（初升高）高一英语衔接班第3讲——名词性从句一、学习目标：掌握名词性从句，即主语从句、宾语从句、表语从句和同位语从句的不同语法特征；掌握名词性从句的用法二、学习要点：what,that所引导的名词性从句的区别；whether,if所引导的名词性从句的区别；it作形式主语和宾语的情况；名词性从句与定语从句和状语从句的区别。三、课程精讲：（一）重点知识讲解1、什么是名词性从句名词：表示人或事物的名称，可作主语、表语、宾语和同位语。名词性从句：功能相当于名词，包括主语从句、表语从句、宾语从句和同位语从句。从属词:thatwhetherif连接代词:whatwhowhomwhich连接副词:whenwherewhyhow辨析：Whatweneediswaterandair.Thatiswhyweputoffthemeeting.Iwonderifyoucandomeafavour.Ihavenoideawhenhewillcomeback.2、从属词的用法that连接作用；无意义if/whether连接作用；意为“是否”Thatthemoontravelsaroundtheearthisknowntoall.Theproblemiswhetherwecanworkitoutintime.Iwonderifyoucandomeafavour.3、连接代词的用法（作主语、宾语、表语、定语）what指代物who/whom指代人which作定语，意为“哪一个”，有选择范围TheSouthChinaisnotwhatitusedtobe.Doyouknowwho/whomtheyarewaitingfor?Iamnotsurewhichfootballteamwillwintonight.4、连接副词的用法（作状语）WhenweshallleaveforCanadahasnotbeendecidedyet.ThatiswhereIwasborn.Iknowwhyheisabsenttoday.（二）解题方法总结1.解题方法：判断从句性质；找出从句缺少的成分；选择连接词Mydecisionis___________allofusaregoingtostartat6tomorrowmorning.Theycouldn’tunderstand___________Irefusedit.Weareworryingabout_____________weshoulddonext.2.that通常不可省略的情况：1)主语从句中，that位于句首时，不可省略；Thatthemoontravelsaroundtheearthisknowntoall.2)当一个句子中有两个或多个宾语从句，第一个that可以省略，其余的that不可省略；Hesaid(that)thetextwasveryimportantandthatweshouldlearnitbyheart.3)由it作形式宾语，that引导的宾语从句中，that不可省略。Ithinkitnecessarythatwetakeplentyofhotwatereveryday.3.只能用whether不能用if的情况1）在表语从句和同位语从句中Thequestioniswhetherwecangoclimbing.2）在介词之后Italldependsonwhetherourparentswillsupportus.3）whetherornot.（不可用ifornot）Thelittleboywonderedwhetherornothecouldgototheseaside.4.当主语从句位于句首时，只能用whether;当it作形式主语时，主语从句放在句末，用whether或if皆可。Whetherthemeetingwillbeheldhasnotdecidedyet.练习：用whether或if填空_________________wewillgoswimmingtomorrowdependsontheweather.Iamnotsure_________________hewillcomeornot.Itisdoubtful____________________theworkcanbecompleted.5.连词that引导的同位语从句与关系代词that引导的定语从句的区别同位语从句：位于抽象名词后，起补充说明作用，只起连接作用，不充当任何成分。定语从句：起连接和替代作用。Thenewsthatourfootballteamwonthematchwasexciting.Thenewsthatweheardontheradiowasnotsure.练习：辨析Thereisafeelinginmethatwe’llneverknowthefact.WhatisthefirstAmericanfilmthatyouhaveseen?6.定语从句与状语从句的区别——句子结构不同Heleftthekeywherehehadbeenanhourbefore.（状语从句）Helefttheplacewherehehadlivedformanyyears.（定语从句）Heissuchagoodteacherasallofusloveandrespect.（定语从句）Heissuchagoodteacherthatwealllikehim.（状语从句）（三）即学即练1.Acomputercanonlydo_________________youhaveinstructedittodo.2.Ireadaboutitinsomebookorother,doesitmatter___________itwas?3.Itiswellunderstood_______________controlstheweather.4.Hewroteanarticleon_______________theteamhadfailed.5.Danbyleftwordwithmysecretary______________hewouldcallagainintheafternoon.（四）高考链接1.Iwanttoknow_________thethiefwascaughtonthespot.A.whichB.thatC.whatD.whether2...
