人教版unit9课件Unit 9 When was it invented.ppt

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1、Unit9Whenwasitinvented?柳州市西鹅中学梁耀丹wasinvented:被发明结构:be(am/is/are/was/were)+动词的过去分词时态:被动语态(thePassiveVoice)英语根据其谓语动词与主语的关系分为两种语态即主动语态(TheActiveVoice)和被动语态(thePassiveVoice).主动语态表示主语是动作执行者,被动语态表示主语是动作的承受者。am/are/is+动词的过去分词：一般现在时的被动语态was/were+动词的过去分词：一般过去时的被动语态ManypeoplespeakEnglis

2、h.(主动语态)Englishisspokenbymanypeople.(被动语态)Thenaughtyboybrokethewindowyesterday.(主动语态)Thewindowwasbroken(bythenaughtyboy)yesterday.(被动语态)主动句与被动句之间的转换Weboughtsomebooks.主语谓语动词主动语态的过去式宾语Somebookswerebought(byus)主语谓语动词被动语态的过去分词介词+宾语主动句变为被动句所遵循的4个步骤：1把原主动句中的宾语变为被动句的主语。2把动词变为被动形式即be+过去分

3、词，并注意其人称和数随主语的变化，而动词的时态则保持不变。3原主动句的主语如需要则放在by后面以它的宾格形式出现（注代词的宾格），如不需要则可省略。4其它的成分（定语、状语）不变。被动语态的几种句型1肯定句主语+be+过去分词+(by…)Asweetsongwassungbyheronthestage.2否定句主语+be+not+过去分词+(by…)3一般疑问句Be+主语+过去分词+(by…)Asweetsongwasn’tsungbyheronthestage.Wasasweetsongsungbyheronthestage?4特殊疑问句疑问词+be+

4、主语+过去分词+(by…)Wherewasasweetsongsungbyher?练习一请把下列的主动句变为被动句（注意时态的一致）1Hewroteanarticlelastweek.Anarticlewaswrittenbyhimlastweek.2Thepeoplemakehistory.Historyismadebypeople.3DopeopleuseChineseonlyinChina?IsChineseusedbypeopleonlyinChina?4Theydidn’tvisitthecitytwoyearsago.Thecitywasn’

5、tvisitedbythemtwoyearsago.5Wheredidyoumakethem?Whereweretheymadebyyou?被动语态的几种类型一、由及物动词构成的被动语态1、有一个宾语的句子的被动语态主动句主语（S）+谓语（V）+宾语（O）被动句主语（原O）+be+过去分词+by+宾语(原S之宾格形式）Hecopiedothers’homework.(主动句)Others’homeworkwascopiedbyhim.(被动句)Thegirlopenedapresent.(主动句)Apresentwasopenedbythegirl.(被

6、动句)练习:2、有两个宾语的句子的被动语态主动句主语（S)+谓语V）+间接宾语(IO）+直接宾语（DO）被动句1主语（原IO）+be+过去分词+原DO+by+原主语之宾格Theteachershowedmeapicture.(主动句)Iwasshowedapicturebytheteacher.(被动句1)被动句2主语（原DO）+be+过去分词+to/for+原IO+by+原主语之宾格Apicturewasshowntomebytheteacher.(被动句2)练习1Tomgivesthepoorgirlsomefoodeveryday.Thepoorg

7、irlisgivensomefoodbyTomeveryday.SomefoodisgiventothepoorgirlbyTomeveryday.2Studentsmadeteacherspostcards.Postcardsweremadeforteachersbystudents.3Theheadmasterbroughtusgoodnews.Goodnewswasbroughttousbytheheadmaster.(注:有些及物动词只用直接宾语作被动语态的主语)有两种被动语态的一些动词:buy买give给pay支付teach教授tell告诉sh

8、ow展示lend借出通常用直接宾语作被动语态的主语一些动词:bring拿来do做