so,therefore,as a result,as的区别及用法.

so是连词,引导一个句子,意为所以……,例It's raining heavily so I have to stay at home= I have to stay at home because It's raining heavily.因为……所以……,但是英语里只能出现because或so之一,不能同时出现；
therefore,表示前面的分析顺承下来的结果,不是直接的因果关系,意为因此,所以,与后面的句子用逗号隔开；
as a result,因此,结果,是个习惯短语,与后面的句子用逗号隔开,例 He fell off the bike and hurt his leg yesterday.As a result,he had to be away from doing sports.他昨天从自行车上摔下来了弄伤了腿,所以,他不得不停止运动；
as,由于,当解释原因的时候,用法相当于because,前面会有结果,as引出的句子解释原因.例 Enjoy the first hour of the day.This is important as it sets the mood for the rest of the day.
享受一天中的第一个小时.这很重要,因为这第一个小时奠定当天其余时间的情绪.