Unit5Workingtheland（原卷版）-2021学年高二英语上册链接教材精准变式练（人教版2019）-1

重点语法Unit5（原卷版）20212022学年高二英语上册链接教材精准变式练（人教版2019）教材教材重点语法知识链接及典例解读主语从句体会下面教材中句子的语法特征并说明画线词在句中所作的成分However,whatconcernedhimmostwasthatfarmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.Howthiscouldbedonewasachallengingquestionatthetime.3.Today,itisestimatedthatabout60percentofdomesticriceconsumptioninChinaisprisedofcropsgeneratedfromYuan'shybridstrains.4.WhatYuanLongpingreallycaredaboutwasnotmoneyorcelerity.一、概念在句中充当主语的从句称为主语从句。英语中带有主语从句的句型可分为两大类：一是直接将主语从句放在主语的位置上；二是用it作形式主语，将真正的主语从句后移，放在其他成分之后。从句作主语时，谓语动词一般用单数形式(what从句作主语时，如果含有复数概念时，谓语动词可用复数形式)。Thatmathematicsisthebaseofotherscienceisknowntoallofus.Itisknowntoallofusthatmathematicsisthebaseofotherscience.众所周知数学是其他科学的基础。二、类型1．that，whether引导的主语从句：连词只起连接作用，在从句中不充当句子成分，可用it作形式主语代替。Thathewonthegamemadeatremendousstirinourcountry.他赢得比赛一事在我国引起了巨大轰动。Whetheritwilldousharmorgoodremainstobeseen.此事对我们有害还是有利还有待于看一看。Itdependsonhowhardheworkswhetheronecansucceed.一个人能否成功取决于他工作努力的程度。[温馨提示]if有时也可引导主语从句，但只能用it作形式主语，if从句后置。Itisdoubtfuliftheywille.他们是否会来值得怀疑。2．连接代词what(ever)，which(ever)，who(ever)，whom(ever)，whose引导的主语从句：这类连词除起连接作用外，还在从句中充当一定的句子成分，可作主语、宾语、表语或定语。Whatshedidafterthatisnotcleartous.那之后她做了什么我们不清楚。Whateverisworthdoingatallisworthdoingwell.凡是值得做的事都值得好好地做。Whichofallthosewaysisthebestisuncertain.所有那些方法中哪一个最好还不能肯定。Whomwemustserveisaquestionofvitalimportance.我们应当为谁服务是一个极为重要的问题。Whosecarelessnessspoilttheworkmustbemadeclear.必须查清是谁的粗心破坏了工作。Itisstillopentoquestionwhoistoheadthegroup.谁领导这个小组还未决定。3．连接副词when，where，how，why引导的主语从句：这类连词在从句中常作状语，也可用it作形式主语代替。Whenandwherethemeetingwilltakeplacehasnotbeendecidedyet.开会的时间和地点还未决定。Whyhediditwillremainapuzzleforever.他做此事的原因将永远是个谜。Itisnotclearhowaccuratetheresultsare.这些结果的精确程度还不清楚。三、it作形式主语的主语从句1．Itis/was＋形容词＋主语从句Itisquiteclearthatthecrimehasbeendonedeliberately.十分明显这是故意犯罪。Itwasclearenoughwhatshemeant.她的意思已经够清楚了。Itisuncertainwhyhedeniedthecharge.不确定他为什么否认了指控。2．Itis/was＋名词＋主语从句Itisagoodthingthatwedomorningexerciseseveryday.我们每天做早操是件有益的事。Itisapletemysterywhatcausedtheaccident.是什么引起了这场事故完全是个谜。It’snotmybusinesshowshechoosestolive.她选择什么样的生活不关我的事。3．Itis/was＋过去分词＋主语从句Itisrequiredthatthemachineshouldbemaintainedatregularintervals.机器需要定期维修。Itisnotyetknownwhethertheywillsendadelegationtotheconference，butwehopetheywill.还不了解他们是否会派代表团来参加会议，但是我们希望他们派团来。Hasitbeendecidedwherewearetoholdthemeeting?决定了我们开会的地点了吗？4．It＋不及物动词＋主语从句IthappenedthatIwasn’ttherethatday.碰巧那天我不在那里。Itdoesn’tmatterwhatshelookslike.她的外表怎么样并不重要。5．Itis/was＋介词短语＋主语从句Itisofgreatimportancewhetherwecanimproveourscientificresearchornot.我们能否提高我们的科学研究是极为重要的。[温馨提示]在Itisimportant/necessary/natural/essential/impossible...＋that从句和Itisdemanded/suggested/required/requested/proposed...＋that从句中，从句的谓语动词用虚拟语气，即(should)do形式。Itisnecessarythatascientificworker(should)knowforeignlanguages.科学工作者必须精通外语。Itisdesiredthatremotecontrol(should)beintroducedinthissystem.有人想要把遥控装置引进该系统。四、主语从句中应注意的问题1．从句要用陈述语序Whatwewilldonextshouldbedecided.应该决定一下我们下一步该做什么。2．主谓一致(1)从句作主语时，主句的谓语一般用单数形式。Wherehewillgetajobaftergraduationhaspuzzledhimmuch.毕业后到哪儿找份工作使他很困惑。