ta có cấu trúc because : 

because + S + V + O 

ta có cấu trúc because of :

because of + N / N phrase / V-ing 

1 because of 

2 because of 

3 because 

4 because 

5 because 

6 because

7 because of

8 because of 

9 because of

10 because of

1. We stopped playing tennis ...because of.... the rain.

2. It was all ....because of .... her that we got into trouble.

3. We had to hurry indoors ...because ... it was raining.

4. I am late ...because of.... the traffic.

5. We didn't arrive until seven o'clock ...because.... the traffic was terrible.

6. She found the exam easy ...because ..... she had worked hard during the course.

7. He can't drive ....because of.... his illness.

8. The restaurant closed down ...because of..... the recession.

9. He found working in Japan very difficult ...because of...... the language problem.

10. He's very difficult to understand ....because of..... his accent.

GIẢI THÍCH MỘT CHÚT: 

- Because là 1 giới từ đứng trước mệnh đề chỉ nguyên nhân.

- Because of là 1 giới từ kép, được sử dụng trước danh từ, V-ing, đại từ để chỉ nguyên nhân của sự việc, hành động.

VỀ CẤU TRÚC: 

- Because + S + V + O

- Because of + N/ N phrase / V-ing