初三英语chapter1知识精讲 上海牛津版

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1、初三英语chapter1知识精讲一.本周教学内容：9Bchapter1ReadingcontentauthorguideconsumeratmosphereozonethreatenvironmentTheGreenhouseEffectwarmthlifelesscarbondioxidefuelpetrolleveldrownlayeroccurprotectivespraycanerosionsoilfloodingfloodmassivebillioncrashwreckedaccidentallypedes

2、trianmalariasoundsubstancenitrogenremovaldamagen.Don’tyourealizethedamagethesechemicalsaredoingtoourenvironment?v.Takecarenottodamagethecomputer.adj.damagingUnemploymenthashadadamagingeffectonus.destructionthethreatofnucleardestructiondestructiveJealousyisavery

3、destructiveemotion.destroyTheschoolwascompletelydestroyedbyfire.protect…from…Theozoneplayerprotectsusfromthesun.Thegovernmentplanstospendamassiveamountofmoneyonprotectingourcity’senvironmentfrompollution.keep…from…Theatmospherekeepsmuchofthewarmthfromgettingout

4、.burn…upThefirealmostburnseverythingup.keepinTheatmosphereiskeepingintoomuchheat.vitalItisvitalthatwedosth.tosavetheearth.Itisvitaltodosth.tosavetheearth.firstofallFirstofall,weshouldprotectourenvironment.actn.Thisisakindofcriminalact.v.Wemustacttoendthewar.Ist

5、artedactingwhenIwas12yearsold.letinLockthedoor.Don’tletthethiefin.takeinTreestakeinCO2.LanguageSolar-poweredvehicleaverageoneanotherdurianWhy…?Because…Whyistherenoelectricitythismorning?Becausethereisastormlastnight.Becauseoflastnight’sstorm.一、why能引导下列几种从句：1.　主

6、语从句WhyhetookChinesenationalityin1901isaquestionthatinterestsus.他为什么在1901年取得中国国籍，这是一个使我们很感兴趣的问题。2.宾语从句Heaskedherwhyshewasdoingthat.他问她为什么要那样做。3.表语从句That'swhyI'vecometoseeyou.　这就是我来见你的原因。4.状语从句Nomatterwhyshebecameangrywithyou,youshouldapologizetoher.不管她为什么对你生气，你也

7、应当向她道歉。二、why作疑问词时，可以用来向对方问及原因，可以用Why?或Whynot?二者都是省略句。分述如下：1.“Why?”用来针对肯定的内容发问。例如：A:Whatareyougoingtodotomorrow?B:Nothingmuch.Why?(=Whydoyouaskmethat?)2.Whynot?用来针对否定的内容发问：①对一般疑问句的否定回答进一步询问原因。例如：A：Doyouoftengotoschoolbybike?B:No,Idon't.A:Whynot?(=Whydon'tyougoto

8、schoolbybike?)三、why除了用作疑问句之外，还可以用作引导词（又称感叹句）放在句首或句中作插入语，表示惊奇等各种各样的情绪，不译为“为什么”，根据上下文它可以有“哟，啊呀，哎呀，嗨，噢，呃，啊唷”等不同译法。例如：①“....”“NextFriday?Why,what'shappening?”“……”“下星期五？啊，有什么事吗？”