并列連詞

because：因為，連接原因狀語從句

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

因為她病了，所以她沒去那兒。

1.回答Why問句時，只能用because，不能用for或 as.

Why are you late？

你為什么遲到？

Because I met a traffic accident on my way here.

因為在我來這兒的路上，遇到了車禍。

2.漢語中，我們經(jīng)常說因為……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.

因為他累了，所以他不能走到那兒了。