because是從屬連詞,接表示直接原因的從句,一般放在主句的后面,也可放在主句前面,它表示的語(yǔ)氣最強(qiáng),在回答why的問(wèn)句時(shí),必須用because.
實(shí)際上,不是因?yàn)橛蠱A degree,就一定是qualified的.因此,說(shuō)話者是根據(jù)一般事實(shí)作出的推斷,用since自然更好.
例如：The swimming pool won't be open today because they're making repairs.
游泳池今天不開(kāi)放,因?yàn)樗麄冊(cè)谛蘩?
Why did you move to France?
你們?yōu)槭裁窗岬椒▏?guó)?
Because my father found work in Paris.
因?yàn)槲腋赣H在巴黎找到了工作.
注意：在英語(yǔ)中用了because后,不可再用so.
since 意為"既然",表示對(duì)方已知的無(wú)需加以說(shuō)明的原因或事實(shí),語(yǔ)氣比because弱,但是比as 強(qiáng).
例如：Since we have no money,we can't buy that vase.
既然我們沒(méi)錢(qián),我們就不能買(mǎi)那花瓶.
Since everybody is here,let's begin our party.
既然大家都到了,那就開(kāi)始我們的聚會(huì)吧!