as, which引导非限制定语从句时的区别.pptVIP

as, which引导非限制定语从句时的区别 3. as/which引导非限制性定语从句的区别 Go on Please! 3. 与主句语义是否一致 当从句和主句语义一致时，用as，反之则用which。 e.g. She has married again, as was expected. She has married again, which was unexpected. Go on please! 4. 常用语态不同 as在从句中作主语时，后面常接行为动词的被动语态，如be known，be said，be reported等，如从句中行为动词是主动语态，一般要用which 作主语。 e.g. She has been late again, as was expected. Tom has made great progress, which made us happy. * 目标：1.理解明白as, which引导非限制定语从句时的区别。 2.理解as和the same, such, so一起使用的的用法，并会应用。 The earth is round._____ is known to all. The earth is round, _____ is clear to us. _____ is known to all, the earth is round ______ is known to all that the earth is round. It which/ as As It 2.as 具有正如之意，与之搭配的动词一般是固定的，如： as you know/ as you see/as we planned/ as we expected 1.非限制性定语从句在句首时只能用as。 主语从句 as, which引导非限制定语从句时的区别 关系代词as, which引导非限制定语从句时的区别 1.位置不同 as和which都可指主句的整个意思，而不是主句中的某一个词。两者均可引导非限制性定语从句，有时可以互换。 as引导的非限制性定语从句，可在句首、句中、句末；而which引导的非限制性定语从句不能位于主首，可在句中、句末。。 如下列习惯用语中： as anybody can see 正如人人都能看到的那样 as is well known = as is known to all 众所周知 as we had expected 正如我们所预料的那样 as often happens 正如经常发生的那样 as has been said before 如上所述 as is mentioned above 正如上面提到的 2.含义不同 as 具有正如、好像之意，而which没有此意义。 且与as搭配的动词一般是固定的。 as 引导的非限制性定语从句其他用法(1) This is the same pen as I lost. This is the same pen that I lost. Please compare: 这本书和我丢的那本一模一样。 这本书就是我丢的那本。 the same as 引导的限制性定语从句其他用法(2) This is such an interesting book ____ we all like. This is so interesting a book _____ we all like. This is such an interesting book ____we all like it. This is so interesting a book ____we all like it. as that Please complete the following sentences and compare: as that 这是大家都喜欢的如此有趣的一本书。(定语从句) 这本书如此有趣，大家都喜欢。(结果状语从句) such so 1. as引导定语从句可放在句首，句中，句末，而which 引导定语从句不能放在句首。 2.as译为正如（常用于固定搭配），which 则没有此义。3.与主句语义一致时，用as引导；不一致时，则用which引导。4.as可以使用被动语态，which常用于主动语态。 1. ____ everyone knows, it is necessary to build a hospital. 2. It is necessary to build a hospital, ______