牛津8B unit3第五课时课件.ppt

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1、PeriodFiveGrammarOnefloppydiskkeyboardprintermouseprogramsharddiskCanyourememberwhattheyare?Whatdoweuseitfor?Weuseitforstoringinformation.Itisusedforstoringinformation.Whatdoweuseitfor?WeuseittotypeItisusedtotype.Whatdoweuseittodo?Weuseittoputthewordsandpicturesont

2、opaper.Itisusedtoputthewordsandpicturesontopaper.Whatdoweuseittodo?Wemoveitwithourhandstomovethecursoronthescreen.Itisusedtomovethecursoronthescreen.Whatdoweuseittodo?Weuseittocontrolourcomputer.Itisusedtocontrolourcomputer.Whatdoweuseittodo?Weuseittostoreinformati

3、on.Itisusedtostoreinformation.被动语态结构一般现在时am/is/are+动词的过去分词一般过去时was/were+动词的过去分词主动语态和被动语态的转换:主:被:IlearnEnglishEnglishislearnedme++++byTheorangeisverydelicious.____it_______(eat)byyoueveryday?IseatenThehillisverybeautiful.Doyouclimbiteveryday?____it_______(climb)byth

4、eboyeveryday?IsclimbedHowdeliciousthemeatis!Weateittoomuchinthepast.Butit_____________(noteat)toomuchwasn’teatenMostofuslikewatchingTV.ButTV_________________(notwatch)toomuchisn’twatchedIt’sgoodforustoplaybasketball.Doyouplayitasoftenaspossible?____it_______(play)b

5、yyourEnglishteacheryesterday?.WasplayedVegetablesareveryimportantforourhealth.______they________(eat)byyoueveryday?AreeatenThecomputerisverypopularnow._____it______(use)allovertheworldnow?IsusedWecanusethepassivevoicewhenItisobviouswhoperformstheaction.Wordprocessi

6、ngskillsaretaughtinourcomputerlessons.2.Wedonotknoworcannotrememberwhoperformedtheaction.Theprinterwassoldalready.3.WethinktheactionismoreimportantthanpersonwhoperformstheactionEducationalCD-ROMsaresoldinmanycountries.4.Wecanintroducethepersonwhoperformsanactionwit

7、hthepassivevoiceusing“by”Andthename(s)oftheperson(s)attheendofapassivesentenceThatCD-ROMwasdesignedbyNancyJackson.ReadPartAFillintheblanksTranslatethefollowingsentences3.Therobberwascaughtlastnight.1.Thebuildingwasbuiltlastyear2.RiceisgrowninChina.4.Theprinterwasso

8、ldalready.Hecleanedtheblackboard.2.IoftenhelpJim.3.Heplantedmanytreeslastyear.Theblackboardwascleanedbyhim.Jimishelpedbyme.Exercises:Manytreeswer