各大时态的被动语态讲解课件

Weshouldmovefrom”MadeinChina”to“CreatedinChina”,from“Chinaspeed“to“Chinaquality”,“from“Chineseproducts”to“Chinesebrands”.

Weshouldmovefrom”Ma被动语态ThePassiveVoice被动语态ThePassiveVoice被动语态基本用法当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。被动语态基本用法一、运用被动语态的情景1.讲话者不知道动作的执行者或不必说出动作的执行者(这时可省by短语)。

Mybikewasstolenlastnight.2.借助被动的动作突出动作的承受者。

IwasgiventenminutestodecidewhetherIshouldaccepttheoffer.3.为了更好地安排句子。

Thewell-knownpersongotonthebusandwasimmediatelyrecognizedbypeople.（一个主语就够了）一、运用被动语态的情景1.讲话者不知道动作的执行者或不必说Hisbrotherwashesbowlseveryday.主谓宾(受动者)Bowlsare

washedbyhis

brother

every

day.改为被动语态HisbrotherwashesbowlseveTheyplayfootballonSunday.Lucydoesthehomeworkintheevening.Theyoftenusecomputersinclass.WemakethesemachinesinBeilun.PeoplespeakEnglishasthefirstlanguageinUK.FootballisplayedbythemonSunday.ThehomeworkisdonebyLucyintheevening.Computersareoftenusedbytheminclass.ThesemachinesaremadeinBeilun.EnglishisspokenasthefirstlanguageinUK.你知道这些被动句的否定句和一般疑问句吗？TheyplayfootballonSunday.F1.They

make

shoesinthatfactory.主语+及物动词+宾语Shoes

aremade(bythem)inthatfactory.一般现在时：S(主语）+am/is/are+过去分词变为被动语态1.TheymakeshoesinthatHelookedafterthelittlebabyyesterday.主谓宾(受动者)Thelittlebaby

waslookedafterbyhimyesterday.HelookedaftertheTheybuiltthetallbuildinglastyear.Hetookgoodcareofhislittlebrotheryesterday.Wecleanedourclassroomjustnow.Theyusedthisroomforresting.Theyplantedmanytreesyearsago.Thetallbuildingwasbuiltbythemlastyear.Hislittlebrotherwastakengoodcareofbyhimyesterday.Ourclassroomwascleanedbyusjustnow.Thisroomwasusedforrestingbythem.Manytreeswereplantedbythemyearsago.Theybuiltthetallbuildingl2.They

bought

tencomputerslastterm．Tencomputers

werebought(bythem)lastterm.一般过去时：S+was/were+过去分词2.TheyboughttencompuTomwillcleantheroomtomorrow.主谓宾(受动者)TheroomwillbecleanedbyTom

tomorrow.TomwillcleantheroomtomoWewillhaveasportsmeetingnextweek.Childrenwilltakesomephotosintheschoolyardtomorrow.Theheadmasterwillgiveatalkthisafternoon.Thefarmerswillgrowdifferentkindsofvegetablesnextspring.UncleWangwillmendtheTVsettomorrow.Asportsmeetingwillbehadbyusnextweek.Somephotoswillbetakenbychildrenintheschoolyardtomorrow.Atalkwillbegivenbytheheadmasterthisafternoon.Differentkindsofvegetableswillbegrownbythefarmersnextspring.TheTVsetwillbemendedbyUncleWangtomorrow.Wewillhaveasportsmeeting3.They

willfinish

theworkintendays.Thework

willbefinished(bythem)intendays.一般将来时：S+will+be+过去分词3.Theywillfinishtheworkin4．Amy

