一般现在时、一般过去时、一般将来时被动语态
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时态的公式
1.一般过去时:did
2.一般将来时:will+do/be going to+do
3.一般现在时:do/does
4.现在进行时;be+doing
5.现在完成时:have/has+done
6.现在完成进行时:have/has+been+doing
7.过去进行时:was/were+doing
8.过去完成时:had+done
9.过去完成进行时:had been+doing
10.将来进行时:will+be+doing
11.将来完成时:will+have+done
12.将来完成进行:will+have+been+doing
13.一般过去将来时:would+do或者was/were+going to+do
14.过去将来进行时:would+be+doing
15.过去将来完成时:would+have+done
16.过去将来完成进行时:would+have+been+doing
被动语态
1)一般现在时:am/is/are+done
2)一般过去时:was/were+done
3)一般将来时:will+be+done
4)过去将来时:would+be+done
5)现在进行时:am/is/are+being+done
6)过去进行时:was/were+being+done
7)将来进行式:will+be+being+done
8)现在完成时:have+has+been+done
9)过去完成时:had+been+done
10)将来完成时:will+have+been+done。
五种常用时态的被动语态:1)一般现在时的被动语态:am/is/are + doneThe house is cleaned by my mother every morning.我妈妈每天早上都打扫房子。
2)一般过去时的被动语态:was/were + doneI was beaten by someone last night.我昨晚被人打了。
3)一般将来时的被动语态:will be + doneThis boy will be expelled from the football team tomorrow.这个男孩明天将被开除出足球队。
4)完成时的被动语态:has/have/had been + doneNew Concept English has been translated into many languages.《新概念英语》已经被翻译成了许多种语言。
5)进行时的被动语态:be being + doneMy bicycle is being repaired by a garage.我的自行车正在一家修理厂里维修。
标题Not for jazz总结for的用法:1)为:I bought a book for you.我为你买了一本书。
2)因为:Something fell in,for I heard a splash.一定有东西掉下去了,因为我听见扑通一声。
4)适合:Not for jazz=It's not suitable to play jazz on the clavichord.古钢琴不适合演奏爵士乐。
Question:What happened to the clavichord?to后面加宾语,表示其身上发生了什么事,即动作的目标、对象。
What happened to you?你怎么了?(在你身上发生了什么事?)(1)否定句与疑问句的被动语态We don’t believe her.我们不信她的话。
被动语态的各种时态形式有一般现在时、一般过去时、一般将来时、过去将来时。
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。
用于被动语态的情景: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)。
My bike was stolen last night.借助被动的动作突出动作的承受者。
I was given ten minutes to decide whetherI should accept the offer.为可更好地安排了。
The weli-known person got on the bus andwas immediately recognized by people. ( 一个主语就够了)一般现在时:S(主语) +am/is /are+过去分词We can see some pictures on the wall. 我们能看到墙上的画。
Is he always play the football with the classmates?他经常和朋友踢足球吗?Does she often talkwith you?她经常和你说话吗?Does he takes a long walk every nights?他经常饭后散步吗?He likes misic very much.他很喜欢音乐。
一般过去时:S+was/were +过去分词He played tennis last week.上星期他们打过网球。
I watched TV yesterday.我昨天看电视了。
I didn''t know you were in Paris.我不知道你在巴黎。
He didn’t have classes this morning.他今天上午没上课。
被动语态的10种时态形式一、一般现在时的被动语态:被动语态的一般现在时表示主语在现在时被动地接受动作或承受行为。
构成为:be + done。
例如:1. The book is read by me.(这本书被我阅读。
)2. The door is locked by him.(门被他锁上了。
)二、一般过去时的被动语态:被动语态的一般过去时表示主语在过去时被动地接受动作或承受行为。
构成为:was/were + done。
例如:1. The cake was eaten by them.(蛋糕被他们吃掉了。
)2. The letter was written by me.(信被我写了。
)三、一般将来时的被动语态:被动语态的一般将来时表示主语在将来时被动地接受动作或承受行为。
构成为:will be + done。
例如:1. The report will be sent by her.(报告将会被她发送。
)2. The package will be delivered tomorrow.(包裹将在明天被送达。
)四、现在进行时的被动语态:被动语态的现在进行时表示主语在现在进行时被动地接受动作或承受行为。
构成为:am/is/are being + done。
例如:1. The car is being washed by the workers.(汽车正在被工人清洗。
)2. The project is being discussed by the team.(项目正在被团队讨论。
)五、过去进行时的被动语态:被动语态的过去进行时表示主语在过去进行时被动地接受动作或承受行为。
构成为:was/were being + done。
例如:1. The house was being renovated last month.(房子上个月正在进行装修。
)2. The document was being translated by the intern.(文件正在被实习生翻译。
