Unit2languagePeriod6Grammar(1)一、双基提要It的用法1人称用法人称用法是指it可以用来代替一个名词、一个短语、一个从句或一个句子，以避免它们在句中的重复。这时它可以指提到过的，也可以指未提到过的，在句中作主语或宾语。（1）指非生物、动植物和不明性别的婴儿。Thatisanewmagazine.Iboughtitthismorning.（2）指成员众多的集体Theacrobatsperformedforalargeaudiencelastnight.Itwasveryexcitedbytheshow.（3）指某一动作或事情Ilikedancing,butshedoesn'tlikeit.2指示用法指示用法是指it用在句型“Itis/was+表语”中，指明某人或某物的身份。这时它可以代替this或that，作用同this或that，指提到过的或未提到过的。What'sthat?It'sacomputer.3先行用法（1）指代不定式。HowlongdoesittaketotravelfromBeijingtoShanghai.（2）指代动词-ing形式。以It'snouse,It'snogood等开头的句子常以-ing分词作真正主语。It'snogoodcryingoverspiltmilk.It'snousetryingtopersuadehim.（3）指代名词性从句。Itispitythatyoudidn'tseesuchagoodfilm.4无人称用法（1）用于表示自然现象、时间、距离、环境等。Isitcoldinthisroom?No,itisn't.（2）用于以连系动词seem,appear,look,happen等作谓语，后接一个that从句的句中。Itseemsthatheisalwayscorrect.Itappearsthatsheisanexperiencedteacher.5强调用法强调it本身无词义。它用来强调句中放在表语位置的某个句子成分（谓语动词除外），其强调句型为：“It+is/was+被强调成分（通常为主语、宾语、状语）+从句（由that/who引导）”。二、课堂反馈单项选择1.Tom‘smotherkepttellinghimthatheshouldworkharder,but___________didn’thelp.A.heB.whichC.sheD.it2.Is___________necessarytotellhisfathereverything?A.itB.thatC.whatD.he3.Idon’tthink___________possibletomasteraforeignlanguagewithoutmuchmemorywork.A.thisB.thatC.itsD.it4.Wasitinthispalace___________thelastemperordied?用心爱心专心A.thatB.inwhichC.inwhereD.which5.ItwasShanghai___________theCommunistPartyofChinawasfounded.A.whereB.thatC.atwhichD.thatwhere三、巩固练习（一）单项选择1Ittookusoveranhour___________alongthestreet.A.walkB.towalkC.walkingD.walked2Ithinkitagreathonour___________tovisityourcountry.A.toinviteB.invitingC.havinginvitedD.tobeinvited3Manypeoplenowmake___________aruletobuycardsfortheirfriendsbeforeChristmas.A.themselvesB.itC.thatD.this4___________isverycleartoeveryonethatheisroundandtalllikeatree.A.ThisB.WhatC.ThatD.It5IntheUnitedStates,bustraveldoesn’tcostmuchastraintravel,___________?A.don’ttheyB.doesitC.dotheyD.doesn’tit6Someoneisatthedoor,whois___________?A.thisB.thatC.itD.he7___________raininghardforthreehourswithoutstopping.A.ItisB.ItwasC.IthasbeenD.Ithadbeen8—Hastheboygothisbicyclenow?—Yes,thepolicegave___________.A.himtohimB.ittoitC.ittohimD.himtoit9Has___________beendecidedwhenwearetoholdthesports-meeting?A.thatB.thisC.itD.what10.—DidLiLeicallmewhileIwasout?—Yes,itwas___________thatcalledyou.A.himB.heC.whoD.whom11Nothingiswrongwiththeradio,___________?A.isn’titB.isthatC.isitD.isn’tthat12Idon’tthink___________difficultforaChinesestudenttomasteraforeignlanguagewithinfiveyears.A.thatB.itC.tooD.very13It’sthesecondtimeyou___________latethisweek.A.arriveB.arrivedC.havearrivedD.hadarrived14Itwillnotbe___________wemeetagain.A.longbeforeB.beforelongC.soonafterD.shortlyafter15It’sdemandedthatwe___________thereonfoot.A.nottogoB.don’tgoC.notgoD.won’tgo用心爱心专心16Itwasnotuntil1936___________basketballbecamearegularpartoftheOlympicGames.A.thatB.whenC.whichD.then17___________youmettheEnglishman?A.WhereitwasthatB.WhoitwasthatC.WherewasitthatD.Wherewasthat18___________thatshe...