cantakegoodcareof

Gina

．Gina

canbetakengoodcareof

byAmy.情态动词：S+can/may/must/should+be+过去分词4．AmycantakegoodcareofG1.Hecantakecareofthebaby.2.Lucymaydrawthepictures.3.Youmustturnoffthelights.4.TheyshouldlearnEnglishwell.5.Jimcoulddoityesterday.Thebabycanbetakencareofbyhim.ThepicturemaybedrawnbyLucy.Thelightsmustbeturnedoffbyyou.Englishshouldbelearnedwellbythem.ItcouldbedonebyJimyesterday.1.Hecantakecareofthebaby归纳总结方法把主动语态变为被动语态可按“一变、二套、三注意”来进行。即：一变---把主动语态的宾语改为被动语态的主语，把主动语态的主语改为被动语态的介词by的宾语。二套---根据原句的时态套用相应的时态。三注意---注意人称的变化而引起的主谓一致问题。例如：ManypeoplespeakEnglish.Englishbymanypeople.Hewashedhisshoesyesterday.Hisshoesbyhimyesterday.isspokenwerewashed归纳总结方法把主动语态变为被动语态可按“一变、二套练习：1.ManypeoplespeakEnglish.2.TheymadecomputersintheU.S.A.3.Peopleusedknivesforcuttingthings.4.Peopleusedmetalformakingmachines.5.TheyproducesilkinSuzhouandHangzhou.6.TheyspeakEnglishinCanada.

练习：7.TheywritebusinesslettersinEnglish.

8.TheygrowriceinSouthChina.

9.TheyplantmanytreesinNorthChina.

10.LuXunwrotethisbook.

11.Theworkersbuiltsomebridges.12.Wecanusetheboxasatable.

13.Weshouldcleantheclassroomeveryday

7.Theywritebusinessletters下列时态的被动语态构成

1.Lucyiswateringthetrees.

2.Theboywasmendinghisbike.3.Wehavefinishedourcompositions.

看一看想一想看一看想一想Someworkers

arepainting

theroomsnow．Therooms

arebeingpainted

bysomeworkersnow.现在进行时：

S+am/is/are+being+过去分词各大时态的被动语态讲解(同名104)课件I

wasdoing

myhomeworkat8:00lastnight．Myhomework

wasbeingdone(byme)at8:00lastnight.过去进行时：

S+was/were+being+过去分词Iwasdoingmyhomeworkat8We

havemade

twentymorekeys．Twentymorekeys

havebeenmade

byus.现在完成时：

S+have/has+been+过去分词Wehavemadetwentymoreke各种时态的主动语态和被动语态谓语结构对照表时态主动语态被动语态1一般现在时do/doesam/is/are+过去分词2一般过去时didwas/were+过去分词3一般将来时will/begoingto+动词原形will/begoingto+be+过去分词4过去将来时would+动词原形would+be+过去分词5现在进行时am/is/are+现在分词am/is/are+being+过去分词6过去进行时was/were+现在分词was/were+being+过去分词7现在完成时have/has+过去分词have/has+been+过去分词8过去完成时had+过去分词had+been+过去分词9含情态动词情态动词+动词原形情态动词+be+过去分词各种时态的主动语态和被动语态谓语结构对照表时态主动语态被被动语态中的特殊情况1.不及物动词带介词和介词宾语时，在变为被动语态时，仍然要带上介词。e.g.Thestudentslistento

theteachercarefullyinclass.被动句：Theteacherislistenedtocarefullybythestudentsinclass.e.g.Theylookafterthenewstudentsintheschool.被动句：Thenewstudentsarelookedafterbythemintheschool.被动语态中的特殊情况1).Parentsalwayslookafter

theirchildrencarefully.Childrenarealwayslookedafter

carefully.2).Shewillturnoff

thelightafterclass.Thelightwillbeturnedoff

afterclass。3).Shelistenedto

theteacherscarefullysometimes.Theteacherswere

listenedto

carefullysometimes.1).Parentsalwayslookaftert

2.当动词带有复合宾语(有宾补),并且宾补是省去“to”的动词不定式时，在被动语态中应加“to”e.g.Theymakeusdo

allthework.被动句：We

aremadeto

doalltheworkbythem.e.g.Weoften

hearhersing

songs.被动句：She

isoftenheardtosing

songsbyus.e.g.I

sawhimwalk

toschool.被动句：He

wasseento

walktoschoolbyme.特别提示：一些使役动词(let,have,make等)或感观动词(see,hear,watch,中后面接的动词不定式不带to，但改为被动时，要补上to。(记忆口诀：“使感动词”真奇怪，to在句中像妖怪，主动语态to走开，被动语态to回来。”)2.当动词带有复合宾语(有宾补),并且宾补是省去“to使役动词和感观动词主被动语态对照表主动语态被动语态使役动词makesb.dosth.sb.bemadetodosth.havesb.dosth.sb.behadtodosth.letsb.dosth.sb.belettodosth.感观动词seesb.dosth.sb.beseentodosth.watchsb.dosth.sb.bewatchedtodosth.hearsb.dosth.sb.beheardtodosth.noticesb.dosth.sb.benoticedtodosth.go使役动词和感观动词主被动语态对照表主动语态被动语态使役动词m①Thebossmakes

