模块ⅣUnit2语法.ppt

《模块ⅣUnit2语法.ppt》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、名词性从句一、名词性从句的连接词连接词及从句类型典句例示用法点击连接词that，whether，if；that在句中只起连接作用，不作成分，有时可省略；whether和if不充当成分，意为“是否”。主语从句Thathewillcomeiscertain.(that不可省略)Whethershe'scomingornotdoesn'tmatter.(不能用if)1.句首不能省略that。2.位于句首的主语从句一般用whether。宾语从句Ibelieve(that)theywillfinishthe

2、workintime.Iwentinandaskedif/whethertherewasaletterforme.1.that可以省略。2.if与whether可互换。3.作介词宾语时一般用whether。连接词及从句类型典句例示用法点击连接词that，whether，if；that在句中只起连接作用，不作成分，有时可省略；whether和if不充当成分，意为“是否”。表语从句ThefactisthatIhaveneverbeenthere.Thequestioniswhetheritiswort

3、hdoing.1.that一般不省略。2.用whether而不用if。同位语从句EveryoneknowsthefactthatFishingIslandbelongstoChina.Thequestionwhethertherailwayisworthbuildinghasnotbeensolved.1.that不能省略。2.用whether而不用if。连接词及从句类型典句例示用法点击连接代词who，whom，whose，which，what和连接副词where,when，why，how有各自的

4、意义，连接代词在从句中作主语、表语、宾语或定语。连接副词在从句中作状语。主语从句Whathesaidisveryimportanttous.Whichsidewillwinisnotclear.Whyhecamelatetodayhasbeenclearnow.1.用陈述语序。2.what从句相当于“先行词＋that引导的定语从句”。宾语从句Payattentiontowhattheteachersaysinclass.Idon'tknowwherewearegoingtohavethemeeti

5、ng.介词后的宾语从句用what而不用which引导连接词及从句类型典句例示用法点击连接代词who，whom，whose，which，what和连接副词where,when，why，how有各自的意义，连接代词在从句中作主语、表语、宾语或定语。连接副词在从句中作状语。表语从句Thatiswhatwe'vebeenexpecting.Thatiswhereheusedtowork.用陈述语序。同位语从句Ihavenoideawhohasstolenthemoney.Ihavenoideahowhew

6、illraisesomuchmoney.Thenewscamethatwewouldhavethreedaysoff.1.必须用陈述语序。2.同位语从句的连接词不能省略。二、名词性从句注意事项从句典句例示用法点击主语从句Itiscertainthatmostofthefarmershavebroughtinmoremoneythanbefore.It'snowonderthatyou'veachievedsomuchsuccess.Itissaidthattheprofessorhasalread

7、ysucceededincarryingouttheexperiment.IthappenedtomethatIhadbeenawaywhenhecalled.用it作形式主语的常用句型有：1.It＋系动词＋形容词(necessary/right/likely/unlikely/wrong/important/certain等)＋that从句。2.It＋be＋名词(短语)(apity/ashame/nowonder等)＋that从句。3.It＋be＋过去分词(said/told/reported/

8、decided等)＋that从句。4.It＋特殊动词(seem，appear，happen，matter)＋that从句。从句典句例示用法点击主语从句Itisnecessaryandimportantthatone(should)mastertheskillofoperatingcomputers.Itwassuggestedthatthey(should)startatonce.在Itisnecessary/important/suggested/advised/ordered＋