02 名词性从句第二讲【导学案】-2021年高考英语语法之名词性从句精讲精练
专题语法：名词性从句
第二讲
【学习目标】
1、掌握名词性从句的种类，形式及其句法功能。
2、掌握四种从句的特殊注意事项。
【重点难点】
重点：四种名词性从句引导词的选择。
难点：正确填写引导词。
【导学流程】
一、导：<回顾旧知>
回顾上节课重点
名词性从句分为？
名词性从句的语序？
名词性从句的时态？
二、四种从句讲解及注意事项
1.主语从句。就是在整个句子中作主语的从句。
①谓语动词通常用第三人称单数。
What he meant clear enough.
Whether it will do us harm (remain) to be seen.
注意：what引导主语从句时，谓语动词的单复数形式遵循意义一致原则。（看后面）What he wanted _________(be) food.
What he wanted _________ (be) some trusted friends.
②主语从句常被后置，前面用形式主语。
It is clear enough what he meant.
用形式主语的常用句型。
◆it is + adj. + that…
It’s necessary that the dogs be chained up锁住for the night.
◆it is + n. + that…
It is a pity that you missed the exciting football match.
◆it is + 过去分词+that…
It is said /reported /announced /believed/ hoped/ felt /decided that…
It is said that an earthquake hit Japan.
◆it +v. (happen, occur, strike, matter, appear等) + that…
It never occurred to me that you would refuse me.
[基础练习]——单句语法填空
1.Every year, makes the most beautiful kite will win a prize in the Kite Festival.
2.It is said he is focusing on a book on space exploration. But when it will come out remains in the air.
3.Your support is important to our work. you can do helps.
4.we understand things a lot to do with we feel.
2.宾语从句。就是在及物动词、介词，以及系表结构后作宾语的从句。
He asked me where I was going.
She was not happy at what he had said.
We are sure that we shall succeed.
①当主句谓语动词是think, believe, suppose, expect等，而宾语从句是否定意思，同时主句的主语是第一人称时，常否定主句而不否定从句。即：否定前移。
I don’t think I know you.
②在动词consider, find, feel, keep, make, judge后，常用形式宾语it，再加宾补，再加宾语从句，如：
I made it clear that I objected to the proposal.
I think it best that you should stay here.
③在动词take, enjoy, hate, like, love, appreciate, don’t mind 等之后，先加形式宾语it，再跟宾从。
I take it that he is not interested in the book.
④doubt 后接宾语从句，肯定句用if/whether，否定和疑问句用that引导。
⑤在insist, order, command, suggest, recommend, advise, propose, require, ask, demand, request(即一坚持，二命令，四建议，四要求)，从句谓语动词“should+V原”
【基础练习】——单句语法填空
1.Jane moved aimlessly down the tree-lined street, not knowing she was heading.
2.I insisted that he should (released).
3.I doubt he will show up on time.
4.I consider it necessary we should spend more time practicing spoken English.
5.翻译：如果你能给我一些建议，我将不胜感激。
3.表语从句在系动词be, sound, look, seem, appear, feel等后作表语的从句。值得一提的是，as if, as though和because也可引导表语从句。但if不能引导表语从句。
At sunrise, the sun looks as if it is coming up.
My head feels as though it will split.分离
注：①This is because+原因/This is why+结果
His bike broke down. This is why he was late.
②The reason (why…)is that… ……的原因是……
The reason why he was late is that his bike broke down.
[基础练习]——单句语法填空
1.By boat is the only way to get here, which is we arrived.
2.The most pleasant thing of the rainy season is one can be entirely free from dust.
3.“Every time you eat a sweet, drink green tea.” This is my mother used to tell me.
4.同位语从句就是在news, fact, question, problem, idea, doubt, thought, reason, truth, view, opinion, conclusion, decision, impression等抽象名词之后，说明其具体内容的从句。
The fact that he has fully recovered makes me feel good.
There is no doubt that he is guilty.
区别定语从句：
1. The question occurred to me we should go to get the car repaired. We were in the middle of the forest at that time.
2. The fact has worried many scientists the earth is becoming warmer and warmer these years.
3. There is no doubt every high school student wishes to be successful in the National College Entrance Examination.
翻译句子
1.足球比赛是否举行将视天气而定。
_____________________________________________________________
2.我的建议是我们明天一早就出发。
_____________________________________________________________
3.我突然想起，今天是她的生日。
_____________________________________________________________
参考答案
主语从句is，remains，was，were，whoever，that，Whatever，How，has，what 宾语从句where，be released，if/whether，that
I would appreciate it if you can give me some suggestions.