theworkerswork

18hoursaday.Theworkersaremadeto

work

18hoursadaybytheboss.②I

saw

him

enter

thehouse.Hewasseentoenter

thehousebyme.③Theteacherlet

them

leave

theclassroomafterclass.Theywerelettoleave

theclassroombytheteacherafterclass.④Wehear

her

sing

intheroomeveryday.Sheisheardtosing

intheroomeveryday.[注意]当使用see/hear/watchsb.doingsth.时，变为被动语态时，doing保持不变。如：

Isawhimgoing

intotheshop.(主动)Hewasseengoing

intotheshop.(被动)①Thebossmakestheworkers3.当动词带双宾语时(一个宾语是指人，一个是指物)，将其中指人的宾语提前作被动句的主语时，另一个宾语按顺序照抄下来；如是将指物的宾语提前作被动句的主语，在被动句中则指人宾语前应加“to”或“for”。e.g.Hegivesmeaflowereveryday.

被动1Iamgivenaflowerbyhimeveryday.

被动2Aflowerisgiventomebyhimeveryday.e.g.Mymotherboughtmeacomputer.

被动1Iwasboughtacomputerbymymother.

被动2Acomputerwasboughtformebymymother.3.当动词带双宾语时(一个宾语是指人，一个是指物)，将其1.Hepassedmesomepaper.Iwaspassedsomepaperbyhim.Somepaperwaspassedtomebyhim.

2.Heboughtmeapresentformybirthday.Iwasboughtapresentbyhimformybirthday.Apresent

wasboughtformeformybirthdaybyhim.

3.Theyhavegivenmesomegoodadvice.

Ihavebeengivensomegoodadvice.Somegoodadvicehasbeengiventome.1.Hepassedmesomepaper.练习：将下列句子变为被动句。

1.LiLeilistenstohisfathercarefully.

LiLei’sfatherislistenedtocarefullybyLiLei.

2.Themotherlookedafterthebabyintheroom.Thebabywaslookedafterbythemotherintheroom.3.Wetookcareofthethings.Thethingsweretakencareofbyus.4.Theygaveussomework.

Weweregivensomeworkbythem.Someworkwasgiventousbythem.5.Theboymadethemlaughallthetime.

Theyweremadetolaughallthetimebytheboy.6.Mymotherbuysmeabike.

Abikeisboughtformebymymother.Iamboughtabikebymymother.

练习：1.Peopleuseknivesforcuttingthings.Knives____________forcuttingthings.2.Thestudentscleanthewindowsoftheirclassroomtwiceamonth.Thewindowsoftheirclassroom_____________twiceamonth.EXERCISES

areusedarecleaned(变被动语态）1.Peopleuseknivesforcuttin5.Hisdoctormadehimhaveonlytwomealsaday.He___________________________onlytwomealsaday.6.Nowpeoplecanusecomputerstohelpthem.Nowcomputers___________________tohelpthem.

wasmadetohave

canbe

used5.Hisdoctormadehimhaveon3.Ifoundtheticketonthefloor.________________________onthefloor.4.Itoldhertoreturnthebookintime.She_____________toreturnthebookintime.The

ticket

was

found

was

told3.Ifoundtheticketonthefl9.Theforeignfriendsgaveussomewonderfulstamps.1)____________________somewonderfulstamps.2)Somewonderfulstamps_____________________________.

we

were

given

were

giventous9.Theforeignfriendsgaveus7.Didyouplantmanytreesatthistimelastyear?___________________________atthistimelasttime?8.Mustwefinishourworktoday?_______ourwork_____________today?WeremanytreesplantedMust

be

finished7.Didyouplantmanytrees10.TheteacheraskedTomtoturnonthecomputer.Tom_______________toturnonthecomputer.11.Inthisfactorywomendomostofthework.Mostofthework_______________bywomeninthisfactory.

