Unit1LifeonMarsGrammar（2）Objectives:Touseclausesintroducedby“that”Touseobjectclausesintroducedby“if”,or“whether”Mainpoints:Touseclausesintroducedby“that”Touseobjectclausesintroducedby“if”,or“whether”Difficultpoints:Touseobjectclausesintroducedby“if”,or“whether”Teachingmethods:Task-basedteachingmethod,practiceTeachingproceduresStep1:Revision.Revisetheuseofcan,could,may,mightStep2:PresentationTeachObjectclauses.宾语从句属于名词性从句，在句中作主句的宾语。eg.WeknowMrGreenteachesEnglish.Sheaskediftheseanswerswereright.宾语从句三要素（一）、引导词（连接词）,１.由从属连词that引导的宾语从句注：that在句中无词汇意义，在从句中不能充当成分，在口语当中往往省略e.g.Ihear(that)hewillbebackinanhour.Hesaid(that)hemissedusverymuch.Theteachertoldus(that)theearthmovesaroundthesun.２.由从属连词whether,if引导的宾语从句if/whether“是否”，说明对陈述的事物不明确或不清楚。常用在ask,wonder,can(could)youtellme等后。３.只能用whether不能用if的情况1).在介词后面：I’mthinkingofwhetherweshouldgofishing.Weareworriedaboutwhetheritwillraintomorrow.2).在动词不定式前：Theyaskedmewhethertogoskating.3).当与ornot连用，或提出两种选择时:Idon’tknowwhetherhe’sfreeornot.MaryaskedwhetherIwasdoingmyhomeworkornot.Tellmewhetheryou’dliketogoshoppingortidytheroom.4).宾语从句提前时：Whetherthisistrueornot,Ican’tsay.（二）语序：陈述句语序即：主句+连接词+从句（主+谓+其他成分）Doyouremember_________(他多大岁数)?（三）时态：主句用现在时或将来时，从句可用任何时态。主句用过去时，从句用与过去相关的时态。1.从句说明的是一般真理、客观事实、自然现象、名言时，仍用现在时。Dadtoldusthatitisbettertodothantosay.Hetoldtheboythatthreeandthreeissix.Hetoldmetheearthmovesaroundthesun.2.从句中有具体时间状语，即使从句动作发生在主句动作前，仍用一般过去时。Theteachertoldmeshewasbornin1960.Step3.Homework1.Fillintheblanks1.Theradiosaysit_________cloudytomorrow.(be)2.Theheadmasterhopeseverything______well.(go)3.Tomsaysthatthey______________(play)basketballatsixo’clockyesterdayevening.4.Ihearthey______________(return)italready.5.Hesaidthatthey___________membersofthePartysince1948.(be)6.Heaskedwhatthey_____________ateightlastnight.(do)7.Theteachertoldhisclassthatlight_______fasterthansound.(travel)8.Ithinkyou____________aboutthemurdernow.(talk)2.将下列句子合并为一句:1.Dotheyliketogoskiing?Heasked.2.Heisdoinghishomework.Hesaid.3.Hewillcomeback.Tomsaid.4.Isshedoingherhomework?Jimasked.