语态是动词的一种形式,表示句子中主语和谓语动词的关系,主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者。
只有及物动词才能用于被动语态。
一.被动语态的时态:1.一般现在时的被动语态:am /is/ are +动词的过去分词2.一般过去时的被动语态:was /were +动词的过去分词3.一般将来时的被动语态:will be +动词的过去分词4.现在进行时的被动语态:am /is /are +being +动词的过去分词5.现在完成时的被动语态:have /has +been +动词的过去分词6.情态动词的被动语态:情态动词+ be +动词的过去分词二.被动语态的基本用法:(1) 需要强调动作的承受者时The Great Wall is enjoyed by millions of people all over the worldEnglish is widely spoken in the world now.(2) 不知道或没必要指出动作的执行者时Mr. Wang is invited to the meeting today .The problem is dealt with now .(3) 当说话人需要强调客观时It is said that she was a beauty when she was young .三.主动主动语态变被动语态的变法:口诀:宾变主,主变宾,谓变be done ,时不变,数格必须随被变。
注:1.主动、被动的时态要一致。
2.主动、被动的句式要一致。
3.变成的被动语态的主语与谓语在单复数上保持一致。
语态转换不被动语态的步骤1, 把原主动句中的宾语转换为被动语态的主语2, 把动词改为被动语态形式即"be+过去分词"。
3, 原来主动语态句子中的主语,如果需要就放在by的后面以它的宾格形式出现(因为by是介词,后面需跟宾格作介词的宾语。
成才教育九年级语法被动语态专项练习九年级英语上册课本第七、八、九模块分别学习了一般现在时、一般过去时和一般将来时的被动语态;被动语态的基本构成形式:be + 动词过去分词;主动语态强调动作的发出者,而被动语态则强调动作的承受者;例如:Children love this book.主动语态,强调孩子们This book is loved by children.被动语态,强调书一、一般现在时的被动语态:一般现在时被动语态各类句式:1、肯定句:主语+ am/ is /are + 动词过去分词+ by + 动作执行者This song is still loved by many young people today.2、否定句:主语+ am/ is /are + not + 动词过去分词+ by + 动作执行者This camera is not made by Japan.3、一般疑问句:Am/ Is/ Are + 主语+ 动词过去分词+ by + 动作执行者Is this film called Snow White4、特殊疑问句:特殊疑问词+ Am/ Is/ Are + 主语+ 动词过去分词+ by + 动作执行者How many people are mentioned in the conversation注意主语与an is are 的位置,可能会根据特殊疑问词不同进行互换二、一般过去时被动语态:成才教育,助你成功一般过去时被动语态肯定句式结构:主语+ was/were + 动词过去分词+ by + 动作执行者其他句式与一般现在时类似;三、一般将来时被动语态:成才教育,助你成功一般将来时被动语态肯定句式结构:主语+ will/ is going to /are going to + be + 动词过去分词+ by + 动作执行者其他句式结构与一般现在时类似;一、选择专项训练:anewlibrary_____inourschoollastyearA.Is;builtB.Was;builtC.Does;buildD.Didbuild2.Anaccident____onthisroadlastweek.A.hasbeenhappenedB.washappenedC.ishappenedD.happened棉花____inthesoutheastofChina.A.isgrownB.aregrownC.growsD.growfar,themoon____bymanalready.visitedB.willbevisitedC.hasbeenvisitedD.wasvisitedtalkonChinesehistory_____intheschoolhallnextweek.A.isgivenB.hasbeengivenC.willbegivenD.givesmanytrees____thisyearA.areplantedB.willplantC.havebeenplantedD.plantedlotofthings____bypeopletosavethelittlegirlnow.A.aredoingB.arebeingdoneC.hasbeendoneD.willbedone___thiskindofcomputers______--Lastyear.A.did;useB.was;usedC.is;usedD.are;usedGreatWall____allovertheworld.A.knowsB.knewC.isknownD.wasknown_____thisbook_____A.did;writtenB.was;writtenbyC.did;writtenD.was;writtenstory_____byGrannyyesterday.A.wastoldusB.wastoldtousC.istoldusD.toldus monkeywasseen_____offthetree.A.jumpB.jumpsC.jumpedD.tojumpschoolbag___behindthechair.A.putsB.canbeputC.canbeputtedD.canputpeople____well.A.looksafterB.mustbelookedafterC.mustlookafterD.lookedafterteacher______carefully.A.shouldbelistenedtoB.shouldbelistenC.belistenedD.islistened1.Rubbish_______intotheriverinordertoprotecttheenvironment.A.mustthrowB.mustn’tbethrownC.can’tbethrownD.maybethrown2.Afterthelights________,welefttheclassroom.A.turnedoffB.isturnedoffC.wereturnedD.wereturnedoff3.Whentheaccident_________,weweregoingbythehospital.A.takeplaceB.weretakenplaceC.werehappenedD.happened4.Aknife_______cutthings,likeapples,watermelons.A.isusedtoB.isusedforedtoeto5.MrZhang_______eatingShandongfoodnow.A.wasusedB.isusedtoedtoD.willbeusedfor6.JustnowTomwasseen______withJames.A.tofight.B.fightingC.fightD.fought.7.Thebrokenchairsneed_______atonce.A.repairedB.toberepairedC.beingrepairedD.repair8.