I. Rewrite the sentences, using “because”.

Example:   He couldn’t meet you because of being busy.

               " He couldn’t meet you because he was busy.

1. She must stay in bed because of her sickness.

" …………………………………She must stay in bed because she is sick………………………………………………………………

2. Two cars can’t pass each other because of the narrow road.

" ……………………………………………Two cars can’t pass each other because the road is narrow……………………………………………………

3. Nobody can’t do this test because of its difficulty.

" ……………………………………Nobody can’t do this test because it is difficult……………………………………………………………

4. They couldn’t keep on clearing the beach because of heavy rain.

" ……………………………………………… They couldn’t keep on clearing the beach because it rained heavily…………………………………………………

5. She can’t work hard because of her age.

"…………………………………She can’t work hard because she is old……………………………………………………………….

  II. Rewrite these sentences, using “because of “

1. She can’t work hard because she is very old.

" ………………………………She can’t work hard because of her age.…………………………………………………………………

2. He likes her because she is beautiful.

" ………………………………He likes her because of her beauty……………………………………………………………….

3. I can’t buy this bike because I don’t have enough money.

" ……………………………I can't buy this bike because of not having enough money………………………………………………………………….

4. She was very happy because she was given a new bike.

" …………………………………She was very happy because  of being given a new bike…………………………………………………………….

1. she can't work hard because she is very old.

............................she can't work hard because of being very old.....................................................

2. He likes her because she is very beautiful.

.....................He likes her because of her beauty...................................................

3. He broke the vase because he was careless.

...................He broke the vase because of being careless..........................................................

 4.He left school because his life was hard.

......................He left school because of his hard life .....................................................

5. I went to bed early because I felt tired.

.....................I went to bed early because of feeling tired..................................................

1. He couldn't meet you because he was busy

2. She went to bed early because she was sick

3. We spent the whole day in the garden because the weather was lovely

4. I can't play volleyball because I'm not tall

5. We can't swim in this part of the river because the water is highly polluted

He couldn't meet you because he was busy

She went to bed early because she was sick

We spent the whole day in the garden because the weather was lovely

I can't play volleyball because I'm short

We can't swim in this part of the river because the water is highly polluted

Exercise 5: Rewrite the sentences, using because/because of

1.    He didn’t come because of his sickness.

=>He didn’t come because he was sick

2.    The train was late because the fog was thick.

=>The train was late because of the thick fog

3.    The plane couldn’t take off because of the bad weather.

=>The plane couldn’t take off because the weather was bad

4.    He left the school because his family was poor.

=> He left the school because of his poor family 

5.    We couldn’t study because of the noise.

=>We couldn’t study because it was noisy

6.    I didn’t go swimming because it was cold.

=> I didn’t go swimming because of the cold

7.    These students arrive late because of the bad traffic.

=>These students arrive late because the traffic is bad

8.    Mary can’t sleep because she has drunk a cup of strong coffee.

=>Mary can’t sleep because of drinking a cup of strong coffee.

9.    Because of getting up early, he wasn’t late for the first train.

=>Because he got up early, he wasn’t late for the first train.

10.  He was accepted for the job because he had much experience.

=>He was accepted for the job because of having much experience.

Exercise 6: Rewrite the sentences, using because/because of

1.    Kevin has failed many times, so he disappointed.

=> Because Kevin has failed many times, he disappointed.

2.    I had not eaten for 24 hours. I was very hungry.

=> Because I had not eaten for 24 hours, I was very hungry.

3.    He ate all the fruits. The fruits were ripe.

=> He ate all the fruits because they were ripe.

4.    He hadn’t finished the letter. He didn’t go to sleep.

=> Because he hadn’t finished the letter, he didn’t go to sleep.

5.    He is dismissed. He was late for the work very often.

=>He is dismissed because of being late for the work very often.

6.    He drove too fast. He caused a serious accident.

=> Because of driving too fast, he caused a serious accident.

7.    The streets are narrow, so there are not many people driving cars in this city.

=> Because the streets are narrow, there are not many people driving cars in this city.

8.    The test was so difficult that I couldn’t do it.

=>   Because the test was so difficult, I couldn’t do it.

9.    I don’t know Russian. I have to have my document translated into Russian.

=> Because I don’t know Russian, I have to have my document translated into Russian.

10.  The children had an accident. They went to school late.

=>The children had an accident because of going to school late.

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Rewrite the sentences, using Conditional sentences type 2 or 3:
1. He didn't hurry, so he missed the train.

=>If he had hurried , he wouldn't have missed the train .
2. My brother didn't leave the car keys, so I couldn't pick him up at the station.

=> If my brother had left the car keys, I would have picked him up at the station.

3. We didn't go because it rained.

=> If it hadn't rained, we would have gone.
4. We didn't go on holiday because we didn't have enough time.

=> If we had had enough money, we would have gone on holiday.
5. Susan felt sick because she ate four cream cakes.

=>If Susan hadn't eaten four cream cakes, she wouldn't have felt sick.

1. If he had hurried, he wouldn't have missed the train

2. If my brother had left the car keys, I could have picked him up at the station

3. If it hadn't rained, we would have gone

4. If we had had enough time, we would have gone on holiday

5. If Susan hadn't eaten 4 cream cakes, she wouldn't have felt sick

The accident happened because he drove carelessly. (Rewrite, using "due to")

- The accident happened due to his careless driving / his carelessness

7. I don't know his new address. I can't visit him. (Rewrite, using "If")

- If I knew his new address, I could visit him

8. The fish die because of water pollution in this river. (Combine the two sentences into one. using "leads to")

- Water pollution leads to the death of the fish in this river 

I don't have enough money, so I can't buy a new dictionary. (Rewrite, using "If")

-if I had enough money, I could buy a new dictionary

"You must finish all these exercises before going out with your friends tonight."

- Nam's mother said (that) he had to finish all those exercises before going out with his friends that night

- the accident happened due to his careless driving

- if i knew his address, i could visit him

- the water pollution in this river leads to the death of the fish

- if i had enough money, i could buy a new dictionary

- nam's mother said he had to finish all those exercises before going out with his friends that night

Rewrite the following sentence by using Because + clause, Because + N/ cụm N :
1. He is bad at English because he is very lazy.

=> He is bad at English because of his laziness.
2. He didn't come to class because of his illness.

=> He didn't come to class because he was ill.
3. Everyone likes and admires her because of her intelligence.

=> Everyone likes and admires her because she is intelligent.
4. The flight 202 was delayed because the weather was bad.

=> The flight 202 was delayed because of the bad weather.
5. I didn't come on time because it rained heavily.

=> I didn't come on time because of the heavy rain.
6. They can't miss the meeting because of its importance.

=> They can't miss the meeting because it is important.
7. I was late for the meeting because the traffic was heavy.

=> I was late for the meeting because of the heavy traffic.
8. My grandmother can't work hard because of her age.

=> My grandmother can't work hard because she is old.