宾语从句的用法.doc

宾语从句的用法在复合句中用做宾语的从句叫宾语从句。宾语从句需要注意五大步：1语序无论主句是陈述句还是疑问句，宾语从句都必须使用陈述语序，即“主句引导词宾语从句（主语谓语）”句式。根据引导词在从句中所担任的不同成分，可分为以下四种：1）引导词谓语。引导词在从句中做主语。常见的引导词有： who，what，which等。如：Could you tell me who knows the answer，please？你能告诉我谁知道答案吗？The small children dont know what is in their stockings这些小孩子不知道袜子里有什么东西？2）引导词名词谓语。引导词在从句中做主语的定语。常见的引导词有：whose，what，which，how many，how much等。如：He asked whose handwriting was the best in our class他问我们班上谁的书法最好。The teacher asked us how many people there were in the room老师问我们房间里有多少人。3）引导词主语谓语。引导词在从句中做宾语、状语或表语。常见的引导词有：who（m），what，which，how many，how much， when，why，how，where，if whether（在句中不充当任何成分）等。如：He hasnt decided if hell go on a trip to Wuxi他还没决定是否去无锡旅行。Could you tell me what I should do with the money ？你能告诉我我如何处理这笔钱吗？4）引导词名词主语谓语。引导词在从句中做宾语或表语的定语。常见的引导词有：what，which，how many，how much，how等。如：Do you know which class he is in ？你知道他在哪个班吗？She asked me if I knew whose pen it was她问我是否知道这是谁的钢笔。2引导词1）当由陈述句充当宾语从句时，用that引导，that无词义，在口语或非正式文体中常省略。如：He said that he could finish his work before supper他说他会在晚饭前完成工做。2）当由一般疑问句充当宾语从句时，用if或whether引导，意为“是否”。如：I dont know if whether he still lives here after so many years我不知道这么多年后他是否还住在这儿。但在下列情况下只能用whether：在具有选择意义，又有or或or not时，尤其是直接与or not连用时，往往用whether。如：Let me know whether he will come or not（Let me know whether or not he will come）让我知道他是否能来。I dont know whether he does any washing or not（I dont know whether or not he does any washing）我不知道他洗不洗衣服。I wonder whether we stay or whether we go我不知道我们是去还是留。在介词之后用whether。如：Im interested in whether he likes English我关心的是他是否喜欢英语。Were thinking about whether we can finish the work on time我们正在考虑是否能按时完成这项工做。I worry about whether I hurt her feelings我担心是否伤了她的感情。在不定式前用whether。如：He hasnt decided whether to visit the old man他尚未决定是否拜访那位老人。I dont know whether to go我不知去否。whether置于句首时，不能换用if。如：Whether this is true or not，I cant say这是否真的我说不上来。引导主语从句和表语从句时宜用whether。如：Whether she will come or not is still a question她是否能来还是个问题。The question is whether we can catch the bus问题是我们能否赶上公共汽车。若用if会引起歧义时，则用whether。如：Please let me know if you like the book可理解为：aPlease let me know whether you like the book请告诉我你是否喜欢这本书。bIf you like the book，please let me know你如果喜欢这本书，请告诉我。3）如果宾语从句原来是特殊疑问句，只需用原来的特殊疑问词引导。如：Could you tell me why you were late for the meeting this morning？你能告诉我今天早上你为什么开会迟到吗？3.人称宾语从句的人称有时要注意发生适当的变化。4时态含宾语从句的复合句，主、从句谓语动词的时态呼应应包括以下三点内容：1）如果主句的谓语动词是一般现在时，从句的谓语动词可根据需要，选用相应的任何时态。如：I dont know when he will come back我不知道他将何时回来。He tells me that his sister came back yesterday他告诉我他姐姐昨天回来了。2）如果主句的谓语动词是过去时，宾语从句的谓语动词只可根据需要，选用过去时态即一般过去时、过去进行时、过去将来时或过去完成时的某一种形式。如：The children didnt know who he was孩子们不知道他是谁。He asked his father how it happened他问他父亲这件事是如何发生的。3）如果宾语从句所表示的是客观事实、普遍真理、自然现象或习惯性动做等，不管主句用什么时态，从句时态都用一般现在时。如：The teacher said that the earth goes round the sun老师说地球绕着太阳转。5.标点符号句子的标点符号要根据主句来确定。6注意：if和when既可以引导宾语从句，也可以引导状语从句，应注意它们在两种从句中的意思和用法的不同。if和when引导宾语从句时，分别意为“是否”和“何时”，其时态应和主句时态相呼应；它们引导状语从句时，意思分别为“如果，假如”和“当时候”，当主句时态是一般将来时时，其时态用一般现在时。它们常常放在含有状语从句和宾语从句的题干中进行综合考查。如：Do you know when he will come back tomorrow ？你知道他明天什么时候回来吗？Sorry，I dont knowWhen he comes back，Ill tell you对不起，不知道。当他回来了，我将告诉你。I dont know if he will come我不知道他是否会来。He will come if it doesnt rain如果不下雨，他会来的。简化宾语从句常用六法同学们常会遇到把含有宾语从句的复合句转化为简单句，使其与原句意思相同（或相近）的试题。下面就介绍几种常用的简化宾语从句的方法：方法一：当主句谓语动词是hope， decide， wish， choose， agree， promise等，且宾语从句的主语与主句主语一致时，宾语从句可简化为不定式结构。