______myTV_______hereA.Can,berepairedB.Is,canrepairedC.Can,repairedD.Can,repair9.When_____thebridge______A.did,buildB.was,builtC.did,setD.was,build10._____manypollutedthings_______outofthecityyetA.Are,beingmovedB.Have,beenmovedC.Have,movedD.Did,move11._____thefloor______bythestudentsondutyatthemomentA.Are,cleanedB.Is,sweptB.C.Is,beingsweptD.Does,sweep1. Oneortwoman-madesatellites______inourcountryeveryyear.A.havebeensentupB.willbesentupC.issentupD.aresentup2. OurTVset_____yesterday.A.isrepairedB.wasrepairedC.hadbeenrepairedD.wouldberepaired3. Anewbuilding_____inourschoolnextyear.A.willbebuiltB.isbuiltC.isbeingbuiltD.hasbeenbuilt4. Manybooksonscience_____sinceIwenttocollege.A.wereboughtB.havebeenboughtC,willbeboughtD.arebought5. AwonderfulEnglishtalk_____byMrLiutomorrow.A.hasbeengivenB.isgivenC.isbeinggivenD.willbegiven6. How_____theGreatPyramid金字塔____manyyearsagowithoutmodernmachines.A.is…builtB.would…bebuiltC.have…beenbuiltD.was…built7. Foodandclothes____bywomen.AisoftentalkaboutB.areoftentalkedC.areoftentalkedaboutD.oftentalkedabout8. _____thework_____yetA.is…finishedB.Will…befinishedC.Has…beenfinishedD.Would…befinished9. Suchfilms_____bychildrenlikeyou.A.mustbenotseenB.mustnotbeseeC.mustnotseenD.mustnotbeseen10. Trees_____inwinterbutinspringA.notcanbeplantedB.canbenotplantedC.can’tbeplantedD.cannotbeplant11. Thiskindofcars____inJapantenyearsago.A.canonlybemadeB.couldonlymadeC.becouldonlymadeD.couldonlybemade12. Jackoftendoesthingsfoolishly,sohe____sometimes_____byothers.A.is…laughedB.is…laughedatC.was…laughedD.has…beenlaughedat13. Thebear______tothezootomorrowmorning.A.maybesendB.mayissentC.maybesentD.ismaysent14. Inthepasttenyear,alotofnewbuildings_____inourcity.A.areputupB.haveputupC.havebeenputD.havebeenputup15. Suchfilms_____bychildrenlikeyou.A.mustbenotseenB.mustnotbeseeC.mustnotseenD.mustnotbeseen二、用所给动词的正确时态和语态填空;1. Sometopstudents___ __sendtostudyinforeigncountriesonceayear.2.Moreandmoreschools___________buildherelater.3.WherearetheapplesIthinkthey____ ___eatbythoseboys.4.Manynewthings__________inventinthelasttenyears.5.Alltheshoes__________selloutlastweek.6.Howlong_______thebook_________cankeep7.Tom_______hidehisshoesbehindthetree.Sothey_________notfindeasily.8.Thebabieshere_________takegoodcareofeveryday.9.We______opentheboxandtwonewcoats______seeinit.10.Hisnewnovel_______finishnextweek.。
初中常考词汇举例的被动语态句子,分为一般现在时、一般过去时、一般将来时、现在进行时和过去进行时五种时态:1.一般现在时:•English is taught in most schools around the world. → 英语在全世界大多数学校都有教学。
•Cars are driven on the right side of the road in the United States. → 在美国,车辆在马路的右侧行驶。
•The sun is shining brightly this morning. → 今天早晨,太阳在灿烂地照耀着。
•Coffee is served at breakfast time. → 在早餐时间提供咖啡。
•Many homes are heated with central air conditioning. → 许多家庭使用中央空调供暖。
1.一般过去时:•The house was built in 1980. → 这所房子在1980年建成。
•They were all tired after the long day at the office. → 在办公室度过了漫长的一天后,他们都感到疲惫。
•The homework was finished last night. → 家庭作业是昨晚完成的。
•The classrooms were decorated for the holidays. → 教室为假期进行了装饰。
•The email was sent before 5 PM. → 那封邮件在下午5点前发送了。
