例句：
1.I did it because they asked me to do it!
我做這事是因為他們請我做�。�
2.Jack duked me because he said I had insulted him. partly because 部分原因是
杰克用拳猛擊我，因為他說我侮辱了他。
3.The electricity wastes because they often forget to turn it off.
因為他們常常忘記關(guān)電源，所以費電。
4.I can't do it now because I am busy.
因為我正忙著，現(xiàn)在不能做此事。
5.The dog was panting because of the hot weather.
因為天熱這只狗不停地喘氣。