八年级英语下册 Unit 3 Online travel Grammar知识点拨 牛津版.doc

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1、Unit3Onlinetravel一、教学内容：Unit3OnlinetravelGrammar 二.教学目标：掌握Unit3的词法结构和用法：PassiveVoice1.被动语态结构：be+动词的过去分词。2.重点掌握以下6种情况的被动语态：①一般现在时的被动语态(am/is/are+过去分词)②一般过去时的被动语态(was/were+过去分词)③一般将来时的被动语态(willbe+过去分词)/(am/is/aregoingtobe+过去分词)④现在进行时的被动语态(am/is/arebeing

2、+过去分词)⑤现在完成时的被动语态(have/hasbeen+过去分词)⑥含有情态动词的被动语态(情态动词+be+过去分词)3.重点掌握两种特殊情况的被动语态①含有使役动词、感官动词和help后接不带to的动词不定式改为被动语态时要加上to。②双宾语的情况改为被动语态时有两种改法。4.特别注意happen(takeplace)及系动词feel,sound,taste,smell,look等没有被动语态的情况。 经典讲解：被动语态英语中的语态(voice)英语中有两种语态：主动语态和被动语态。1)主

3、动语态(activevoice)表示主语是动作的发出者、执行者.ManypeoplespeakEnglish.主语manypeople发出、执行了speak的动作2)被动语态(passivevoice)表示主语是动作的承受者，即行为动作的接受者。Englishisspokenbymanypeople.主语English是动词speak的承受者。被动语态的构成被动语态由“be＋及物动词的过去分词”构成。人称、数和时态的变化是通过be动词的变化表现出来的。现以teach为例说明被动语态在各种时态中的构

4、成。一般现在时：am／is／are＋taught一般过去时：was／were＋taught一般将来时：will／shallbe＋taught现在进行时：am／is／arebeing＋taught过去进行时：was／weredoing＋taught现在完成时：have／hasbeen＋taught（一）一般现在时的被动语态一般现在时被动语态表示经常性、习惯性的被动动作。am/is/are+done改为被动语态e.g.1：Hisbrotherwashesbowlseveryday.Bowlsarewa

5、shedbyhisbrothereveryday.e.g.2：Adogfollowsme.I’mfollowedbyadog.e.g.3:Footballisplayedallovertheworld.否定句：Footballisnotplayedallovertheworld.一般疑问句：Isfootballplayedallovertheworld?翻译句子：1.这些玩具是中国制造的。ThesetoysaremadeinChina2.这个公园是为老年人建造的。Theparkisbuiltfor

6、theold. 【典型例题】一般现在时的主动语态变被动语态：1.Brucewritesalettereveryweek.【答案】→AletteriswrittenbyBruceeveryweek.2.Thisfactoryproducesmachinetools.【答案】→Machinetoolsareproducedinthisfactory.3.Theyoftenmakefunofher.【答案】→Sheisoftenmadefunof.4.Everyonerespectsher.【答案】→S

7、heisrespectedbyeveryone.5.Wecleanourclassroomeveryday.【答案】→Ourclassroomiscleanedbyuseveryday.6.Doyouwashyourclothesveryoften?【答案】→Areyourclotheswashedveryoften?7.MostpeopleintheUSAspeakEnglish.【答案】→EnglishisspokenbymostpeopleintheUSA.8.Peoplelistentot

8、hisprogrammeinmanycountries.【答案】→Thisprogrammeislistenedtoinmanycountries.9.PeoplespeakEnglishinmanycountries.【答案】→Englishisspokeninmanycountries.10.Doyouoftencleanyourroom?【答案】→Isyourroomoftencleanedbyyou? （二）一般过去时的被动语态一）掌握一般过去时的被动语态的概念及构成一般过