1.一般将来时:•The movie will be released next month. → 这部电影将在下个月上映。
•They will vi sit their grandparents next week. → 他们将在下周拜访他们的祖父母。
七种被动语态形式1) 一般现在时的被动语态 (am/is/are+ 过去分词)如: The work is done during two days.2) 一般过去时的被动语态 (was/were+ 过去分词)如: He was sent to the hospital immediately after the accident.3) 一般将来时的被动语态 (will/shall + be + 过去分词或 + be going to + be + 过去分词)如: The work will be finished soon.4) 现在进行时的被动语态 (is/am/are + being+ 过去分词)如: The bridge is now being constructed.5) 现在完成时的被动语态 (have/has +been + 过去分词)如: The radio has been repaired when we phoned the shop.6) 带情态动词的被动语态 (情态动词 + be + 过去分词)如: This can be done in a few minutes.7) 动词不定式的被动式 (to be + 过去分词)如: It is an honor for me to be asked to speak here.现在完成时的被动语态其构成是: have/has been + done现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响,。
如:1. The dirty clothes have been washed.脏衣服都已经洗了。
2. The plan has been studied by the experts for three times.这项计划已经由专家研究过三次了。
现在完成时:表示从过去持续到现在,还可能继续持续下去的动作,往往和表示一段时间的状语(for+一段时间, since…, )等连用,或用于how long 句型中1. 主语是行为动作的承受者。
英语中的被动语态结构在英语中,被动语态用于强调动作的接受者而不是执行者。
被动语态的结构由助动词"be" 的不同形式加上动词的过去分词构成。
以下是被动语态的常见结构:1.一般现在时的被动语态:主语+ am/is/are + 过去分词例如:•Active: They clean the house every day. Passive: The house iscleaned every day by them.2.一般过去时的被动语态:主语+ was/were + 过去分词例如:•Active: He fixed the car yesterday. Passive: The car was fixed by him yesterday.3.一般将来时的被动语态:主语+ will be + 过去分词例如:•Active: They will finish the project next week. Passive: The project will be finished by them next week.4.现在进行时的被动语态:主语+ am/is/are + being + 过去分词例如:•Active: She is writing a letter. Passive: A letter is being written by her.5.过去进行时的被动语态:主语+ was/were + being + 过去分词例如:•Active: They were painting the house. Passive: The house was being painted by them.6.现在完成时的被动语态:主语+ has/have been + 过去分词例如:•Active: We have already eaten dinner. Passive: Dinner has already been eaten by us.需要注意的是,某些动词不常用被动语态,或者其含义在被动语态中有所改变。
被的一般去、一般在、一般将来(一)被构(Passive Voice)构 : be +一般在的被---am/are /is +的去分done一般去的被---was/were +done一般将来的被 ---will be + done情的被 ---can/must/may/should + be +done主句与被句之的We bought some books.主Some book s were bought( by us )主介 +被( 一) 主句被句所遵循的 3 个步:1.主 : 把原主句中的被句的主 .2.被 : 把被形式即 be + 去分,并注意其人称和数随主的化,而的保持不。
3.主 + by:原主句的主如需要放在 by 后面以它的格形式出(注代的格 ), 如不需要可省略。
( 二) 句式 :将被句中所的助be, will, have, can, must⋯⋯后加 not 或提到句首 .waters the flowers every day.被 : The flowers _____ _______ ____father every day.否定 : The flowers _______ _______ _______father⋯句及答 :_______the flowers_______ _______father every dayYes, _______ _________.2. He cut the old tree yesterday.被 : The old tree ______ _____ _____ ______ yesterday.否定 : The old tree _____ _____ _____ ______....问句及答 : _______the old tree ____ ____ _______ yesterday No, ________ ________.3. They will have a class meeting tomorrow.变被动 : A class meeting_______ _______ ________ by them tomorrow.划线提问 : _______ _______the class meeting _______ _______ by them 4. We should do something to stop the pollution.变被动 : _______ ________ ________ ________to stop the pollution.划线提问 : ________ _________ ______ _________to stop the pollution 5. Do people use Chinese only in China变被动 : _______Chinese_______ only in China ________people6. The lazy boy didn’t wash clothes yesterday.变被动 : Clothes __________ ________ by the lazy boy yesterday.