[温馨提示]what引导主语从句时，有时主句的谓语动词应与主句中作表语的名词保持一致。Whattheschoolneedsmostarebooks.这所学校最需要的是书。(2)如果由and连接两个或两个以上的主语从句作主语时，谓语动词用复数；由两个或多个连接词引导一个主语从句时，谓语动词用单数。Whentheywillstartandwheretheywillgohavenotbeendecidedyet.他们将在什么时候动身以及要去哪里还没定下来。Whenandwherethemoviewillbeshownisnotclear.这部影片何时何地上映还不清楚。一．用适当的词填空（2020·上海浦东新区检测）__________neveroccurredtohimthattheeasierthequestionswere,themorecarefulheshouldbe.2.Itissaid______heisworkingonabookaboutspaceexploration.But_____itwilleoutisupintheair.3.Don'tworry.______hewillofferushelpdoesn'tmatteralot.4._________,asamatteroffact,hasbeenputforwardattheconferenceisthatthegovernmentshouldencouragethegraduatestosetuptheirownbusiness.5.______________hewillgotoworkinamountainvillagesurprisesallofus6._________willbemadecaptainofourteamisstillunknown,butonethingiscertain:_____isputintothispositionistoleadusoutofthepresentdifficulty.7.________youcanmakeyourdreametruedependsonhardworkratherthanluck.8.______fashiondiffersfromcountrytocountrywillreflecttheculturaldifferencestosomeextent.9.Itisafact___________Englishhasbeenacceptedasaninternationallanguage.10.________iswillingtovolunteerintheBeijing2022OlympicWinterGamesisweletojoinus.11._________trulychangestheworldisthewayyoulookatyourself.12.___________isprovedisthatanimalsandinsectshavetheirownlanguages.13.（2020·天津静海一中期末）____________I'mconcernedaboutmostis___________wecancollectahugeamountofmoneyinsuchashorttime.14.______thechildformedthehabitofplayingputergamesmadehismotherangry.15.（天津一中检测）Webelieve_______youhavebeendevotedtoisnaturallyofgreatnecessity.二.单句语法填空1．______faultitisisquiteclearnow.2．_______takesinterestinthepapercanaskforacopy.3．Whenshewillebackschool_______(depend)onhermother.4．Itisuncertain______hisfamilywasoriginallyBritainorAmerican.5．Whattheywantatpresent_____(be)basicskillsforsurvivalinthewild.6．_____isdesirablethatweshouldreadtheinstructionsoftheinstrumentsinadvance.7．Itishardtoimagine_____lifewaslikeforheratthattime.8．It’simportantthatchildren_______(have)theirownhobbiesandinterests.9．Itisrequestedthatallthemembers_____(be)presentatthemeetingtomorrow.10_____theorymustgohandinhandwithpracticeisaprincipleweshouldalwayskeepinmind.三.完成句子11.他似乎要到10点钟之后才能回来。12.有人建议我们应该立刻采取措施。13.我们今天所做的事在过去是不可能的。14.空气中有多少水蒸气取决于空气的温度。15.尊重所有少数民族的风俗习惯是很自然的。四.句型转换1．HehappenedtobeoutofNewYorkatthetime.→__________________hewasoutofNewYorkatthetime.2．Itchancedthatshemethimintheparkthreedaysago.→_______________________________________threedaysago.3．Thisbookissaidtohavebeentranslatedintomanylanguages.→__________________thisbookhasbeentranslatedintomanylanguages.4．Youarelikelytosufferfrombadhealthifyoukeepsmoking.→_______________________youwillsufferfrombadhealthifyoukeepsmoking.5．Thatwaterismadefromoxygenandhydrogenismonknowledge.→_________________________waterismadefromoxygenandhydrogen.五.语法填空Myroommate，Mary，issensitive1._____otherpeople’sevaluationofherappearance.Everydaybeforeclass，shespendsmorethananhourinthedormitory2.____(make)up.Shehas20lipsticks，oftenfeeling3.______(bother)aboutwhichonetouse.Recently，shehasbeenaddictedtoaselfieappontheInternet，uploadingeditedphotoseverydayandho