31 The door will be shut if you like

32 A horrible accident has just been seen by us

33 What language is spoken in this country?

34 At 7 p.m, cakes are were being made

35 THat house isn't going to be bought

37 You haven't been seen for years

38 The passage will be read 3 times by the examiner

39 The town was destroyed by an earthquake

40 THe letter wasn't typed by him last light

41 I will be picked up at my house

42 When was he seen in that bank by you?

43 The keys were returned to me by a man

44 Her friends will be seen off by Mary  at the station

45 That building has to be pullled down

46 I was given a knife by him to cut this bread

.31. I will shut the door if you like.

=> The door will be shut if you like.

32. We have just seen a horrible accident

=> A horrible accident has just been seen.

 33. What language do people speak in this country?

=> What language is spoken in this country?

 34. At 7 p.m., Mrs. Smith was making cakes.

=> Cakes were being made by Mrs. Smith at 7p.m.

 35. He isn’t going to buy that house

=> That house isn't going to be bought by him.

.36. This terrorist has kept 3 hostages for a week.

=> 3 hostages have been kept by this terrorist for a week.

37. He hasn’t seen you for years.

=> You haven't been seen by him for years.

 38. The examiner will read the passage 3 times.

=> The passage will be read 3 times by the examiner.

39. An earthquake destroyed the town.

=> The town was destroyed by an earthquake.

40. He didn’t type the letter last night.

=> The letter wasn't typed by him last night.

 41. They will pick me up at my house.

=> I was picked up at my house.

 42. When did you see him in that bank?

=> When was he seen in that bank?

 43. A man returned the keys to me.

=> The keys were returned to me.

 44. Mary will see her friends off at the station.

=> Her friends will be seen off at the station by Mary.

 45. They have to pull down that building.

=> That building has to be pulled down.

 46. He gave me a knife to cut this bread.

=> A kinfe was given to me to cut this bread.

1. Cows were eating grass on the meadow.

grass was eaten on the meadow by cows.

2. Mycousin will meet you at the station.

you will be met at the station by my cousin.

3. She is running her own company.

her own company is being ran

4. Visitors must leave umbrellas and raincoats in t he cloakroom.

umbrellas and raincoats must be left in the cloakroom by visitors.

5. My mother used to make us clean the house.

we were used to making clean the house by my mother

6 john hasn't finished his homework.

john's homework hasn't been finished

7 they suggeted banning advertisements on tv.

=> advertisements were suggeted banning on tv

8 I will shut the door if you like .

=> the door will be shut if you like

9 we have just seen a horrible accident.

=> a horrible accident has just been seen by us

10 what language do people speak in this country ?

=> What language is spoken in this country ?

1. Grass on the meadow was being eaten by the cows.

2. You will be met at the station by my cousin .

3. Her own company is being ran.

4.Umbrellas and raincoats must be left in the cloakroom (by the visitors)

5.We used to be made to clean the house (by my mother).

6. John’s homework hasn’t been finished.

7. It was suggessted that advertisements be banned on TV.

8. The door will be shut if you like.

9. A horrible accident has just been seen (by us).

10. What language is spoken in this country?

Chuyển những câu này sang thể bị động:

They didn’t look after the children properly. …………The children weren't looked after properly…………………………………………

Nobody swept this street last week. ………………This street wasn't swept last week……………………………………………

People drink a great deal of tea in England. ……………………A great deal of tea is drunk in England………………………………

People speak English all over the world. …………………English is spoken all over the world……………………………………

Tom was writing 2 poems. ………………………2 poems were being written by Tom………………………………………………

She often takes her dog for a walk……………Her dog is often taken for a walk………………………………………………….

She didn’t introduce me to her mother. …………………I wasn't introduced to her mother………………………………………

Farmers usually milk cows twice a day. ……………Cows are usually milked twice a day……………………………………………

He likes people to call him “sir”. ……………………He likes to be called "sir"…………………………………………

Our teacher used to bid us talk in class. …………………We used to be bidden talk in class………………………………………

Don’t let other see you. ………………Don't let yourself be seen by others……………………………………………………

The children weren’t looked after properly.

