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IT用法和强调句1.指提到的事物:Dongguanisabeautifulcity,isn’tit?Isthisyourdog？No,itisn’t.Heisill.It’swhyheisabsent.Ihateitthathe’ssolazy.2.指婴儿或人(未知性别):Whoisthebaby？It’sme.Someoneisknockingatthedoor.Whoisit?一、it作人称代词1.指天气：Itissunnytoday,isn’tit?2.指时间:Itwas10o’clockwhenshecameback.It'sNovembr30,2009.3.指距离：Itisanhour’swalk/ridefrommyhometotheschool.4.指环境:Itwasveryquietinthecafé.5.指度量：Itisabout5kilograms.6.指价值：What‘sthepriceofthebook?Itis20yuan.二、it作非人称代词三、it用作形式主语1.Itis+adj/n+(forsb.)todosth.doingsththat从句Itisimportant(forus)tolearnEnglish.ItiswrongforustotellalieIt’snouse/nogood/nohelparguingaboutit.Itisnogoodsmokingtoomuch.Itisveryclearthatheisn’ttellingthetruth.Itisapitythathecan’tcometomybirthdayparty.Itissaid(reported/believed/known/told/hoped)+that从句据说（据报道……）ItissaidthatChinawillsendupanothersatelliteintospace.=Chinaissaidtosendupanothersatelliteintospace.Itwasreportedthatthousandsofpeoplehaddiedintheaccident.=ThousandsofpeoplewasreportedtohavediedintheaccidentItiswellknownthatChineseteamhavewonthevolleymatch.=Chineseteamiswellknowntohavewonthevolleymatch.2.Itis+v-ed(said)+that从句=sbis+v.ed(said)+todosth3.It+vi.(seems/appears/happens)+that从句=sb+vi.(seems/appears/happens)+todosthItseemsthatheenjoyspopsongsverymuch.=HeseemstoenjoypopsongsverymuchItappearedthatTomhadchangedhismind.=Tomappearedtohavechangedhismind.IthappenedthatImetmyoldfriendonthestreet.=Ihappenedtomeetmyoldfriendonthestreet.四、it作形式宾语动词有think,believe,make,find,consider,feel等。V+it+adj/n+(forsb)todosthdoingsththat从句Ithinkitimportant(forus)tolearnEnglish.=Ithinkthatitisimportant(forus)tolearnEnglishIbelieveitnogoodsmokingtoomuch.=Ibelieve(that)itisnogoodsmokingtoomuch.Ifeelitapitythathecan’tcometomybirthdayparty.=Ifeelthatitisapitythathecan’tcometomybirthdayparty.五、用于强调句型中Itis(was)+被强调成分+that从句(人)(who)(被强调成分:主语，宾语，状语)•一般疑问句：Is+it+被强调成分+that从句？•特殊疑问句：特殊疑问词+isit+that从句?•从句：引导词+itis+that从句ImetTomintheparkyesterday.1)ItwasIwhometTomintheparkyesterday.2)ItwasTomwhoImetintheparkyesterday.3)ItwasintheparkthatImetTomyesterday.4)ItwasyesterdaythatImetTominthepark.强调主语强调宾语强调地点状语强调时间状语1.我是在街上遇见我的父亲的。(强调在街上)ItwasinthestreetthatImetmyfather.Wasitinthestreetthatyoumetyourfather?Wherewasitthatyoumetyourfather?Hetoldmewhereitwasthathemethisfather.2.你是8点开始工作的吗？（强调时间）Wasitateighto’clockthatyoubegantowork?Itwasateighto’clockthatIbegantowork.Whenwasitthatyoubegantowork?Canyoutellmewhenitwasthatyoubegantowork?3.正是因为她病了，他们才没叫她做这项工作。（强调原因）Becauseshewasill,theydidn’taskhertodothejob.Itwasbecauseshewasillthattheydidn’taskhertodothejob.Wasitbecauseshewasillthattheydidn’taskhertodothejob?Whywasitthattheydidn’taskhertodothejob?4.他为什么不能回答这个问题？Whywasitthathecouldn’tanswerthequestion.六、几种句型区别1)强调句型：Itis(was)+被强调成分+that从句ItwasinthestreetthatImetmyfather.Itwasateighto’clockthatIbegantowork.2)定语从句ItwasthestreetwhereImetmyfather.Itwaseighto’clockwhenIbegantowork.3)since句型“自从”Itis+一段时间+since从句（did）Itwas+一段时间+since从句（haddone）Itistwohourssincehecameback.Hesaiditwastwohourssincehehadcomeback.4)before句型“过多长时间才…”Itwillbe+一段时间+before从句(do/does)Itwas+一段时间+before从句(did)Itwastwohoursbeforehecameback.Itwillbetwohoursbeforehecomesback.5）“第几次”句型Itis+第几次+that从句(havedone)是第几次干…Itwas+第几次+that从句(haddone)ItisthefirsttimethatIhavecometoBeijing.HesaidthatitwasthefirsttimethatIhadcometoBeijing.not...until...的强调形式:Itisnotuntil+被强调部分+that...“直到…才”主要用于强调时间状语的强调句型。Ididn'trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses.→NotuntilshetookoffherdarkglassesdidIrealizeshewasafamousfilmstar.→ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.Exercises:1.Fillintheblanks1.Is_____necessary______(complete)thedesignbeforeNationalDay?2_____isnogood_____(drink)toomuch.3.Tom’smotherkepttellinghimthatheshouldworkharder,but_____didn’thelp.4._____isafact______Englishisbeingacceptedasaninternationallanguage.5.Ihate_____whenpeopletalkwiththeirmouthsfull.ittocompleteItItdrinkingitItthatit6.Ilike_____intheautumnwhentheweatherisclear.7.Ithappened_____hewasunfitfortheoffice.8.Hehappened_________unfitfortheoffice.9.Ithink____possible____masteraforeignlanguage.10.Ithinkthat________possible____masteraforeignlanguage11.Heissaid________gonetoAmericaforfurtherstudy.12.____wassaid_____he_________toAmericaforfurtherstudy.itthattobeittoitistotohaveItthathadgone2.Choosethebestanswers1.Itwas___hesaid____disappointedme.A.what;thatB.that;thatC.what;whatD.that;what2.Isitinthefactory_____thistypeofcarsareproduced?A.whichB.whereC.thatD./3.Isitthefactory______thistypeofcarsareproduced?A.whichB.whereC.thatD./4._____onMondaynightthatallthishappened?A.IsitB.ItisC.WasitD.Itwas5.Itwas_____theoldworkercamethatwe_____theexperiment.A.until;didn’tbeginB.notuntil;beganC.untilbeganD.notuntil;didn’tbegin6.ItisI____singinginthegarden.A.whoareB.whoisC.thatamD.thatis3.Translations:1.我们学一门外语非常重要。Itisveryimportantforustolearnaforeignlanguage2.她嫁给那样的男士真让人惊讶。Itwasreallysurprisingthatshemarriedamanlikethat.3.和他们争吵是没用的.Itisnousearguingaboutitwiththem.4.你昨天没看成那部电影真遗憾.Itisapitythatyoudidn’tgotoseethefilmyesterday.5.据说他们发明了一种新型电脑.Itissaidthattheyhavei