例如：Li Ming hopes he will be back very soon. Li Ming hopes to be back very soon.We decided that we would help him. We decided to help him.方法二：当主句谓语动词是know， learn， remember， forget， tell等动词，且主句主语与从句主语一致时，宾语从句可简化为“疑问词+不定式”结构。例如：She has forgotten how she can open the window. She has forgotten how to open the window.注：当主句谓语动词是tell， ask， show， teach等动词，且后带双宾语，从句主语和间接宾语一致时，宾语从句可简化为“疑问词+不定式”结构。例如：Could you tell me how I can get to the station？ Could you tell me how to get to the station？方法三：当主句的谓语动词是order（命令），require（需要）等时，如果主句和从句的主语不一致，宾语从句可简化为“名词（代词）+不定式”结构。例如：The headmaster ordered that we should start at once. The headmaster ordered us to start at once.方法四：某些动词后的宾语从句，可以用介词加动名词（短语）等其他形式简化。例如：He insisted that he should go with us. He insisted on going with us.The poor boy doesnt know when and where he was born. The poor boy doesnt know the time and the place of his birth.方法五：某些动词后面的宾语从句可转化为“宾语+V-ing形式（做宾语补足语）”结构。例如：Liu Ping found that there was a wallet lying on the ground. Liu Ping found a wallet lying on the ground.方法六：动词seem后的宾语从句，也可以用不定式（短语）来简化，但句型需要进行适当的变化。例如：It seemed that the boys were going to win. The boys seemed to win.除上述方法外，还有一些特殊句式的转化。例如：I found that it was difficult to learn English well. I found it difficult to learn English well.Soon we found that the ground was covered with thick snow. Soon we found the ground covered with thick snow.They found that the box was very heavy. They found the box very heavy初中英语宾语从句语法专项精选试题习题(一)1 The girls asked if they _ some food and drink with them.A. took B. take C. takes D. will take2 Catherine said that she _ to Guangzhou.A. has never gone B. had never gone C. has never been D. had never been3 The students want to know whether they_ dictation today.A. had B. has . C. will have D. are4 She asked Linda if_ go and get some.A. could she B. she could C. she can D. she may5 Linda said the moon_ round the earth.A. travelled B. has travelled C. travells D. had travelled答案:1-5 A D C B C习题(二)1 Can you tell me_ you were born, BettyA. who B. what C. when D. that2 I dont know _ they have passed the exam.A. what B. if C. when D. where3 I hardly understand. _ he has told me.A. that B. what C. which D. who4 She didnt know_ back soon.A. whether he would be B. if would he be C. he will be5. I dont know _ he still lives here after so many years.A. whether B where C. what D. when定语从句的用法定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。例：Those who are willing to end the party , sign your 定语从句是由关系代词或关系副词引导的从句，其做用是做定语修饰主句的某个名词性成分，相当于形容词，所以又称为形容词性从先行词定语句一般放在先行词的后面.）关系词引导定语从句的关联词称为关系词，关系词有关系代词和关系副词。关系代词有that, which, who, whom, whose, as等，绝对没有what；关系副词有where, when, why等。关系词常有3个做用： 连接作用，引导定语从句。 代替主行词，甚至可能是主句中的一部分或者整个主句。 在定语 注：关系代词有主语、宾语之分。一般whom作为宾语。关系代词在从句中做主语，宾语，表语，定语等，关系副词在从句中做地点状语。定语定语用来限定、修饰名词或代词起修饰、限定做用的词、短语（动词不定式短语、动名词的）表示容词担任，此外，名词，代词，数词，分词，副词，不定式以及介词短语也可以来担任，也可以由一个句子来担任。单词做定语时通常放在它所修饰的词之前，做前置定语 被定语从句修饰的名词、代词称为先行词。如The man The book关系代词所代替的先行词是人或物的名词或代词，并在从句中充当主语、宾语、定语等成分。关系代词在定语从句中做一定的成分1,who, whom, that这些词代替指人，whom做宾语指人，that既可做主语又可做宾语（做宾语可以省略），可以指人也可以指物。在从句中所起做用如下： (1) Is he the man who/that wants to see you? 他是那个想见你的男人吗？（who/that在从句中做主语） (2) He is the man whom/ that I saw yesterday. 他就是我昨天见的那个人。（whom/that在从句中做宾语） （3）The man whom you spoke to just now is our English teacher 你刚刚说话的那个男人是我们的英语老师(只用做定语, 等，做宾语时可以省略，例如： (1)The building that is being built will be a hospital.（which / that在从句中做主语）