wasasked

isdone10.TheteacheraskedTomtotu12.Hecanmendthebikeintwodays.Thebike___________________intwodays.13.Youmusttakethismedicinethreetimesaday.Thismedicine______________________threetimesaday.canbemended

mustbe

taken12.Hecanmendthebikeintwo14.ThestudentsinthisschoolstudyGerman.German_______________bythestudentsinthisschool.15.Dotheyoftentalkaboutthisquestion?______thisquestionoften_______about______________?

is

studiedIs

talked

bythem14.ThestudentsinthisschoolHomework:1.Hecleanstheclassroomeveryday.2.Theyfinishedtheirhomework.3.Icanmendhisbike.4.Shewillbuytenbookstomorrow.5.Weshouldn’tallowthemtogooutwiththeirfriends.6.Theoldmanoftenmakesuslaugh.Homework:各种时态的被动语态构成一般现在时：一般过去时：情态动词：一般将来时：现在进行时：现在完成时：过去进行时：S+am/is/are+doneS+was/were+doneS+can/may/must/should+be+doneS+will+be+doneS+am/is/are+being+doneS+have/has+been+doneS+was/were+being+done各种时态的被动语态构成一般现在时：S+am/is/are20212021

Weshouldmovefrom”MadeinChina”to“CreatedinChina”,from“Chinaspeed“to“Chinaquality”,“from“Chineseproducts”to“Chinesebrands”.

Weshouldmovefrom”Ma被动语态ThePassiveVoice被动语态ThePassiveVoice被动语态基本用法当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。被动语态基本用法一、运用被动语态的情景1.讲话者不知道动作的执行者或不必说出动作的执行者(这时可省by短语)。

Mybikewasstolenlastnight.2.借助被动的动作突出动作的承受者。

IwasgiventenminutestodecidewhetherIshouldaccepttheoffer.3.为了更好地安排句子。

Thewell-knownpersongotonthebusandwasimmediatelyrecognizedbypeople.（一个主语就够了）一、运用被动语态的情景1.讲话者不知道动作的执行者或不必说Hisbrotherwashesbowlseveryday.主谓宾(受动者)Bowlsare

washedbyhis

brother

every

day.改为被动语态HisbrotherwashesbowlseveTheyplayfootballonSunday.Lucydoesthehomeworkintheevening.Theyoftenusecomputersinclass.WemakethesemachinesinBeilun.PeoplespeakEnglishasthefirstlanguageinUK.FootballisplayedbythemonSunday.ThehomeworkisdonebyLucyintheevening.Computersareoftenusedbytheminclass.ThesemachinesaremadeinBeilun.EnglishisspokenasthefirstlanguageinUK.你知道这些被动句的否定句和一般疑问句吗？TheyplayfootballonSunday.F1.They

make

shoesinthatfactory.主语+及物动词+宾语Shoes

aremade(bythem)inthatfactory.一般现在时：S(主语）+am/is/are+过去分词变为被动语态1.TheymakeshoesinthatHelookedafterthelittlebabyyesterday.主谓宾(受动者)Thelittlebaby

waslookedafterbyhimyesterday.HelookedaftertheTheybuiltthetallbuildinglastyear.Hetookgoodcareofhislittlebrotheryesterday.Wecleanedourclassroomjustnow.Theyusedthisroomforresting.Theyplantedmanytreesyearsago.Thetallbuildingwasbuiltbythemlastyear.Hislittlebrotherwastakengoodcareofbyhimyesterday.Ourclassroomwascleanedbyusjustnow.Thisroomwasusedforrestingbythem.Manytreeswereplantedbythemyearsago.Theybuiltthetallbuildingl2.They

bought

tencomputerslastterm．Tencomputers

werebought(bythem)lastterm.一般过去时：S+was/were+过去分词2.TheyboughttencompuTomwillcleantheroomtomorrow.主谓宾(受动者)TheroomwillbecleanedbyTom

tomorrow.TomwillcleantheroomtomoWewillhaveasportsmeetingnextweek.Childrenwilltakesomephotosintheschoolyardtomorrow.Theheadmasterwillgiveatalkthisafternoon.Thefarmerswillgrowdifferentkindsofvegetablesnextspring.UncleWangwillmendtheTVsettomorrow.Asportsmeetingwillbehadbyusnextweek.Somephotoswillbetakenbychildrenintheschoolyardtomorrow.Atalkwillbegivenbytheheadmasterthisafternoon.Differentkindsofvegetableswillbegrownbythefarmersnextspring.TheTVsetwillbemendedbyUncleWangtomorrow.Wewillhaveasportsmeeting3.They

