Unit+5+Grammar-名词性从句课件 【备课精讲精研】 人教版高中英语选择性必修第一册

NounClause从句名词性从句形容词性从句:定语从句:状语从句主语从句宾语从句表语从句同位语从句副词性从句及物动词不及物动词+介词

名词WhenweshallholdthemeetingdependsonwhetherJohncanreturntomorrow.

系动词TheproblemiswhenJohnwillcomeback.Weexpressedourhopethatwecouldvisitthecountryagain.主语从句宾语从句表语从句同位语从句关联词or引导词的分类1.

that,whether,if2.who(m),who(m)ever,whose,which,whichever,what,whatever,3.when,whenever,where,how,why

连接代词连接副词掌握名词性从句的关键从属连词名词性从句的引导词：that(无意义)if、whether(不充当句子成分，只起连接作用,“是否”)asif,asthough、because(多用于表语从句)who/whoever、what/whatever、which/whichever、whom、whose作主/宾/表/定when/whenever、where/wherever、how/however、why.作状语从属连词连接代词连接副词1.If不能放在句首引导主语从句，这时要用whether.如果转为it作形式主语，那么两者可以互换。2.如果与“ornot”连用表示“是否”，也只用whether.注意：3.主语是从句时，谓语动词一般使用第三人称单数。注意：

在主语从句、表语从句、同位语从句中that不能省略。宾语从句中的连接词that在以下情况下不能省略：（1）当that引导两个或多个并列作宾语时，只有第一个that能省；

(2)如果从句中还有从句，that不能省名词性从句that的省略：提示：介词后一般不跟that引导的从句

。但inthat，exceptthat除外

Mendiffersfrombrutesinthattheycanthinkandspeak.IknownothingabouthimexceptthatheisfromShanghai.主语从句在句子里担当主语的从句叫做主语从句。1)Thatshelefthimhurthimsomuch.2)Whetheritwaspossibletodevelopahybridofself-pollinatingplantssuchasricewasamatterofgreatdebate.3)Whatconcernedhimmostwasthatfarmersoftenhadpoorharvestsandsometimes主语从句常见句式主语从句常位于句首。有时用it作形式主语，而将从句放在句末。Thatsheisthebeststudentintheclassisobvious.=Itisobviousthatsheisthebeststudentintheclass.主语从句常见句式用it作形式主语的常见结构：①Itbe+形容词+that…常用于该句型的形容词有

clear,obvious,natural,likely,possible,necessaryetc.______________(有可能)thedriverwon’tpickyouupattheairport.Itislikelythat主语从句常见句式用it作形式主语的常见结构：②Itbe+名词（词组）+that…常用于该句型的名词（词组）有apity,ashame,goodnews,afact,anhonor,awonder,nowonder

___________(是个遗憾)yourparentsdidn’tpermityoutogowithus.主语从句常见句式用it作形式主语的常见结构：③Itbe+过去分词+that…常用于该句型的过去分词有said,believed,reported,thought,expected,decided,announced,suggested,hopedetc.Itissuggestedthatthework______________donewithgreatcare.（should）beTip1当过去分词表示建议，要求，命令等词时，名词性从句应该用虚拟语气，即(should)do主语从句常见句式用it作形式主语的常见结构：④It+不及物动词（短语）+that…常用于该句型的不及物动词（短语）有seem,turnout,happen,appear,occur_________________（碰巧）hewasoutthatday.Ithappenedthat宾语从句在句子里担当宾语的从句叫做宾语从句。宾语从句常位于及物动词、动词短语、介词、表语形容词之后。Weweresurprisedthathelostthegame.此类表语形容词有:afraid、pleased、happysatisfiedanxioussureetc1.whether/if引导宾语从句时，不能省略。Idon’tknow__________________.我不知道是否能够帮助你。2.Whether能引导介词后的宾语从句，if不能。Ihaven’tsettledthequestionof_____I’llgobackhome.注意：3.1坚持(insist)2命令(command,order)

