as/which 引导定语从句异同1、as/which 引导定语从句异同as/ which 都能引导限制性或非限制性的定语从句
(1)在引导限制性定语从句时;①which 从句修饰的先行词是名词(词组),which 可与 that 换用,作宾语时可省去
如:Then grow some tomatoes in one box which has plant food in the soil and some in another box which doesn’t
But the studios(which)he started are still busy today, producing more and more interesting films
②as 从句的先行词是 the same/such 或被 the same/such 修饰;as 可作主、宾、表语,一律不可省略
如:Many of the sports were the same as they are now
(as 作表语)He uses the same map as I (use)
他和我用的是同一份地图
(as 作宾语)Such as beautiful park as is being built was designed by two young engineers
正在建造的如此漂亮的公园是由两个年轻的工程师设计的
(as 作主语)The printed newspaper was not such as the chief editor had expected
印好的报纸并非如主编原来所期望的那样
(as 作宾语)(2)在引导非限制性定语从句时,as,which 都可作主、宾、表语,都不可省去
①which 从句补充说明先行词的用途、性质、状态、特征等
如:At present,t