willfinish

theworkintendays.Thework

willbefinished(bythem)intendays.一般将来时：S+will+be+过去分词3.Theywillfinishtheworkin4．Amy

cantakegoodcareof

Gina

．Gina

canbetakengoodcareof

byAmy.情态动词：S+can/may/must/should+be+过去分词4．AmycantakegoodcareofG1.Hecantakecareofthebaby.2.Lucymaydrawthepictures.3.Youmustturnoffthelights.4.TheyshouldlearnEnglishwell.5.Jimcoulddoityesterday.Thebabycanbetakencareofbyhim.ThepicturemaybedrawnbyLucy.Thelightsmustbeturnedoffbyyou.Englishshouldbelearnedwellbythem.ItcouldbedonebyJimyesterday.1.Hecantakecareofthebaby归纳总结方法把主动语态变为被动语态可按“一变、二套、三注意”来进行。即：一变---把主动语态的宾语改为被动语态的主语，把主动语态的主语改为被动语态的介词by的宾语。二套---根据原句的时态套用相应的时态。三注意---注意人称的变化而引起的主谓一致问题。例如：ManypeoplespeakEnglish.Englishbymanypeople.Hewashedhisshoesyesterday.Hisshoesbyhimyesterday.isspokenwerewashed归纳总结方法把主动语态变为被动语态可按“一变、二套练习：1.ManypeoplespeakEnglish.2.TheymadecomputersintheU.S.A.3.Peopleusedknivesforcuttingthings.4.Peopleusedmetalformakingmachines.5.TheyproducesilkinSuzhouandHangzhou.6.TheyspeakEnglishinCanada.

练习：7.TheywritebusinesslettersinEnglish.

8.TheygrowriceinSouthChina.

9.TheyplantmanytreesinNorthChina.

10.LuXunwrotethisbook.

11.Theworkersbuiltsomebridges.12.Wecanusetheboxasatable.

13.Weshouldcleantheclassroomeveryday

7.Theywritebusinessletters下列时态的被动语态构成

1.Lucyiswateringthetrees.

2.Theboywasmendinghisbike.3.Wehavefinishedourcompositions.

看一看想一想看一看想一想Someworkers

arepainting

theroomsnow．Therooms

arebeingpainted

bysomeworkersnow.现在进行时：

S+am/is/are+being+过去分词各大时态的被动语态讲解(同名104)课件I

wasdoing

myhomeworkat8:00lastnight．Myhomework

wasbeingdone(byme)at8:00lastnight.过去进行时：

S+was/were+being+过去分词Iwasdoingmyhomeworkat8We

havemade

twentymorekeys．Twentymorekeys

havebeenmade

byus.现在完成时：

S+have/has+been+过去分词Wehavemadetwentymoreke各种时态的主动语态和被动语态谓语结构对照表时态主动语态被动语态1一般现在时do/doesam/is/are+过去分词2一般过去时didwas/were+过去分词3一般将来时will/begoingto+动词原形will/begoingto+be+过去分词4过去将来时would+动词原形would+be+过去分词5现在进行时am/is/are+现在分词am/is/are+being+过去分词6过去进行时was/were+现在分词was/were+being+过去分词7现在完成时have/has+过去分词have/has+been+过去分词8过去完成时had+过去分词had+been+过去分词9含情态动词情态动词+动词原形情态动词+be+过去分词各种时态的主动语态和被动语态谓语结构对照表时态主动语态被被动语态中的特殊情况1.不及物动词带介词和介词宾语时，在变为被动语态时，仍然要带上介词。e.g.Thestudentslistento

theteachercarefullyinclass.被动句：Theteacherislistenedtocarefullybythestudentsinclass.e.g.Theylookafterthenewstudentsintheschool.被动句：Thenewstudentsarelookedafterbythemintheschool.被动语态中的特殊情况1).Parentsalwayslookafter

