ecause是从属连词,接表示直接原因的从句,一般放在主句的后面,也可放在主句前面,它表示的语气最强,在回答why的问句时,必须用because. 例如:The swimming pool won't be open today because they're making repairs. 游泳池今天不开放,因为他们在修理. Why did you move to France? 你们为什么搬到法国? Because my father found work in Paris. 因为我父亲在巴黎找到了工作. 注意:在英语中用了because后,不可再用so. since 意为"既然",表示对方已知的无需加以说明的原因或事实,语气比because弱,但是比as 强. 例如:Since we have no money,we can't buy that vase. 既然我们没钱,我们就不能买那花瓶. Since everybody is here,let's begin our party. 既然大家都到了,那就开始我们的聚会吧!