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1.The water is too hot. He wait until it's cool to drink (so)
-> The water is too hot so he wait until it's cool to drink.
2. I didn't follow mt mother's advice. I regret now (wish)
-> I wish I had followed my mother's advice.
3. It isn't necessary for you to let her know the news
-> You don’t need to let her know the news.
1. It isn't necessary for you to finish the work today.
=>You don't..........have to finish the work today................................................
2.Mr.John couldn't enjoy the meal because of his stomachache
=>The stomachache prevented..........Mr.John from enjoying the meal.........................................
3.Neither Lan nor her friends like durians.
=>both.......Lan anh her friends don't like durians.................................................
4.i think that you shouldn't make too much noise.I am doing my homework.
=>I'd rather........you didn't make too much noise because I am doing my homework...................................................
5.We have to delay the journey to Ho Chi Minh City because it is raining heavily.
=>because of......the heavy rain, we have to delay the journey..................................................
6.There are 365 days in a year
=>A year........has 365 days.................
1.The chair isn't safe.Don't stand on it.
The chair isn't safe enough for you to stand on.
2.I haven't been to the cinema for two months.
The last time I went to the cinema is 2 months ago.
3.It is thought that the accident was caused by human error.
The accident is thought to have been caused by humon error.
4."Would you like to come to my party tomorrow?"Jean invited me.
Jean invited me to come to her party the next day.
5.I"ll introdude you to the man.His support is necessary for your project.
I"ll introduce you to the man whose support is necessary for your project.
Chúc bạn học tốt
Mạnh dạn đoán đề là viết lại câu sao cho nghĩa không đổi. 
1. Robot cannot help us do our homework. 👉 Robot is unable to help us do our homework.
2. It isn't necessary for you to clean every room in the house now. 👉 You don't need to clean every room in the house now.
Chúc em học vui vẻ!
Write these sentences again using MUST or HAVE TO in place of the words in italics.
Vd: it is necessary FOR YOU TO work hard .
You must (or' have to) work hard
1. It will be necessary FOR YOU TO see a doctor.
=> you must / have to see a doctor
2. Is it necessary FOR YOU TO make so much noise?
=> Do you have to make so much noise ?
3. She said IT WOULD BE NECESSARY FOR US TO stay here.
=> she said we had to stay here
4. IT WAS NECESSARY FOR HIM TO go out last night.
=> he had to go out last night
5. IT IS NECESSARY FOR ME TO have some help.
=> i must have some help
1.She last wore that dress at her sister's wedding.
She hasn't written that dress since her sister's wedding
2.Jack London didn't write the novel " The Adventures of Tom Sawyer "
The novel " The Adventures of Tom Sawyer " wasn't written by jack london
3. Computer are used to design new models.
People used to design computer new models.
4. When did you start working in that factory?
How long have you started working in that factory?
5. It isn't necessary for students to wear uniform today.
Students aren't necessary to wear uniform today.
6. Mary can't go to school because she is too young.
Mary isn't old enough to go to school.
7. Lan spends 3 hours a day doing her homework.
It takes Lan 3 hours a day to do her homework.
Read the first sentences, and then complete the second sentences with the same meaning:
1.She last wore that dress at her sister's wedding.
She hasn't....worn thet dress since her sister's wedding..............................................
2.Jack London didn't write the novel " The Adventures of Tom Sawyer "
The novel....The Adventures of Tom Sawyer wasn't wriiten by Jack................................................
3. Computer are used to design new models.
People.....use computer to design new clothes...................................................
4. When did you start working in that factory?
How long......have you been in that factory?.............................................
5. It isn't necessary for students to wear uniform today.
Students....needn't wear uniform today.................................................
6. Mary can't go to school because she is too young.
Mary isn't..........enough old to go to school........................................
7. Lan spends 3 hours a day doing her homework.
It takes Lan....3 hour a day to do her home work..........................................
1. The water was so cold that the children could not swim in it .
-> the water was not warrm enough for the children to swim in it.
2. he acted sowell that the audiena was moved to tears.
-> he acted well enough for the audience to be moved to tears.
3. she isn't very intelligent so she can't do that exerase.
-> she isn't intelligent enough to do that exercise.
4. the paper mill is very large so it can satisfy the need of the whole country
-> the paper mill is large enough to satisfy the need of the whole country.
5. those exercises are easy enough so that sould finish them in half an hour
-> those exercises are easy enough to finish them in half an hour.
6. the policeman could not run very fasst , so he was unable to catch the burglar .
-> the policeman couldn't run fast enough to catch the burglar.
7. there is not much beer so you can't all have a drink .
-> there isn't enough beer for all you to have a drink.
8. i'm very tired so i must go to bed early.
-> i'm tired enough to go to bed early.
9. Peter is too young to watch TV
-> Peter isn't old enough to watch TV.
Sentences for practice.
1. The water was so cold that the children could not swim in it .
-> The water was not warm enough for childen to swim in it.
2. he acted so well that the audiences was moved to tears.
-> He acted well enough for the audiences to move to tears.
3. she isn't very intelligent so she can't do that exercise.
-> She isn't intelligent enough to do that exercise.
4. the paper mill is very large so it can satisfy the need of the whole country
-> The paper mill is large enough to satisfy the need of the whole country.
5. those exercises are easy enough so that I could finish them in half an hour
-> Those exercises are easy enough to finish in half an hour.
6. the policeman could not run very fasst , so he was unable to catch the burglar .
-> The policeman couldn't run fast enough to catch the burglar.
7. there is not much beer so you can't all have a drink .
-> There isn't enough for you all to have a drink.
8. i'm very tired so i must go to bed early.
-> I'm tired enough to go to bed early.
9. Peter is too young to watch TV
-> Peter isn't old enough to watch TV.
1. Doing math exercises is difficult
=> It isn't easy to do math exercises
2. It isn't necessary for you to go to school so early
=> You don't need to go to school so early
3. Playing with matches is very dangerous
=> It is very dangerous to play with matches
4. It is helpful to learn English
=> Learning English is helpful
5. Must he leave now?
=> Does he need to leave now?
6. Noone helps her sweep the floor
=> She doesn't need someone sweep the floor
7. Nobody helped us tidy our rooms
=> We don't need somebody tidy our rooms
8. Nga does the housework without any help
=> Nga doesn't need someone do the housework
9. The lighting fixture is above the table
=> The table is under the lighting fixture
10. You shouldn't stay up late
=> You ought not to stay up late
1.It isn't easy to do math exercises
2. you don't need to go to school so early
3. it is very dangerous to play with matches
4.Learning English is helpful
5.Does he need to leave now?
6. She sweeps the floor by herself
7. We tidy our rooms by ourselves
8. Nga does the housework by herself
9. The table is under the lighting fixture
10. You ought not to stay up late
Bn tham khaor nha
Hok tot~