资源描述：
《高一英语 unit4 cyberspace导学案7 北师大版》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Unit4Cyberspace导学案7Grammar寄语：Thereisnoendtolearning.学无止境。Learningaims:graspthefirstconditionalandthesecondconditionalLearningimportantpoint:understandthedifferencebetweenthefirstconditionalandthesecondconditionalLearningdifficultpoint:learntousethesecondcondi
2、tionalLearningsteps:Step1.翻译下面的句子，然后思考总结：(1)Ifourteacheragrees,we’lltalkaboutthetopic.(2)如果明天天气好，你要做什么？(3)Ifpeopledon’tstoppollutingtheair,animalsandplantswillsoondie.(4)如果你太累，你可以休息一下。（5）Ifyouhavetime,wecangoforawalkthisevening.(6)Ifyoufeelsleepy,gotobed.(7)如
3、果她来，请给我打电话。以上的句子是if引导的真实条件句（8）IfIwereyou,Iwouldhelpthepoor.(9)IfIcouldfly,Icouldliveonthemoon.(10)Ifhehadgetupearlier,Iwouldhavecaughttheearlybus.这些句子表示将来不可能发生或与事实相反的情况或状态，我们把这种if引导的条件句叫虚拟条件句。Step2.虚拟条件句的构成：（1）与现在事实相反条件句：一般过去时（be一般用were）主句：would(should,could,
4、might)+动词原形IfIknewhisaddress,Icouldwritealettertohim.(1)与过去事实相反条件句：过去完成时（构成：+）主句：would(should,could,might)+have+动词的过去分词Ifyouhadworkedharder,youwouldhavegottenhighgradesinthisexam.(2)与将来事实相反动词过去式would（should条件句：should+动词原形主句：might,could）wereto+动词原形+动词原形Ifitrai
5、nedthisafternoon,thefootballmatchwouldbeputoff.注意：（1）在虚拟语气的从句中，动词'be'的过去时态一律用"were"，不用was，即在从句中be用were代替。IfIwereyou,Iwouldgotolookforhim.如果我是你，就会去找他。Ifhewerehere,everythingwouldbeallright.如果他在这儿，一切都会好的。（2）在虚拟条件状语中如果有were,should,had这三个词，通常将if省略，主语提前,变成were,sho
6、uld,had+主语的形式。但要注意，在虚拟条件状语从句中，省略连词的倒装形式的句首不能用动词的缩略形式。如我们可说WereInottodo.,而不能说Weren'tItodo.Weretheyherenow,theycouldhelpus.=Hadyoucomeearlier,youwouldhavemethim=Shoulditrain,thecropswouldbesaved.=SteptwoⅡ:当堂检测：一、选择题（1）---- I thought you would come back tomorrow
7、. （2）---- I would if I ___ to attend a meeting. A. don’t have B. didn’t have C. will not have D. would（3） If I ___ you, I wouldn’t return the call. A. be B. am C. was D. were （4） _____ today, he would get there by Friday. A. Would he leave B. Wa
8、s he leaving C. Were he to leave D. If he leave 二、用所给动词的适当形式填空(1)Ifthey(eat)less,theywouldn’tbesofat.（2）Ifyouwalktenmiles,you(feel)tired.(3)Wewouldtakeyoutotheconcertifwe(ha