表语从句how that what
同位语从句where that that
翻译句子
1. Whether the football game will be played depends on the weather.
2. My suggestion is that we should start early tomorrow.
3. It suddenly occurs to me /strikes me that today is her birthday.
英语名词性从句语法100题练习
英语名词性从句语法练习100题 1. I’m sorry I have no idea ___. a. what does this word mean b. what’s the meaning of this word c. what this word means d. what meaning of this 2. ___is known that she is a famous doctor. A. That b. This b. It d. She 3. The reason for his absence was ___his mother was ill. A. because b. that c. why d. what 4. I haven’t seen you for ages. Can you tell me ____ a. where have you gone b. where you have gone c. where have you been d. where you have been 5. ___we will have a good harvest this year is still unknown. A. If b. That c. Which 6. ____wasn’t quite clear. a. Why did she do it b. Why she did it c. What did she do d. What she did it 7. ___do you think is the top student in your class a. Whom b. Who c. Whose d. Which 8. ___might do harm to other people. a. That you have done b. What you have done c. What have you done d. Which have you done 9. ____gets hone first starts cooking. A. Anyone b. Whoever c. Who d. Those 10. Is this ___looking for a. what are you b. what you are c. that were you d. that you were ’ll give this book to ___likes to have it . a. whomever b. whichever c. whatever d. whoever idea ___we should finish the work ahead of time was accepted. A. that b. whether c. if d. which is all ____our teacher explained to us in class. a. what b. that c. which d. of want to know ___. a. where are the experimental plots b. where are the experimental plots. c. where the experimental plots are d. where the experimental plots are thing to do is _____everyone is doing here. a. the thing what b. which the thing c. which d. what 16. It doesn’t matter ___to day or tomorrow. a. whether you come b. how you come c. when you come d. why you come 17. After graduation she asked to be sent to ___. a. where she was mostly needed b. where she was most needed c. where was she needed d. where she needed 18. I don’t know if she ____tomorrow; if he ____, I’ll let you know. a. comes, will come b. will come, will come c. will come, comes d. comes, comes 19. ____happens, don’t be afraid. A. What b. Anything c. Wh ich d. Whatever 20. He didn’t pass the exam, ___hard he had tried. A. how b. whatever c. however d. wherever 21. She did live far from ___I am living. A. the place that b. the place which c. where d. the place 22. It worried her a bit ___her hair was turning grey . a. while b. if c. that d. for 23. ____he is a millionaire is known to all in the city. a. Since b. because c. That d. / 24. ___the 2008 Olympic Games will be held in Beijing is known to all . a. Whenever b. That c. If d. Whether 25. The reason why I burst into tears is ____I’m unwilling to part with my parents. a. that b. because c. which d. / 26. The problem lies _____I have no money. a. that b. in that c. in the fact d. in the fact that want to know _do to convince him. a. what can I B. how can I C. which I can d. what I can 28. __comes back fist is supposed to win the prize. a. whoever b. The one c. Those who d. Anyone 29. The old gentleman never fails to help ____is in need of his help.
初中英语语法宾语从句讲解_专项练习及答案
初中英语语法宾语从句讲解，专项练习及答案注意！宾语从句小口诀： 宾语从句三注意，时态语序引导词； 主句一般现在时，从句不需受限制； 主句一般过去时，从句须用相应时； 陈述句转化that引，一般疑问句用if/whether, 特殊问句疑问词，引导词后陈述式。 一、基本讲解 1 概念:在句中担当宾语的从句叫宾语从句，宾语从句可作谓语动词的宾语，也可做介词的宾语。eg, He said he was good at drawing. (动词宾语) He asks him how long Mike has been down . (动词宾语) Miss Zhang is angry at what you said. (介词宾语) 2.连接词 (1) .陈述句转化成宾语从句时，引导词用that,口语中常常省略。 e.g, She told me (that) she would like to go with us. (2)以whether 或if 引导的宾语从句, 主要用来引导一般疑问句意思或选择疑问句意思的宾语从句，从句同样是陈述语序 eg, I wonder if /whether u have told the new to Li Lei . 注意：一般情况下，whether 和if 可以互用，但有些情况例外。 a. 当从句做介词的宾于是只用whether 不用if eg, We are talking about whether we'll go on the pinic. b. 引导词与动词不定式或not 连用时，只用whether. eg, Please let me know what to do next. Could you tell me whether u go or not? c. if当如果讲时，引导的是条件状语从句，这时不能用whether. (3).特殊疑问句转化成宾语从句时，引导词用特殊疑问词；引导词后要用陈述句语序。 E.g. Could you tell me what's the matter\wrong with you? 特殊情况：：当do you think后接特殊疑问句转化成宾语从句时，句式结构应为引导词＋do you think＋陈述句语序。 3.宾语从句时态
