for、since、as、because作因为的区别

Question

for 、since 、as 、because 作因为的区别

Answer 1

since, as一般放在主句的前面,since表示“既然”,表示人们已知的事实.全句的重点在主句的内容上.如：Since he can't answer the question, you'd better ask someone else. as表示“由于”语气较弱,全句的重点在主句的内容上.如：As i haven't seen the film, I can't tell you what I think of it. because语气最强,表示“因为”,可以放在主句在前面或后面,通常表示说话人认为这种理由或原因是听的人所不知道的,全句的重点在原因上.如：He didn't attend themeeting because he had toomuch work to do. for一般放在主句的后面,用来对主句补充说明理由或推断原因,有时候可以和because交替使用.它与前一句不存在因果关系.如：The ground is wet, for it rained last night.