高一英语Unit4Astronomythescienceofthestars主语从句新课标人教版.ppt

Unit4Astronomy:thescienceofthestars主语从句1．引导主语从句的连接词有三类：(1)连词that、whether：Thattheywereintruthsisterswasclearfromthefacialresemblancebetweenthem.Whetherhe’llcomehereisn’tclear.Thatpricewillgoupiscertain.Whetherwegobytrainorbyboatmakesnodifference.Whowillwritethepoemhasnotbeendecidedyet.Whateverhedidisright.3)连接副词where,when,how,why等。Howthishappenedisnotcleartoanyone.Whereveryouareismyhome----myonlyhome.A.It+be+形容词(obvious,true,natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc.)+that从句。如：Itiscertainthatshewilldowellinherexam.Itisprobablethathetoldhereverything.B.It+be+名词词组(nowonder,anhonour,agoodthing,apity,nosurprise,etc.)+that从句。如：It’sapitythatwecan’tgo.It’snosurprisethatourteamshouldhavewonthegame.C.It+be+过去分词(said,reported,thought,expected,decided,announced,arranged,etc.)+that从句。如：ItissaidthatMr.GreenhasarrivedinBeijing.ItisreportedthatChinahassentanotherman－madeearthsatelliteintoorbit.F.当that引导的主语从句出现在疑问句中时，要以it作形式主语，而把主语从句后置。如：Isittruethatthescientistwillgiveusalecturenextweek?Doesitmattermuchthattheywillnotcometomorrow?G.当主语从句出现在感叹句中时，要以it作形式主语，而把主语从句后置。如：Howstrangeitisthatthechildrenaresoquiet!3.主语从句不可位于句首的五种情况：4.主语从句需注意的问题(1)主语从句中用陈述语序WhatsheisafraidofistheirtakinghertoParis.(Whatissheafraidof…Wrong)(2)主语从句后谓语动词用第三人称单数Thattheyhaven’tphonedisstrange.4.It作形式主语和it引导强调句的比较5.what与that在引导主语从句时的区别what引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that则不然。例如：1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.1.Whereshallwespendtheholidayisn’tdecided.1.Ireadaboutitinsomebookorother,doesitmatter_______itwas?（01北京春季)A．whereB．whatC．howD．whichThankyou