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1、GrammarEmphasis sentenceEmphasis sentence强调句强调句Unit4GlobalwarmingLearningaims1.Review the usages of it.2.To learn the emphasissentence.3.To masterhowtousethe sentence structure.1.it 作人称代词,主要指刚提到的事物，以防止重复; 也可以指动物或婴儿.2.it作非人称代词，有时并不指详细的东西，而泛指天气、时间、日期、间隔 等.Reviewtheuseof“it(1)3.用以代替指示代词this, that4. it
2、作形式主语，而真正的主语是动词不定式、动名词或从句。5. it 作形式宾语，而真正的宾语是动词不定式、动名词或从句。( )1.Look at the picture. It is a picture of our school. A.代指时间( )2.Its half past eight now. B.代指环境 ( )3.Its only half an hours walk from here to our school. C.代指物件( )4.It rains heavily D.代指间隔 ( )5.It is quiet here E.代指天气( )6.It is possible t
3、hat we will win F.形式主语. ( )7.I think it easy to put on weight. G.形式宾语Reviewtheuseof“itMatchthefunctionof“itwiththerightsentence:CADEBFG观察后发现1.Itishumanactivitythathascausedthisglobalwarming.2.Itisenvironmentaliststhat/whohavetriedtostoptheearthstemperaturerising.3.ItwasJackwho/thatletoutthesecret.4.
4、Wasitduringthe20thcenturythatthetemperatureoftheearthwentupaboutonedegreeFahrenheit?5.WhenwasitthathemovedtoAmerica?6.Itwasnotuntilshetookoffherglassesthatwerecognizedher.我的发现1强调句型的根本构造为：(如例句1、2和32强调句型的一般疑问句为：如例句33强调句型的特殊疑问句为：如例句44notuntil的强调句型为：如例句6须将主句中的否认副词not连同until时间状语从句一起提早进展强调,且后面谓语用肯定形式。Itis
5、/was+被强调部分+that/who+其他成分Is/Wasit+被强调部分+that/who+其他成分？特殊疑问词+is/wasit+that/who+其他成分？Itis/was+notuntil+that+其他成分。一、Task1:Itis/was+被强调部分+that/who+其他成分1.此强调句型只能强调主语、宾语、状语，不能强调谓语2.强调时间状语、地点状语、原因状语等要用that而不能用when,where,why;强调原因状语从句时，从句只能由because引导，不能由as,since引导。ItwasinthestreetthatImetherfather.强调地点Itwasat
6、eightoclockthatyoubegantowork.强调时间Itwasbecauseshewasillthatthebossdidntaskhertodothejob.强调原因3.被强调部分指人并作主语时用who/that,而被强调部分指物时只能用that.ItwasTomwho/thatfoundmypenintheclassroomyesterday.ItwasmypenthatTomfoundintheclassroomyesterday.1.强调主语ItwasTomthat/wholostabookinthetaxiyesterdaymorning.2.强调宾语3.强调地点状语
7、ItwasinthetaxithatTomlostabookyesterdaymorning.4.强调时间状语ItwasyesterdaymorningthatTomlostabookinthetaxi.Tomlostabookinthetaxiyesterdaymorning.ItwasabookthatTomlostinthetaxiyesterdaymorning.问题探究:要想强调met怎么办? Tom did loseabookinthetaxiyesterdaymorning.应借助于助动词do.把以上四句话变为一般疑问句1.WasitTomthat/wholostabookint
8、hetaxiyesterdaymorning?2.WasitabookthatTomlostinthetaxiyesterdaymorning?3.WasitinthetaxithatTomlostabook1.yesterdaymorning?2.4.WasityesterdaymorningthatTomlostabookinthetaxi?分别对划线部分提问：Tomlostabookinthetaxiyesterdaymorning.1.Whowasitthat/wholostabookinthetaxiyesterdaymorning?2.WhatwasitthatTomlostint
9、hetaxiyesterdaymorning?3.WherewasitthatTomlostabookyesterdaymorning?4.WhenwasitthatTomlostabookinthetaxi?含有notuntil的强调句1.Ididnthearfromheruntillastsummer.ItwasnotuntillastsummerthatIheardfromher.2.Theydidntgohomeuntiltheyfinishedtheirtask.Itwasnotuntiltheyfinishedtheirtaskthattheywenthome.二、Task 2:如
10、何去判断强调句？It is (was).that(who) 去掉，该句应该意思完好，不缺任何句子成分。 Itwas7oclockwhenhecameback.他回来时7点钟了Itwasat7oclockthathecameback.他是7点钟回来的it指时间 强调句，强调at 7 oclock 高考链接：1.(NMET1997)Itwasabout600yearsago_thefirstclockwithafaceandanhourhandwasmade.A.thatB.untilC.beforeD.whenA2.(2021全国II)ItwasinNewZealand_Elizabethfir
11、stmetMr.Smith.A.thatB.howC.whichD.when3.2021天津卷ItwasalongtheMississippiRiver_MarkTwainspentmuchofhischildhood.A.howB.whichC.thatD.whereAC It is I that need your help.It is he that needs your help.问题探究:红色部分的区别是如何产生的?说明什么?例Itwasnotluckbutdifficultiesthat_himsucceed.A.makesB.makeB注意强调句和其他句型的区别，慎选连接词。1.形式上有什么特点?2.可以用来强调什么成分?3.如何识别?SummarySummaryFinishofftheexercises.
