Unit9whenwasitinvent学习目标掌握重点单词和短语:invent发明;创造adjustable可调整的battery电池operate操作;作业microwave微波(的)slipper拖鞋heel鞋跟beusedfor用来做……lightbulb电灯泡掌握重点句型:①—Whenwasthetelephoneinvented?--Ithinkitwasinventedin1876.②—Whataretheyusedfor?--They’reusedofrseeinginthedark.③—Whoweretheyinventedby?—TheywereinventedbyJulieThompson.语法:一般过去时态被动语态的构成和用法。学会用英语谈论发明史,学会使用被动语态。第二课时(3a～4)andGrammer)根据句意及首字母提示完成单词You’dbetterputonyours___________afteryouentertheroom.Igavemysonabatteryo________toycarashisbirthdaypresentonhisbirthday.Idon’tliketheshoeswithhighh__________,theyoftenmakemeuncomfortable.Thecarwasi__________in1885,andtheyareusedfortravelingandcarryingheavythingstootherplaces.Don’tthrowwasteb__________away,theyareharmfultoourenvironment.二.用所给词的适当形式填空6.Thisthing____________(discover)overthreethousandyearsago.7.When__________theradio__________(invent)?8.Thelightbulbs___________(use)forseeinginthedark.9.This__________(call0amicrowaveoveninEnglish.10.ThenewCDplayer__________(make)inShanghai.11.Personalcomputers_________(invent)in1976.12.Thedoctorwasreadytodoan__________(operate)ononeoftheman’slegs.13.Whatdoyouthinkisthemost_________(help)inventionintheworld.重难点点拔Ithinkitwouldbebettertohave…我认为有个……会更好。此句为含有宾语从句的复合句,其中,Ithink为复合句的主句;itwouldbebettertohave…“wouldbebettertodosth”意为“最好做某事……”,相当于wouldbebesttodosth.在宾语从句中,it为形式主语,tohave…为真正的主语。It’sverycoldnow.Ithinkit___________________________________haveacottoncoat.(太冷了,我想有一件棉大衣能更好一些。)本单元语法巧归纳:被动语态1.被动语态的构成被动语态表示主语是动作的承受者,它由“助动词be+及物动词的过去分词”构成。助动词be有时态、人称和数的变化。以do为例,列表如下:时态被动语态构成一般现在时am/is/aredone一般过去时was/weredone一般将来时will/shallbedone现在进行时am/is/arebeingdone现在完成时have/hasbeendone过去进行时was/werebeingdone过去完成时hadbeendone2.被动语态的用法(1)不知道或没有必要说明动作的执行者时,用被动语态Suchbooksarewrittenforchildren.这些书是为孩子们写的。(2)动作的承受者是谈话的中心时,用被动语态。如果在谈话时既是关系动作的承受者又是关系动作的执行者时,通常用by引出动作的执行者。AnewpenwasgiventomebyLiMing.李明给了我一支新钢笔。(3)出于文章修辞的需要,使用同一主语,以求使作品简练。IwenttoAustraliaandwaswarmlywelcomed.我去了澳大利亚并受到热烈欢迎。3.主动语态变被动语态的方法。(1)把主动结构的宾语变为被动结构的主语。(2)把谓语变成被动结构(be+过去分词),时态不变。(3)把主动结构的主语变为被动结构中by的宾语。4.被动语态易错点(1)有些短语动词相当于及物动词,变被动语态时介词或副词不能去掉。Themeetingwasputoffbecauseoftheweather.(2)含有双宾语的主动句变成被动句时,通常把指“人”的间接宾语变为主语,指“物”的直接宾语保留不变。Hegavemeabookyesterday.(主动语态)Iwasgivenabookbyhimyesterday.(被动语态)如果要把“物”的直接宾语变为主语,则在间接宾语前加to或for。因此上句也可改为:Abookwasgiventomebyhimyesterday.(3)含有复合宾语的主动句变为被动句时,将其中的宾语变成主语,宾语补足语不变。Wesawhimsittingtherewithoutdoinganything.(主动语态)Hewasseensittingtherewithoutdoinganything.(被动语态)但是,如果宾语补足语是不带to的动词不定式,变成被动语态时要加上不定或符号to。Isawmyteacherenterthereading-rromjustnow.(主动语态)Myteacherwasseentoenterthereading-roomjustnow.(被动语态)(4)特殊疑问句的被动...
