2、 这是因为你不能欣赏音乐。ItisbecauseheishonestthatIlikehim. 是因为他诚实我才喜欢他。注意：because 和so 不可同时出现在一个句子里。because of也表示原因，但它后面不接从句,只能接名词,代词或动名词。① I do it because I like it. = I like it so I do it. ② We went by bus because it was cheaper. = It was cheaper so we went by bus. ③ He
3、 can’t go to school because of his illness. (2) 关于 since 与 as： 两者所表示的原因都是人们已知的，即对已知事实提供理由，而不是表示直接原因。since 比 as 语气稍强，且比 as 略为正式，它们引导的从句通常放在主句之前，有时也放在主句之后：(since通常被翻译成“既然”=now that.侧重主句。)(as通常被翻译成“由于”。主从并重，从句说明原因，主句说明结果。)Asyouweren’tthere,Ileftamessage. 由于你不在那儿，
4、我留了个口信。Asyouaretired,youhadbetterrest.Sinceyouarewrong,youshouldapologize. 你既然错了，就应该道歉。Now(that)youaregrownup,youshouldnotrelyonyourparents.练习：（1）Hedidn'tgotoworktheheavyrain. A.becauseB.becauseofC.soD.since（2）He took off his coat _______ he felt hot. A. b
5、ecause B. as C. if D. since （3） ______ the day went on, the weather got worse. A. With B. Since C. While D. As（4）WangXiaodidn’tgotoschool.Shehadafever.（合并为一个复合句）WangXiaodidn’tgotoschool_________shehadafever.答案：B,A,D,because