一般现在时1He often helps me in English.____________________________________2Lucy does her homework in the evening.____________________________________3They make shoes in that factory.____________________________________you water the flowers every day____________________________________一般过去时1 We built our school 95 years ago.____________________________________2They planted many trees last year.____________________________________3He didn ’ t take the photo in 2003.____________________________________you finish your homework____________________________________一般将来时1We will hold our National Games in Jinan.____________________________________2 I will invite my teacher to the party.____________________________________3 He won’ t finish his homework in an hour.____________________________________4We must clean the classroom every day.____________________________________5Parents should allow the teenagers to choose their own clothes.____________________________________6Uncle Wang can ’t mend his bike .含情____________________________________一、是由不及物加介或副构成的。
成才教育九年级语法(被动语态)专项练习九年级英语上册课本第七、八、九模块分别学习了一般现在时、一般过去时和一般将来时的被动语态。
被动语态的基本构成形式:be + 动词过去分词。
主动语态强调动作的发出者,而被动语态则强调动作的承受者。
例如:Children love this book.(主动语态,强调孩子们)This book is loved by children.(被动语态,强调书)一、一般现在时的被动语态:一般现在时被动语态各类句式:1、肯定句:主语+ am/ is /are + 动词过去分词(+ by + 动作执行者)This song is still loved by many young people today.2、否定句:主语+ am/ is /are + not + 动词过去分词(+ by + 动作执行者)This camera is not made by Japan.3、一般疑问句:Am/ Is/ Are + 主语+ 动词过去分词(+ by + 动作执行者)Is this film called Snow White?4、特殊疑问句:特殊疑问词+ Am/ Is/ Are + 主语+ 动词过去分词(+ by + 动作执行者)How many people are mentioned in the conversation?(注意主语与an is are 的位置,可能会根据特殊疑问词不同进行互换)二、一般过去时被动语态:(成才教育,助你成功!)一般过去时被动语态肯定句式结构:主语+ was/were + 动词过去分词(+ by + 动作执行者)其他句式与一般现在时类似。
三、一般将来时被动语态:(成才教育,助你成功!)一般将来时被动语态肯定句式结构:主语+ will/ is going to /are going to + be + 动词过去分词(+ by + 动作执行者)其他句式结构与一般现在时类似。
一、选择专项训练:( )1._____ a new library _____ in our school last year?A. Is; builtB. Was; builtC. Does; buildD. Did build( )2. An accident ____ on this road last week.A. has been happenedB. was happenedC. is happenedD. happened( )3.Cotton(棉花) ____ in the southeast of China.A. is grownB. are grownC. growsD. grow( )4.So far, the moon ____ by man already.A.is visitedB. will be visitedC. has been visitedD. was visited ( )5.A talk on Chinese history _____ in the school hall next week.A. is givenB. has been givenC. will be givenD. gives( )6.How many trees ____ this year?A. are plantedB. will plantC. have been plantedD. planted( )7.A lot of things ____ by people to save the little girl now.A. are doingB. are being doneC. has been doneD. will be done ( )8.--When ___ this kind of computers______? --Last year.A. did; useB. was; usedC. is; usedD. are; used( )9.The Great Wall ____ all over the world.A. knowsB. knewC. is knownD. was known( )10.Who _____ this book _____?A. did; writtenB. was; written byC. did; writtenD. was; written( )11.A story _____ by Granny yesterday.A. was told usB. was told to usC. is told usD. told us( )12.The monkey was seen _____ off the tree.A. jumpB. jumpsC. jumpedD. to jump( )13.The school bag ___ behind the chair.A. putsB. can be putC. can be puttedD. can put( )14.Older people ____ well.A. looks