This street was swept last week.

A great deal of tea is drunk in England. 
English is spoken all over the world.

2 poems were being written by Tom.
Her dog is often taken for a walk.
I wasn't introduced to her mother.
Cows are usually milked twice a day by farmers 

He likes being called "Sir".
We used to be bidden to talk in class by our teacher.
Don't let yourself be seen.

Chuyển sang câu bị động:
1. She often takes her dog for a walk.

=> Her dog is often taken for a walk.
2. Farmer usually milk cows twice a day.

=>(Ko có động từ =.=")

3. People know that Japan produces a wide range of cars.

=> Japan is known to produce a wide range of cars.
4. What language do people speak in this country?

=> What language is spoken in this country?

Chuyển sang câu bị động
1. She often takes her dog for a walk

-> Her dog is often taken for a walk.
2. Farmer usually milk cows twice a day

-> Cows are usually milked twice a day by farmers.

3. People know that Japan produces a wide range of cars

-> Japan is known to produce a wide range of cars.
4. What language do people speak in this country ?

-> What language is spoken in this country?

1.  How many games have been played by the team?

2. Where is English spoken?

3. Who are being kept in the kitchen?

4. How can this safe be opened?

5. What book are being read this year?

à?

Bài 2: Chuyển các câu sau sang câu bị động

1. How many games has the team played? à

How many games have been played by the team?

2. Where do people speak English? à

Where is English spoken?

3. How can they open this safe? à

How can this safe be opened ?

4. What books are people reading this year? à

What books are being read this year?

5. How did the police find the lost man? à

 How was the lost man found by the police?

6. What time can the boys hand in their papers? à

 What time can their papers be handed in by the boys?

7. Who lend you this book? à

By whom is this book lent?

8. How many marks does the teacher give you? à   

How many marks are given to you by the teacher?                                          

1. Lan has his father do her homework.

Lan has her homework done by her father

2. They got us clean up the streets.

They got the streets cleaned up by us

3. They think Nam is the best student in the class.

It is thought that Nam is the best student in the class.

4. People said that the government copmpleted this project.

It was said that the government copmpleted this project.

5. They have just repoted that we will have a test tomorrow

It has just been reported that we will have a test tomorrow

1. Lan has her homework done by her father

2. They got the streets cleaned up by us

3. It is thought that Nam is the best student in the class.

4. It was said that the government copmpleted this project.

5. It has just been reported that we will have a test tomorrow

1. Lan has his father do her homework.

Lan has her homework done by her father

2. They got us clean up the streets.

They got the streets cleaned up by us

3. They think Nam is the best student in the class.

It is thought that Nam is the best student in the class.

4. People said that the government copmpleted this project.

It was said that the government copmpleted this project.

5. They have just repoted that we will have a test tomorrow

It has just been reported that we will have a test tomorrow

1

Với \(\left\{{}\begin{matrix}x\ne2\\x\ne-1\\x\ne\sqrt{\dfrac{1}{2}}\end{matrix}\right.\)

\(M=\left(\dfrac{x-1}{2-x}-\dfrac{x^2}{x^2-x-2}\right)\left(\dfrac{x^2+2x+1}{4x^4-4x^2+1}\right)\\ =\left(\dfrac{\left(x-1\right)\left(x+1\right)}{\left(2-x\right)\left(x+1\right)}+\dfrac{x^2}{\left(x+1\right)\left(2-x\right)}\right)\left(\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\right)\\ =\dfrac{x^2-1+x^2}{\left(x+1\right)\left(2-x\right)}\left(\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\right)\\ =\dfrac{\left(2x^2-1\right)\left(x+1\right)^2}{\left(x+1\right)\left(2-x\right)\left(2x^2-1\right)^2}\\ =\dfrac{x+1}{\left(2-x\right)\left(2x^2-1\right)}\)

