The words that we should pay attention to _____ on the blackboard. [ ]A. being written B. are written C. is writing D. writing -九年级英语

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现在完成时

have/has been+过去分词

过去完成时

had been+过去分词

情态动词

情态动词be+过去分词

  • 情态动词的被动语态:
    一、理解含情态动词的被动语态的概念含情态动词的被动语态说明某个被动性动作所反映出的感情和态度。
    初中阶段可用于被动语态的情态动词有“can、may、must、need、should”等,
    分别表示“能够被……”,“可以被……”,“必须被……”,“需要被……“,应该被……”等。

    二、掌握含情态动词的被动语态的不同句式的变换方法含情态动词的被动语态的疑问句、否定句的变化均借助于情态动词完成。
    (一)一般疑问句直接将陈述句被动语态中的情态动词提前。如:
    Mustthisworkbedoneatonce?这项工作必须立即完成吗?
    Shouldyourhomeworkbefinishedbeforesix?你的家庭作业应在六点前完成吗?
    (二)特殊疑问句由疑问词加上一般疑问句被动语态构成。如:
    Whenmustthisworkbedone?这工作必须在什么时候完成?
    Wherecanthelostbookbefound?这本失踪的书能在什么地方被找到?
    (三)反意疑问句借助情态动词构成附加疑问部分。如:
    Thisbridgecanbebuiltnextyear,can'tit?这座桥明年能建成,是吗?
    Thisbookshouldn'tbetakenoutofthelibrary,shouldit?这本书不应被带出图书馆,是吗?
    (四)否定句在情态动词后面加上“not”或“never”即可,但“must”表“必要”时否定式为“needn't”。如:
    Thisworkneedn'tbedoneatonce.这项工作没必要立即做。Thisdustbinshouldn'tbeputhere.这个垃圾箱不应放在这儿。

    三、含情态动词的被动语态的一般疑问句的回答含情态动词的被动语态的一般疑问句的回答应保留原情态动词,
    但“must”表“必须”时,其否定回答应用“needn't”、“need”表“必要”时,其肯定回答应用“must”。如:
    —Shouldmyexercisesbefinishedtoday?我的作业应在今天完成吗?
    —Yes,theyshould.是的,应在今天完成。(No,theyshouldn't.不,不应在今天完成。)
    —Musthisexercisebookbehandedinatonce?他的练习本必须立即上交吗?
    —Yes,itmust.是的,必须立即上交。(No,itneedn't.不,不必立即上交。)
    —Needhebeoperatedonatonce?他必须立即手术吗?
    —Yes,hemust.是的,他必须。(No,heneedn't.不,他不必。)

  • 考点名称:定语从句

    • 定语从句:
      担任定语动能的句子称为定语从句。定语从句在句中的作用相当于形容词,故又称为形容词性从句。
      定语从句所修饰的词叫先行词;定语从句一般用关系代词或关系副词来引导,关系词放在先行词与定语之间起连接作用,同时又作从句中的一部分。

