Unit 5 Learning About Language示范课教学课件【英语选择性必修第二册人教版】

Unit5WorkingthelandLearningaboutlanguage人教版高中英语选择性必修第一册Discoverusefulstructures在复合句中充当主语成分的从句叫做主语从句。DiscoverusefulstructuresWhatYuanLongpingreallycaredaboutwasnotmoneyorcelebrity.ThatYuanLongpinghadrealisedhisdreamofseawaterricesurprisedthewholeworld.It’ssurprisedthewholeworldthatYuanLongpinghadrealisedhisdreamofdevelopingseawaterrice.Discoverusefulstructures主语从句，即在复合句中充当主语成分的句子。Thathefinishedwritingthecompositioninsuchashorttimesurprisedusall.他在很短的时间内写完作文让我们都很惊讶。此复合句主要描述的是某事让我们惊讶，某事就是该复合句的主语，因此“Thathefinishedwritingthecompositioninsuchashorttime”便是该复合句的主语从句。引导主语从句的连词主要有：从属连词：thatwhether连接代词：whowhoeverwhomwhosewhatwhateverwhichwhichever连接副词：whenwherehowwhywheneverwhereverhowever引导词+主语+动词=主语从句试翻译:我们明天是否会去郊游仍旧未知。tomorrowremainsunknown.WhetherwewillgoforanoutingDiscoverusefulstructures主语从句的时态不受主句时态的影响和限制，主语从句常作单数。（1）Whowillbeourmonitorhasn’tbeendecidedyet.谁当我们的班长尚未决定。（2）Whomwemuststudyforisaquestionofgreatimportance.“我们为谁而学习”是个很重要的问题。（3）Whatcausedtheaccidentremainsunknown.事故的起因是未知的。（4）Whateveryoudidisright.你做的任何事都是正确的。（5）Whomthewatchbelongstoisunknown.手表的归属是未知的。（6）Whatweneedistime.我们需要的是时间。（7）Whatweneedaregooddoctors.我们需要的是好的医生。Discoverusefulstructures归纳总结：★主语从句必须有引导词；主语从句用陈述句语气。★连词位于句首不能省略★主语从句大多数情况下视为第三人称单数，但也有例外。★主语从句引导词的选择主要是根据从句的结构和意义来选择。如果从句的意义和结构完整，则用that。如果从句的意义和结构不完整，则根据从句的意义和结构选择相应的引导词。练一练：用适当的连词填空_____________

bagitiscannotbetold._____________Indianeedsisalawtomakelandownershipfairer.Itisnotyetdecided_____________cashcropwillbeproducednextyear.________________hesaidwasright.WhoseWhatWhat/Whateverwhich/whatDiscoverusefulstructures比较that/what1._________hewantsisabook.主语从句

2._________hewantstogothereisobvious.主语从句

3._________happenedisnotclear.主语从句4.ThisisthebestTV________ismadeinChina.定语从句5.Thefirstmuseum________hevisitedinChinawastheHistoryMuseum.定语从句that和what的选用：that和what都可引导主语从句。但是，what除起连接作用外，还在主语从句中充当成分，可做从句的主语、宾语、或表语，相当于thething(s)that；而that在主语从句中不充当任何成分，只起连接作用。WhatThatWhatthatthatDiscoverusefulstructures为了使句子保持平衡，常用it来代替主语从句，而把主语从句放到后面，尤其是连词that引导的主语从句常用于此种句式中。常用句型如下：It+be+名词+that从句It+be+形容词+that从句It+be+动词的过去分词+that从句It+不及物动词+that从句Discoverusefulstructures1.It’slikely/possible/important/necessary/clearthat…很可能/重要的是……

/必要的是……/很清楚……2.It’sknown/reported/thought/saidthat…据说/据报道……3.Itseems/appears/happensthat…显然、明显、碰巧……4.It’sbeenannounced/declaredthat…已经通知/宣布……5.It’snowonderthat…难怪/无疑……6.It’sapity/afact/acommonknowledge（众所周知）/acommonsaying（俗话说）that…Discoverusefulstructures翻译练习1.他多长时间去看望奶奶取决于他能抽出多少时间。2.那一年有多少人死于饥饿永远也不为人知了。3.所有人都知道火药最初是由中国人发明的。4.造成事故的原因仍旧是个秘密。