2

Để M = 0 thì \(\dfrac{x+1}{\left(2-x\right)\left(2x^2-1\right)}=0\Rightarrow x+1=0\Rightarrow x=-1\) (loại)

Vậy không có giá trị x thỏa mãn M = 0

1) \(M=\left(\dfrac{x-1}{2-x}-\dfrac{x^2}{x^2-x-2}\right)\cdot\dfrac{x^2+2x+1}{4x^4-4x^2+1}\) (ĐK: \(\left\{{}\begin{matrix}x\ne2\\x\ne-1\\x\ne\sqrt{\dfrac{1}{2}}\end{matrix}\right.\))

\(M=\left(\dfrac{-\left(x-1\right)}{x-2}-\dfrac{x^2}{\left(x-2\right)\left(x+1\right)}\right)\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(M=\left(\dfrac{-\left(x-1\right)\left(x+1\right)}{\left(x-2\right)\left(x+1\right)}-\dfrac{x^2}{\left(x-2\right)\left(x+1\right)}\right)\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(M=\left(\dfrac{-\left(x^2-1\right)-x^2}{\left(x-2\right)\left(x+1\right)}\right)\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(M=\left(\dfrac{-x^2+1-x^2}{\left(x-2\right)\left(x+1\right)}\right)\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(M=\dfrac{-2x^2+1}{\left(x-2\right)\left(x+1\right)}\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(M=\dfrac{-\left(2x^2-1\right)\left(x+1\right)^2}{\left(x-2\right)\left(x+1\right)\left(2x^2-1\right)^2}\)

\(M=\dfrac{-\left(x+1\right)}{\left(x-2\right)\left(2x^2-1\right)}\)

2) Ta có: \(M=0\)

\(\Rightarrow\dfrac{-\left(x+1\right)}{\left(x-2\right)\left(2x^2-1\right)}=0\)

\(\Leftrightarrow-\left(x+1\right)=0\)

\(\Leftrightarrow-x=1\)

\(\Leftrightarrow x=-1\left(ktm\right)\)

1: \(M=\left(\dfrac{-x+1}{x-2}-\dfrac{x^2}{\left(x-2\right)\left(x+1\right)}\right)\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(=\dfrac{-x^2+1-x^2}{\left(x-2\right)\left(x+1\right)}\cdot\dfrac{\left(x+1\right)^2}{\left(2x^2-1\right)^2}\)

\(=\dfrac{1-2x^2}{\left(x-2\right)}\cdot\dfrac{x+1}{\left(1-2x^2\right)^2}=\dfrac{x+1}{\left(x-2\right)\left(1-2x^2\right)}\)

2: M=0

=>x+1=0

=>x=-1(loại)

1. English is spoken all over the world

2.Mr.Nam gives lectures in universities everyday

lectures are given everyday by mr Nam in universities

3.My dictionary doesn't give any example of this word.

example of this word isn't given in My dictionary

4.what language do people speak in thí country ?

Whixh language is spoken in thí country

5. how many books do you give me ?

How many book am i given?

6. do people use for making butter and cheese ?

Is milk used for making butter and cheese

7.Noone grows flowers in this place .

flowers are not grown in this place .

1. People speak English all over the world.
=> English is spoken all over the world.
2.Mr. Nam gives lectures in universities everyday
=> Lectures are given in universities by Mr. Nam everyday.
3.My dictionary doesn't give any example of this word.
=> Example of this word isn't given in my dictionary.
4.what language do people speak in this country ?
=> What language is spoken in this country?
5. how many books do you give me ?
=> How many books am I given?
6. do people use milk for making butter and cheese ?
=> Is milk used for making butter and cheese?
7. No one grows flowers in this place.
=> Flowers aren't grown in this place.