并列连词

because:因为,连接原因状语从句

She didn't go there,because she was ill.

因为她病了,所以她没去那儿。

1.回答Why问句时,只能用because,不能用for或 as.

Why are you late?

你为什么迟到?

Because I met a traffic accident on my way here.

因为在我来这儿的路上,遇到了车祸。

2.汉语中,我们经常说因为……所以,但在英文中有了because,就不能再用so。

(×)Because he was tired, so he couldn't walk there.

因为他累了,所以他不能走到那儿了。