九年级英语 unit9 when was it invented section a 学案 人教新目标版

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1、Unit9 Whenwasitinvented? SectionA主动语态与被动语态： 英语动词有两种语态,即主动语态(TheActiveVoice)与被动语态（ThePassiveVoice)。主动语态表示主语是动作的执行者/ 被动语态表示主语是动作的承受者e.g. 1.TheymaketrainsinZhuzhou.  主动语态TrainsaremadeinZhuzhou.  被动语态         2.Thefarmersgrowcotton everyyear.主动语态Cottonisgrownbythefarmers every year.被动语态一：被动语态的构

2、成:助动词be+(及物动词的)过去分词  am (is,are)+done  一般现在时was(were)+done   一般过去时二:主动语态变为被动语态的步骤:1.把原主动句中的宾语转换为被动语态的主语.2.把动词改为被动形式,即“be+过去分词”.注意be动词要按新的主语的人称和数进行变化,时态要和原来的主动语态的时态保持一致.3.原来主动语态句中的主语,如果需要,就放在by后面以它的宾格形式出现.如果没有必要就可以省略.其他的成分(定语,状语)不变,句式也不能变.主动语态变被动语态的结构图:Bell  invented thetelephone in1876. 主语 

3、 谓语动词过去时 宾语  时间状语Thetelephone wasinvented byBell   in1876主语 谓语动词的过去分词   宾语     时间状语三：被动语态的特殊用法:（一）：双宾语buy/makesbsth=buy/makesthforsb      givesbsth=givesthtosb1.Myfatherboughtmeacomputer. Acomputerwasboughtformebymyfather.Iwasboughtacomputerbymyfather.2.Hegivesmeabook.Abookisgiventomebyhim.

4、Iamgivenabookbyhim（二）、无to不定式变为被动时加上to 一感feel二听listento.hear§ 三让let.have.make四看watch.see.lookat.notice§eg.Weoftenseehimplaybasketball. Heisoftenseentoplaybasketballbyus.（三）、注意动词短语的完整性Thebabyistakengoodcareofbythenurse（四）、无被动语态的动词。 takeplacehappen  comeoutcometruedie  belongto§  课堂练习;一：用所给的词的

5、适当形式填空。1. Whatdoyouthinkisthemost___________(help)invention?2. Edisonwasagreat________(invent).Hehad1,093_______(invent)inhislife.3. Lightareusedfor__________(see)thingsinthedark.4. Personalcomputers___________(invent)in1976.5. Whichlanguage________themostwidely_________(speak)intheworld?6.

6、 Whenwasthec_________invented?7. Pleaseputtheusedb____________intothebox.8. Herearetheshoeswitha___________heels.二：用所给动词的正确形式填空：1)Thebike__________(fix)upbyXiaoMingyesterday.2)Sunglasses__________(use) forprotectingpeople’seyes.3)Apicture_________(put)upontheblackboard.4)French___________(s

7、peak)inFrance.5)Teenagersshould_________(allow)tochoosetheirownclothes.三：句型转换1.Peopleallovertheworldenjoysurfing.(同义句转换)  Surfing___ _________bypeopleallovertheworld.2.Whenhewasthirty,TomdecidedtomovetoLondon.(同义句转换）  Atthe______ofthirty,Tommadea________