`-` Áp dụng:

`+)` S + V + O, because S + V + O 

`+)` Because + 1 mệnh đề có nghĩa là bởi vì điều gì đó đã xảy ra, hay bởi vì ai đó đã làm gì. Sau because luôn là một mệnh đề có chủ ngữ động từ đầy đủ. 

`1.` We were quite tired because we worked very hard in the garden.

`2.` Nam went to bed early because he was tired.

`3.` Lan is very busy because she is having her final examination.

`4.` Ba felt worried because he had a serious toothache.

`5.` Mai had a nice gift because she studied hard this school year.

`6.` We had to start very early this morning because we didn't want to miss the bus.

`7.` Tam is sad because she misses her parents.

`8.` The machine doesn't work because there is no electricity.

`9.` Hoa brushes her teeth regularly because she doesn't want to have cavities in her teeth.

`10.` We go to nha Trang this summer because we want to visit Tri Nguyen Aquarium.

`1.` We were quite tired because we worked very hard in the garden.

`2.` Nam went to bed early because he was tired.

`3.` Lan is very busy because she is having her final examination.

`4.` Ba felt worried because he had a serious toothache.

`5.` Mai had a nice gift because she studied hard this school year.

`6.` We had to start very early this morning because we didn't want to miss the bus.

`7.` Tam is sad because she misses her parents.

`8.` The machine doesn't work because there is no electricity.

`9.` Hoa brushes her teeth regularly because she doesn't want to have cavities in her teeth.

`10.` We go to nha Trang this summer because we want to visit Tri Nguyen Aquarium.

`+)` S + V + O, because S + V + O