active passive verb forms：主动被动动词形式

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1、Active/PassiveVerbFormsSentencescanbeactiveorpassive.Therefore,tensesalsohave"ActiveForms"and"PassiveForms".Youmustlearntorecognizethedifferencetowritemoreeffectively.ACTIVEFORMInactivesentences,the“thing”doingtheactionisthesubjectofthesentenceandthe“thing”receivingtheactionistheobject.Most

2、sentencesareactive.[Thingdoingaction]+[VERB]+[thingreceivingaction]EXAMPLES:The professor              teaches                the students.(subject)                 (activeverb)           (object)(doingaction)                                         (receivingaction)John                    

3、      washes                     the dishes.(subject)                (activeverb)             (object)(doingaction)                                       (receivingaction)PASSIVEFORMInsomesentences,speakersusethepassiveform.Inthepassiveform,thethingreceivingtheactionisthesubjectofthesentenc

4、eandthethingdoingtheactionisoptionallyincludedattheendofthesentence.Youcanusethepassiveformifyouthinkthethingreceivingtheactionismoreimportantorshouldbeemphasized.[Thingreceivingaction]+[BE]+[pastparticipleofverb]+[by]+[thingdoingaction]EXAMPLES:The students              are  taught        

5、             by the professor.(subject)                   (passiveverb)(receivingaction)(doingaction)The dishes                  are washed                byJohn.(subject)                    (passiveverb)(receivingaction)                                       (doingaction)GrammarReviewExerc

6、ises[ThefollowingexerciseshavebeenpreparedbyIanJohnstonofMalaspinaUniversity-College,Nanaimo,BC. Thesepagesareinthepublicdomainandmaybeused,inwholeorinpart,byanyone,withoutpermissionandwithoutcharge,providedthesourceisacknowledged. LastrevisedApril2002]ActiveandPassiveVerbs1.0CommentsMostEn

7、glishverbshavetwovoices,theActiveandthePassive.Learnthedifferencebetweenthesetwo,notingcarefullythatthisisnotamatteroftense(present,past,orfuture)butdealswiththequestionofwhetherornotthesubjectisthesourceortherecipientoftheactionintheverb.Asageneralrule,