it caused embarrassment.
6. They said my illness was (imagine).........imaginary....... Don't they realize I;m in a lot of pain ?
7. He spoke (sense) ....insensitively............. to her, and she began crying immediately.
IV. Use the correct form of the words in blankets
1. The bank's actions attracted ( wide ) ...widely............ hard criticism.
2. We all know that there is no easy ( solve) .......solution............ to this problem but we must try our best.
3. Don't worry. I'll try to finish this word ( succeed ) .....successfully.............
4. Preserving natural resources is of great (important).......importance.....
5. That restaurant often attracts a lot of customers because of its ( special ) ....specialization.........
1. They no longer write to each other.
-> They used .....to write to each other. ..........
2. I can't get that job because I don't know English.
-> If......knew english, i could get that job.............
3. I think that no city in the world is more beautiful than Paris.
-> I think Paris ....is the most beautiful city in the world.........
4. " Is your mother cooking in the kitchen now?" I said to Lan
-> I asked Lan ....if her mother was cooking in the kitchen then......