afterB. must be looked afterC. must look afterD. looked after( )15.Our teacher ______ carefully.A. should be listened toB. should be listenC. be listenedD. is listened( ) 1. Rubbish _______ into the river in order to protect the environment.A. must throwB. mustn’t be thrownC. can’t be thrownD. may be thrown( ) 2. After the lights ________, we left the classroom.A. turned offB. is turned offC. were turnedD. were turned off( ) 3. When the accident _________, we were going by the hospital.A. take placeB. were taken placeC. were happenedD. happened( ) 4. A knife _______ cut things, like apples, water melons.A. is used toB. is used forC. used toD. use to( ) 5. Mr Zhang _______ eating Shandong food now.A. was usedB. is used toC. used toD. will be used for( ) 6. Just now Tom was seen ______ with James.A. to fight.B. fightingC. fightD. fought.( ) 7. The broken chairs need _______ at once.A. repairedB. to be repairedC. being repairedD. repair( ) 8. ______ my TV _______ here ?A. Can, be repairedB. Is , can repairedC. Can, repairedD. Can, repair( ) 9. When _____ the bridge ______ ?A. did, buildB. was, builtC. did, setD. was, build( ) 10. _____ many polluted things _______ out of the city yet?A. Are, being movedB. Have, been movedC. Have, movedD. Did, move( ) 11. _____ the floor ______ by the students on duty at the moment?A. Are, cleanedB. Is, swept B.C. Is, being sweptD. Does, sweep( )1. One or two man-made satellites ______ in our country every year.A. have been sent upB. will be sent upC. is sent upD. are sent up( )2. Our TV set _____ yesterday.A. is repairedB. was repairedC. had been repairedD. would be repaired( )3. A new building _____ in our school next year.A. will be builtB. is builtC. is being builtD. has been built( )4. Many books on science _____ since I went to college.A. were boughtB. have been bought C, will be bought D. are bought( )5. A wonderful English talk _____ by Mr Liu tomorrow.A. has been givenB. is givenC. is being givenD. will be given( )6. How _____ the Great Pyramid (金字塔)____ many years ago without modern machines.A. is…builtB. would…be builtC. have…been builtD. was…built( )7. Food and clothes ____ by women.A is often talk about B. are often talked C. are often talked about D. often talked about ( )8. _____ the work _____ yet ?A. is…finishedB. Will…be finishedC. Has …been finishedD. Would…be finished ( )9. Such films _____ by children like you.A. must be not seenB. must not be seeC. must not seenD. must not be seen( )10. Trees _____ in winter but in springA. not can be plantedB. can be not plantedC. can’t be plantedD. can not be plant ( )11. This kind of cars ____ in Japan ten years ago.A. can only be madeB. could only madeC. be could only madeD. could only be made( ) 12. Jack often does things foolishly, so he ____ sometimes _____ by others.A. is…laughedB. is …laughed atC. was…laughedD. has…been laughed at( )13. The bear ______ to the zoo tomorrow morning.A. may be sendB. may is sentC. may be sentD. is may sent( )14. In the past ten year, a lot of new buildings _____ in our city.A. are put upB. have put upC. have been putD. have been put up( )15. Such films _____ by children like you.A. must be not seenB. must not be seeC. must not seenD. must not be seen。