3建议(suggest,advice,propose)

4要求(require,request,demand,desire)后的宾从用虚拟语气,（should）do注意：注意：只有当suggest表示“建议”、insist表示“坚决要求”时，其后宾语从句才使用虚拟语气。如果suggest表示“暗示，表明”、insist表示“坚持说、坚持认为”，其后宾语从句则使用陈述语气（该用什么时态就用什么时态）注意：Thelookonhisfacesuggestedthathewasquitesatisfied.Heinsistedthathehadnotstolenthecarandinsistedthathe(should)besetfreeatonce.表明，暗示坚持说坚决要求4.注意：5.wish后的宾从也要用虚拟语气

注意：5.wish后的宾从也要用虚拟语气我希望我是个男孩。

注意：IwishIwereaboy.宾语从句用it做形式宾语Wehavemade

that

aforeignlanguageisusefulweaponinthestruggleoflifeclear.Wehavemadeitclearthataforeignlanguageisusefulweaponinthestruggleoflife.consider、find、think、feel、make、take等动词常带宾语补足语,这时要用形式宾语it,宾语从句放到宾补之后。宾语从句用it做形式宾语Wehavemade

that

aforeignlanguageisusefulweaponinthestruggleoflifeclear.Wehavemadeitclearthataforeignlanguageisusefulweaponinthestruggleoflife.consider、find、think、feel、make、take等动词常带宾语补足语,这时要用形式宾语it,宾语从句放到宾补之后。表语从句在句子里担当表语的从句叫做表语从句，表语从句常位于系动词后面。ThequestioniswhetherwecanfinishtheexperimentbyFriday.表语从句不用if其他连接词引导的表语从句Itseemedasifallthetheorieswereuseful.Fromspace,theearthlooksblue.Thisisbecauseabout70percentofitssurfaceiscoveredbywater.

Thatwashow

theywonthematch.Thisiswhyshegotupsoearlythismorning.其他连接词引导的表语从句◆Thisisbecause…这是因为…◆Thisiswhy

…这就是…的原因◆Thisishow….这就是…的方法CombineeachpairofsentencesHewasabsentfromthemeeting.That’sthefact.Isheastudent?That’smyquestion.Thefactisthathewasabsentfromthemeeting.Myquestioniswhetherheisastudent.

从句一律陈述语序Combineeachpairofsentences3.WhenwillweleavefortheIsland?That’swhatIwanttoknow.4.Whommustoureducationserve?That’sthemostimportant.WhatIwanttoknowiswhenwe’llleavefortheIsland.Themostimportantiswhomoureducationmustserve.同位语从句在句子里担当同位语的从句叫做同位语从句，说明该名词的具体内容。Ihavenoidea

whetherheagreestotheplanornot.

Imadeapromisetomyselfthatthisyear,myfirstyearinhighschool,wouldbedifferent.分隔式同位语从句同位语从句同位语从句常修饰以下词:fact,news,hope,opinion,order,question,problem,belief,truth,theory,decision,discovery,conclusion,promise,rumor,fear,thought,suggestion,plan,idea,information......Combineeachpairofsentences1.Wewereexcitedatthenews.Ourfootballteamhadwonathirdmatch.

Wewereexcitedatthenewsthatourfootballteamhadwonathirdmatch.2.Theyhavemadeanewplan.Anotherexperimentbuildingwillbeputupbesidethelibrary.Theyhavemadeanewplanthatanotherexperimentbuildingwillbeputupbesidethelibrary.Combineeachpairofsentences3.Theyhadthequestion.Couldhepassthefinalexam?Theyhadthequestionwhetherhecouldpassthefinalexam.4.Whodidthedamagedcomputerbelongto?Noonehadanyidea.Noonehadanyideawhothedamagedcomputerbelongedto.使用名词性从句的注意事项

：Whetherhewillhelpustackletheproblemisdoubtfu