    • 定语从句的分类:
      根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。
      限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去;
      非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。
      1.由that引导的定语从句
      一般情况下that可指人或物,可以代替who,whom和which,在从句中作主语或谓语动词的宾语,但不能作介词的宾语。如:
      The comrade that(who)is speaking at the meeting is an advanced worker.
      正在会上讲话的那个同志是个先进工人。
      Is this the doctor that(whom)you talked about yesterday?
      这就是你们昨天谈论的那位医生吗?
      The letter that(which)I received yesterday was from my father.
      昨天我收到的信是我父亲寄来的。
      2.由who,whom和whose引导的定语从句
      who在从句中作主语,whom在从句中作宾语,whose在从句中作定语。如:
      This is the thief who stole my bike.这就是偷我自行车的那个贼。
      He is the boy whom you wanted to find.他就是你想要找的那个男孩。
      The girl whose mother is a doctor is waiting for you outside.妈妈是个医生的那个女孩在外面等你。
      3.由which引导的定语从句
      which指物,在从句中作主语或谓语动词的宾语。如:
      The book which Mum bought me last week is called“Red Star Over China”.
      妈妈上周买给我的那本书名叫《西行漫记》。
      The house which Lu Xun once lived in is now the Lu Xun Museum.
      鲁迅曾经住过的那所房子现在是鲁迅博物馆。
      4.由where,when和why引导的定语从句
      where在从句中作地点状语,when在从句中作时间状语,why在从句中作原因状语。如:
      I will never forget the day when I joined the League.我永远忘不了我入团的那一天。
      He will go back to the school where he studied next week.下周他要回到他曾经学习过的学校。
      I don't know the reason why he quarreled with Zhang Lin.我不知道他同张琳吵架的原因。
      [注意点]
      关系代词在定语从句中作宾语时,关系代词常省去。如:
      The play(which)I watched just now had been on twice on Channel
      我刚才看的那个戏剧在3频道上已上演了两次。

    • 限定性定语从句:
      1. that即可代表事物也可代表人,which代表事物;
      它们在从句中作主语或宾语,that在从句中作宾语时常可省略关系词,which在从句中作宾语则不能省略。
      而且,如果which在从句中作“不及物动词+介词”的介词的宾语,注意介词不要丢掉,而且介词总是放在关系代词which的前边,但有的则放在它原来的位置
      2. which作宾语时,根据先行词与定语从句之间的语义关系,先行词与which之间的介词不能丢
      3. 代表物时多用which,但在带有下列词的句子中用that而不用which,这些词包括all, anything, much等,这时的that常被省略
      4. who和whom引导的从句用来修饰人,分别作从句中的主语和宾语,whom作宾语时,要注意它可以作动词的宾语也可以作介词的宾语
      5. where是关系副词,用来表示地点的定语从句
      6. when引导定语从句表示时间
      〔注〕值得一提的是,表示时间“time"一词的定语从句只用when引导,有时不用任何关系代词,当然也不用that引导
      By the time you arrive in London, we will have stayed there for two weeks.
      I still remember the first time I met her.
      Each time he goes to besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
      7. whose是关系代词,修饰名词作定语,相当于所修饰成分的前置所有格
      8. 当从句的逻辑主语是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing时,常用there is来引导

      非限定性定语从句
      非限定性定语从句的作用是对所修饰的成分作进一步说明,通常和主句间用逗号隔开,将从句拿掉后其他部分仍可成立
      1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分
      2. 在引导限定性定语从句时,that有时相当于in which, at which, for which或at which
      Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed.
      人们对白日做梦的态度正在改变,这与人们对夜间做梦的看法的变化有非常相似之处。
      I like the music for the very reason that(for which) he dislike it.
      我出于某种原因喜欢这种音乐,而他恰恰与我相反。
      We arrived the day that(on which) they left.
      刚好我们到的那天他们走了。
      3. 有时as也可用作关系代词
      4. 在非限定性定语从句中,不能用that,而用who, whom代表人,用which代表事物

    • 限定性定语从句口诀:
      (口诀一)  
      定语从句真奇妙,  
      关系代(副)词来引导,  
      定语从句分两种,  
      是否限定看逗号。  
      (口诀二)  
      which指物who指人,  
      地点where时间when,  
      that人或物均可,  
      why之前是reason。  
      (口诀三)  
      从句当中作宾语,  
      whom可以代替who,  
      为了句子更简练,  
      关系代词可省去。  
      (口诀四)  
      关系若是表所属,  
      whose用法不可无。  
      除此之外还有啥,  
      whom, which加of。  
      (口诀五)  
      关系代词不一般,  
      介词经常用在前,  
      此时不用that, who,  
      which, whom才安全。 

    • 引导定语从句的关系词:
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      关系词

      词形

      所修饰的先行词 

      在从句中所作的成分 

      关系代词

      who

      主语、宾语、表语

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