精选优质文档-倾情为你奉上表示原因的连词Becausesince as forBecause 语气最强，用来回答why的问题。位置比较灵活。Why do you go to Canada?Because I will go study abroad.Since 表示对方已知的原因或事实。Since everybody is here, lets begin our party.Since you are here, I will begin my class.Since we do not have enough money, we can not afford the house.As 表示比较明显的原因，常放于句首。As the weather is getting hotter, people will turn on their air-conditioners.As you are growing older, you should be more responsible.For表示补充的解释说明
