aswhich引导非限制定语从句时的区别PPT课件

1、 as, which引导非限制定语从句时的区别目标：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。第1页/共22页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.Itwhich/ as AsIt2.as 具有正如之意，与之搭配的动词一般是固定的，如：a

2、s you know/ as you see/as we planned/as we expected1.非限制性定语从句在句首时只能用as。主语从句 as, which as, which引导非限制定语从句时的区别引导非限制定语从句时的区别第2页/共22页关系代词关系代词as, whichas, which引导非限制定语从句时的区别引导非限制定语从句时的区别1.1.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。第

3、3页/共22页如下列习惯用语中：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。第4页/共22页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

4、which。e.g. She has married again, as was expected. She has married again, which was unexpected.第5页/共22页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

5、happy.第6页/共22页as 引导的非限制性定语从句其他用法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第7页/共22页as 引导的限制性定语从句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 s

6、uch an interesting book _we all like it.This is so interesting a book _we all like it.asthatPlease complete the following sentences and compare:asthat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)suchso第8页/共22页 1. as1. as引导定语从句可放在句首，句中，句末，而引导定语从句可放在句首，句中，句末，而which which 引导定语从句不能放在句首。引导定语从句不能放在句首。 译为正

7、如（常用于固定搭译为正如（常用于固定搭配），配），which which 则没有此义。则没有此义。3.3.与主句语义一致时，用与主句语义一致时，用asas引引导；不一致时，则用导；不一致时，则用whichwhich引导。引导。可以使用被动语态，可以使用被动语态，whichwhich常用于主动语态。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, _ is clear to us.3. Our department will hold t

8、he meeting, _ is known by us.Asas/ whichas第9页/共22页1. Watch the girl and her dog _ are crossing the bridge! A.which B. who C. they D. thatD D第10页/共22页2. He is the only one of the three _ got the new idea. A. who have B. whom have C. who has D. whose had第11页/共22页3. As a teacher, I seldom give my stude

9、nts so difficult a problem _ they can not work out. A. that B. if C. in order that D. as第12页/共22页4. _ we know now, bats(蝙蝠) come out at night. A. As B. Which C. That D. What第13页/共22页5. In the school there are one thousand students, and 45% of _ are girls. A. which B. those C. whom D. them第14页/共22页6.

10、 The reason _ he didnt do his homework was _ he wasnt told to. A. why; that B. which; because C. which; that D. why; because第15页/共22页7.You can hardly imagine the difficulty she had _ enough evidence(证据)to prove the case. A. collected B. to collect C. collecting D. to have collected第16页/共22页8. Can yo

11、u think of a scene _ this word can be used? A. where B. which C. while D. why 第17页/共22页9. He is the same teacher _ spoke at the meeting on the opening ceremony. A. as B. whom C. that D. who第18页/共22页10. This is the point _ they met some difficulty. A. when B. in which C. at which D. that第19页/共22页11. The film brought the hours to me _ I was taken good care of in that faraway village. A. until B. that C. w