关系代词as的用法.doc

《关系代词as的用法.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、关系代词as的用法TeachingAimsandDemands1.Getthestudentstoknowtherelativepron“as”2.Learnthedifferencebetween“as”and“which”3.Revisewhatwehavelearnedinthelastsixlessons.Theimportantpoints1.Thefunctionsof“as”usedintheattributiveclause,andthelanguagesituationsaboutit.2.ThedifferencebetweenasandwhichThediff

2、icultpointsThedifferencebetweenasandwhich,especiallywhentheyleadtheun-restrictiveattributiveclause.TeachingMethodsCommunicationwayofteaching,discussionandgroupwork.关系代词as的用法1）关系代词as,在从句中作主语、宾语和表语。2）先行词被such、asso和thesame修饰，如句型asmany（much）as,或者本身就是suchthesame时，从句都用as引导。Suchbooksasyouboughtareuse

3、ful.Theschoolisjustthesameasitwas10yearsagoIreadasmanypagesasarerequired.比较下列句子当先行词受thesame修饰时，偶尔也用that引导定语从句，但与as引导的定语从句意思有区别。ThisisthesamepenasIlost.ThisisthesamepenthatIlost.Thisissuchaninterestingbook_as___wealllike.Thisissuchaninterestingbook_that__wealllikeit.11as与which引导的定语从句1)在非限定定语从句中

4、，which的先行词可以是名词，as不可Themeeting,whichwasheldintheparkwasasuccess.2）关系代词as和which都能引导非限制性定语从句代表整个句子内容，as引导的定语从句可位于句首或句末；which引导的定语从句却不能位于句首。如：Aswehaveseen,oceanscovermorethan70%oftheearth.Asweallknow,theearthisround.3）as代表前面主句意思时，有“正如…”之意，而which没有此意思，从句中的动词常是expect,know,see,think,want,suppose等。He

5、wonthematch,aswehadexpectedAsweallknow,hisparentswerekilledinthewar.Thepolicewerelookingforhim,ashethought.6）当从句和主句语义一致时，用as，反之则用which。Shehasmarriedagain,aswasexpected.Shehasmarriedagain,whichwasunexpected.7）as在从句中作主语时，后面常接行为动词的被动语态，如beknown，besaid，bereported等，如从句中行为动词是主动语态，一般要用which作主语。e.g.Sh

6、ehasbeenlateagain,aswasexpected.Tomhasmadegreatprogress,whichmadeushappy.8).as做主语时，其后必跟系动词，而which无此限制Themeetingwasputoff,aswaswhatwewanted.Hewasmurdered,asseemedtrue.9）在意义上，as引导的定语从句和主句的关系一般为一致关系，常译为“正如……”，“就像……”，而which引导的定语从句和主句的关系是因果关系，或which引导的定语从句对主句的评论。因此，在意思通顺的情况下，which可代替as，而as许多时候不能代替w

7、hich。