1)She can't work hard because she very old.

→Because of being old, she can't work hard

2)He like her because she is beautiful.

→Because of her beauty, he likes her

3)He couldn't go to school because he was very poor.

→Because of his poverty, he couldn't go to school 

4)I can't buy this bike because I don't have enough money.

→Because of not having enough money, I can't buy this bike 

5)We can't go for a walk because it rains heavily.

→Because of the heavy rain, we can't go for a walk

6)He left school because his life was hard.

→Because of his hard life, he left school

7)He couldn't meet you because of being busy.

→Because he was busy, he couldn't meet you

8)She went to bed early because of her sickness.

→Because she was sick, she went to bed early

9)Tow cars can't pass each other because of the  narrow road.

→Because the road is narrow, two cars can't pass each other

10)We spent the whole day in the garden because of lovely weather.

→Because the weather was lovey, we spent the whole day in the garden

11)We can swim in this part of the river because of highly polluted water.

→Because the water was highly polluted, we can swim in this part of the river

1. She can not work hard because she is very old

because of being very old, She cannot work hard

2. He likes her because she is very beautiful

because of her beauty, he likes her

3. He couldn't go to school because he was very poor

because of being very poor, He couldn't go to school

4. I can't buy this bike because I don't have enough money

because of not having enough money, I can't buy this bike

5. He broke the vase because he was careless

because of being careless, He broke the vase

6. He failed the exam because he didn't learn the lessons carefully

because of not learning the lessons carefully, he failed the exam

7. We can't go for a walk because it rains heavily

because of heavy rain, We can't go for a walk

8. He left school because his life was hard

because of the hard life, he left school

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

because of being given a new bike, she was very happy

10. I went to bad early because I felt tired

because of feeling tired, I went to bed early

Using " because of"

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 couldn't go to school because he was very poor.

......................................He couldn't go to school because of being very poor........................................

4. 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........................................................

5. He broke the vase because he was careless.

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

6. He failed the exam because he didn't learn the lesson carefully.

.................He failed the exam because of learning the lesson carelessly...............................................................

7. We can't go for a walk because it rains heavily.

................................We can't go for a walk because of the heavy rain............................................

8. He left school because his life was hard.

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

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

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

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

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

I. Rewrite:

1. We can’t swim in this river because the water is polluted.

Because of the polluted water, we can't swim in this river

2. We can’t come to the party on time since there are a lot of trafficon the streets.

Because of a lot of traffic on the streets, we can't come to the party

3. Although he was sick, he wanted to go out. ( but)

He was sick but he wanted to go out

4. I can’t buy this bike because I don’t have enough money. ( therefore)

I don't have enough money; therefore, I can't buy this bike

5. He failed the exam as he didn’t learn lessons.

Because he didn't learn lessons, he failed the exam

6. I can’t go to school to day because I have a toothache.

Since I have a toothache, I can't go to school

7. Nobody can answer this question because of its difficult.

Because this question is difficult, nobody can answer it

8. He can’t play basketball because of his height.

Because he was not tall, he can't play basketball

9. He can’t meet you because of being busy.

Since he is busy, he can't meet you

Although the wether was bad, they decided to go for a pinic

Because of the rain, we decide to postpone our trip

Though I felt tired, I had to finish this work

Because of being old, she can't work

1. He can't this suicase because he is very old

He can't this suitcase because of being very old

2. He broke the vase because he was careless

He broke the vase because of being careless

3. He doesn't have money. He can't buy a new bicycle

If he had money, he could buy a new bicycle

4. She was hungry so she had big lunch

She had big lunch because she was hungry

5. All the shops were shut because it was a public day

It was a public day, so all the shops were shut

1. He can't this suicase because he is very old

He can't this suitcase? because of his old age.

2. He broke the vase because he was careless

He broke the vase because of his carelessness.

3. He doesn't have money. He can't buy a new bicycle

If he had money , he would buy a new bicycle.

4. She was hungry so she had big lunch

She had big lunch because she was hungry.

5. All the shops were shut because it was a public day.It was a public day so all the shops were shut.

1.Hoa could buy that house because she was rich.
=>Hoa was rich, so she could buy that house
2.Because the rain was so heavy,I couldn't go to school.
=>Because of the heavy rain, I couldn't go to school.
3.His father asked him to stay at home because he was sick.
=>His father asked him to stay at home because of his sickness
4.Because there was an accident,I was late.
=>Because of an accident, I was late.
5.She failed the University entrance exam because her grades were bad.
=>She failed the University entrance exam because of her bad grades 
6.Because of the cheap price,my wife insists on buying the TV.
=>Because the price is cheap, my wife insists on buying the TV.
7.Because I studied hard,I passed the exam.
=>Because of studying hard,I passed the exam.
8.Nam can learn very fast because he is an intelligent student.
=>Nam can learn very fast because of being an intelligent student.
9.Because it was raining heavily,we didn't go to school.
=>Because of the heavy rain, we didn't go to school.

1. I couldn't do the test because it was difficult.

Because of the difficult test, i couldn't do it.

2. Although he got up early, he was late for the first train

In spite of getting up late, he was late for the first train

3. Although my friend doesn't have enough money, she wants to buy that new car.

Despite not having enough money, she wants to buy that new car.

4. We arrived late because of the bad traffic

Because the traffic was bad, we arrived late

5. She didn't buy the house because the price was very high

Because of the high price, She didn't buy the house

6. She only accepted the job because of the high salary

Because the salary was high, she only accepted the job

7. We couldn't sleep because the weather was hot.

Because of the hot weather, we couldn't sleep

8. I enjoyed the film although the story was bored

in spite of the bored story, I enjoyed the film

9. He didn't arrive until 9 o'clock although he promised that he wouldn't be late.

In spite of promising that he wouldn't be late, he didn't arrive until 9 o'clock

10. Although he was seriously ill, he was determined to finish his work

In spite of his serious illness, he was determined to finish his work

11. Mary went to bed early because she felt tired

Because of feeling tired, Mary went to bed early

11) Many people began to wearing jeans because they were cheap

Because of the cheapness of jeans, many people began to wearing them

12) Since he was careless, Tom lost the game

=> Because of his carelessness, Tom lost the game

13) Although she behaves well, no one loves her

Despite her good behaviour, no one loves her

14) Because of the cold weather, the crops are late this year

=> Because the weather was cold, the crops are late this year

15) Mary was worried because Tom was late

=> Because of Tom's lateness, Mary was worried

16) Tom walked slowly because his leg was bad.

=> Because of his bad leg, Tom walked slowly

17) I came here because I want the English course.

=> Because of wanting the English course, I came here

18) I went to school although it was hot.

=> Despite the hot weather, I went to school

19) Because of the dust in the room, I can't go in.

Because there is the dust in the room, I can't go in

20. She didn't go to the circus with Betty because she had a bad cold.

Because of her bad cold, She didn't go to the circus with Betty

1. It rained heanily yesterday so we couldn't play football

=> We couldn't play football because it rained heavily yesterday.

2. I won't buy this bike because i dont't have enough money

=> I don't have enough money so I won't buy this bike.

3. Study hander or you will fail the final exam

=> If you study harded, you will not fail the final exam.

4. They don't visit me because he didn't know i was will

=> He didn't know I was ill so they don't visit me.

5. I didn't go to the party because i had a cold

=> I had a cold so I didn't go to the party.