because 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. for 是并列连词,用来附带解释说明前一分句的原因或理由,for引导的并列句,一般放在所要说明的句子的后面. 例如:I went to see him,for I had something to tell him. 我去见他,因为我有事要告诉他.