Howoftenhe’llgotoseehisgrandmotherdependsonthetimehecanspare.Howmanypeoplediedfromstarvationthatyearwillneverbeknown.ItisknowntoallthatthegunpowderwasfirstinventedbytheChinese.Itisstillamysterywhatcausedtheaccident.Discoverusefulstructures下列各句均有一处错误，请改正并分析原因。1.Lighttravelsfasterthansoundiscommonknowledge.改：在Light前加That。that虽无词义但引导主语从句位于句首时不能省略。2.Ifshe’scomingornotdoesn’tmattermuch.改：将If变为Whether。if,whether都可表示“是否”,但if不能引导位于主句之前的主语从句，它可以引导位于主句之后带有形式主语it的主语从句。3.Thattheprofessorsaidisofgreatimportance.改：将That改为What。that引导主语从句时无词义，只起一个连接的作用。Whattheprofessorsaid表示“教授所说的”，said后面还需要一个宾语，就只能用what。Discoverusefulstructures下列各句均有一处错误，请改正并分析原因。4.Wherewillthetreesbeplantedhasnotbeendecided.改：将will置于trees之后。主语从句要用陈述句语序。5.Nomatterwhobreakstherulewillbepunished.改：将Nomatterwho变为Whoever。引导让步状语从句时二者可互换，但引导名词性从句时只能用whoever。6.Whenandwherethemeetingwillbeheldstillremainaquestion.改：将remain变为remains。主语从句表示单一概念时，谓语要用单数形式。DiscoverusefulstructuresDiscoverusefulstructuresTranslatethecompletedsentencesintoChinese.1.这些小麦农场主什么时候加入这个试验仍然是一个悬而未决的问题。2.我们如何才能找到一个适合的解决办法来生产足够的粮食同时保持环境安全是我们要研究的一个重要主题。3.令人多人担忧的是这些化学药品甚至能导致癌症。4.这些蔬菜甚至能通过这种新技术无土种植，令我们所有人都很吃惊。5.生活方式慢节奏而且健康是很多人更愿意住在乡下而不是城里的原因。Discoverusefulstructures12431.thefactthatthevegetableslookbeautifulontheoutside2.thethingthatsheisunhappyabout3.thewaythattheyaregoingtospendtheirretirement4.thequestionwhethertheycanliveahealthylifeDiscoverusefulstructuresWhatIhaveforgottenisItWhosehasnotDiscoverusefulstructuresCombineeachpairofsentencesusingthewordinbrackets.1.Canwecontrolpestswithoutcausinganyilleffects?Thisstillremainsaquestion.(Whether)2.Agricultureisthefoundationofourcountry.Thisiswellknown.(It)3.Someless-developedcountriesaresufferingfoodshortage.Itisaseriousproblemintheworld.(That)Whetherwecancontrolpestswithoutcausinganyilleffectsstillremainsaquestion.It’swellknownthatagricultureisthefoundationofourcountry.Thatsomeless-developedcountriesaresufferingfoodshortageisaseriousproblemintheworld.Discoverusefulstructures4.SomeherdsmeninInnerMongoliafixelectronicsensorstotheircattletomonitortheirmovements.Itistruethattheyaredoingthis.(It)ItistruethatsomeherdsmeninInnerMongoliaarefixingelectronicsensorstotheircattletomonitortheirmovements.DiscoverusefulstructuresMakesentencesusingsubjectclauseswiththehelpoftheclues.1.hesaid/reasonable2.shewillaccepttheinvitation/notclearyet3.theanimalsaremovingto/notexactlyknown4.youhaverecoveredfromyourillness/agratrelieftous.5.hehasbecomedistantrecently/myconcernWhathesaidisreasonable.Wheretheanimalsaremovinghasnotbeenexactlyknown.Thatyouhaverecoveredfromyourillnessisagreatrelieftous.Whethershewillaccepttheinvitationisnotclearyet.It’smyconcernwhyhehasbecomedistantrecently.DiscoverusefulstructuresRewritethesentencesusingsubjectclauses.1.Wewantedtoknowwherehehadlostthelaptop.2.Thewayinwhichhedidtheexperiemntwaspuzzlingtootherpeople.3.Dotheyusetoomanychemicalpesticides