theirchildrencarefully.Childrenarealwayslookedafter

carefully.2).Shewillturnoff

thelightafterclass.Thelightwillbeturnedoff

afterclass。3).Shelistenedto

theteacherscarefullysometimes.Theteacherswere

listenedto

carefullysometimes.1).Parentsalwayslookaftert

2.当动词带有复合宾语(有宾补),并且宾补是省去“to”的动词不定式时，在被动语态中应加“to”e.g.Theymakeusdo

allthework.被动句：We

aremadeto

doalltheworkbythem.e.g.Weoften

hearhersing

songs.被动句：She

isoftenheardtosing

songsbyus.e.g.I

sawhimwalk

toschool.被动句：He

wasseento

walktoschoolbyme.特别提示：一些使役动词(let,have,make等)或感观动词(see,hear,watch,中后面接的动词不定式不带to，但改为被动时，要补上to。(记忆口诀：“使感动词”真奇怪，to在句中像妖怪，主动语态to走开，被动语态to回来。”)2.当动词带有复合宾语(有宾补),并且宾补是省去“to使役动词和感观动词主被动语态对照表主动语态被动语态使役动词makesb.dosth.sb.bemadetodosth.havesb.dosth.sb.behadtodosth.letsb.dosth.sb.belettodosth.感观动词seesb.dosth.sb.beseentodosth.watchsb.dosth.sb.bewatchedtodosth.hearsb.dosth.sb.beheardtodosth.noticesb.dosth.sb.benoticedtodosth.go使役动词和感观动词主被动语态对照表主动语态被动语态使役动词m①Thebossmakes

theworkerswork

18hoursaday.Theworkersaremadeto

work

18hoursadaybytheboss.②I

saw

him

enter

thehouse.Hewasseentoenter

thehousebyme.③Theteacherlet

them

leave

theclassroomafterclass.Theywerelettoleave

theclassroombytheteacherafterclass.④Wehear

her

sing

intheroomeveryday.Sheisheardtosing

intheroomeveryday.[注意]当使用see/hear/watchsb.doingsth.时，变为被动语态时，doing保持不变。如：

Isawhimgoing

intotheshop.(主动)Hewasseengoing

intotheshop.(被动)①Thebossmakestheworkers3.当动词带双宾语时(一个宾语是指人，一个是指物)，将其中指人的宾语提前作被动句的主语时，另一个宾语按顺序照抄下来；如是将指物的宾语提前作被动句的主语，在被动句中则指人宾语前应加“to”或“for”。e.g.Hegivesmeaflowereveryday.

被动1Iamgivenaflowerbyhimeveryday.

被动2Aflowerisgiventomebyhimeveryday.e.g.Mymotherboughtmeacomputer.

被动1Iwasboughtacomputerbymymother.

被动2Acomputerwasboughtformebymymother.3.当动词带双宾语时(一个宾语是指人，一个是指物)，将其1.Hepassedmesomepaper.Iwaspassedsomepaperbyhim.Somepaperwaspassedtomebyhim.

2.Heboughtmeapresentformybirthday.Iwasboughtapresentbyhimformybirthday.Apresent

wasboughtformeformybirthdaybyhim.

3.Theyhavegivenmesomegoodadvice.

Ihavebeengivensomegoodadvice.Somegoodadvicehasbeengiventome.1.Hepassedmesomepaper.练习：将下列句子变为被动句。

1.LiLeilistenstohisfathercarefully.

LiLei’sfatherislistenedtocarefullybyLiLei.

2.Themotherlookedafterthebabyintheroom.Thebabywaslookedafterbythemotherintheroom.3.Wetookcareofthethings.Thethingsweretakencareofbyus.4.Theygaveussomework.

Weweregivensomeworkbythem.Someworkwasgiventousbythem.5.Theboymadethemlaughallthetime.

Theyweremadetolaughallthetimebytheboy.6.Mymotherbuysmeabike.

Abikeisboughtformebymymother.Iamboughtabikebymymother.

练习：1.Peopleuseknivesforcuttingthings.Knives____________forcuttingthings.2.Thestudentscleanthewindowsoftheirclassroomtwiceamonth.Thewindowsoftheirclassroom_____________twiceamonth.EXERCISES

areusedarecleaned(变被动语态）1.Peopleuseknivesforcuttin5