(完整版)高考英语【名词性从句】
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英语《名词性从句》语法知识及英语学习方法
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之后，如think, make, consider等，可以用it作形式宾语。 （2）That从句一般不能充当介词宾语，偶尔可作except, in 的宾语。 3、表语从句（that不可省略） 4、同位语从句 连词that引导同位语从句时，应在某些抽象名词之后，如：fact, hope, desire, thought, suggestion, idea, news, problem, possibility等，对前面的名词起补充说明的作用，that在从句中不担当任何成分，不能省略。 二、whether/if从句 1、在表语从句和同位语从句中只能用whether不能用if;当主语从句放于句首时，只能用whether不用if;当it作形式主语，主语从句放在句末时用whether或if 均可；discuss后引导宾语从句时，必须用whether。 2、在宾语从句中： （1）及物动词后：whether从句中不能有否定式，宾语从句为否定句时用if；if 不能与or not连用，但可以用whether or not；whether后可以加不定式。 （2）介词后：只能用whether,不用if。 三、特殊疑问词引导的从句 1、主语从句：特殊疑问词引导主语从句时，常用it作形式主语。 2、宾语从句 （1）常见的能接特殊疑问词引导的宾语从句的动词有see, tell, ask, answer, know, decide, find out, imagine, suggest, doubt, wonder, show, discuss, understand, inform, advise等。 （2）作介词宾语。 3、同位语从句、表语从句
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时，常把否定转移至主句表示。我认为他不会在会上发言的。I don't think (that) he can give a speech at the meeting.so等后，可用等动词以及I'm afraid 【拓展3】在think, believe, imagine, suppose, guess, hope 代替一个否定的宾语从句。代替一个肯定的宾语从句，用not eg: --- Do you believe he will come? 你相信他会来吗？ --- I believe so. 我相信会。 我相信不会。I don't believe so. (或I believe not.) --- 主要用来引导一般疑问句意思或选择疑问句意思的宾语引导的宾语从句, whether或if 2. 以。或whetherif在从句中不充当任何成分，意为“是否”从句，从句是陈述句语序。He asked me if he might use my knife. →He asked me. ？eg: “May I use your knife” 】从句的主语如果是第一人称，变为宾语从句则与主句的主语一致；如果是第二人1【注意1 称，则与主句的宾语一致；如果是第三人称，不用变化。 eg: “Do you know her telephone number？”He asked me. →He asked me whether I know her telephone number. 【注意2】：一般情况下，whether 和if 可以互用，但有些情况例外。 ①当从句做介词的宾于是只用whether 不用if。 eg: We are talking about whether we'll go on the picnic. 我们在讨论是否去野餐。 ②引导词与动词不定式或or not 连用时，只用whether。 eg: Please let me know whether to do next step. 请让我知道是否开展下一步行
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赖氏经典英语语法—名词性从句
名词性从句 名词性从句包括宾语从句、主语从句、表语从句、同位语从句。 名词性从句一共有三种：1）that从句；2）whether从句；3）疑问词所引导的从句。 分项说明如下： 1）that从句 任何一个主语起首的陈述句前面冠以that，即成that从句。 He enjoys dancing. That he enjoys dancing. 2）whether从句 由可用yes/no回答的问句，即一般疑问句变化而成。 a) 问句有be动词时：Is he happy? Whether he is happy. b) 问句有一般助动词（can, will, may, should, ought to, must, have）时： Can he do it? Whether he can do it c) 问句有do, does, did等助动词时：主语与助动词还原，再将do, does, did去掉，后面的动词依人称和时态变化。 Did he come? Whether he came 3）疑问词所引导的从句 由疑问词（when, what, how, where, why）等引导的问句，即特殊疑问词，变化而成。 a) 问句有be动词时：What is he doing? What he is doing. b) 问句有一般助动词（can, will, may, should, ought to, must, have）时： 主语与助动词还原，前面保留疑问词。Where can he find it? Where he can find it. c) 问句有do, does, did等助动词时： 主语与助动词还原，前面保留疑问词，再将do, does, did去掉，动词依人称和时态变化。 What did he write? What he wrote. 注： Who, what, which为疑问代词，若在问句中作主语，变成名词性从句时，结构不变。 Who came here? Who came here. 名词性从句的功能： 1）作主语 Where he lives is still in doubt. 2）作及物动词的宾语 I know that he will go abroad in the near future. 3）作介词的宾语 a)此时仅能用whether从句或疑问词引导的名词性从句作宾语。That从句不可作介词的宾语。 I am worried about whether he can do it. prep. o. I am curious about how he’ll cope with the problem.
高中英语语法_状语从句练习30题及详解
1. Tim is in good shape physically he doesn't get much exercise. A. if B. even though C. unless D. as long as 2. The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult. A. once B. when C. if D. unless 3. you may have, you should gather your courage to face the challenge. A. However a serious problem B. What a serious problem C. However serious a problem D. What serious a problem of the heavy traffic，it was already time for lunch break she got to her office． A．since B．that C．when D．until* m John thinks it won’t be long he is ready for his new job. A. when B. after C. before D. since 6. Today, we will begin ________we stopped yesterday so that no point will be left out. A. when B. where C. how D. what 7. She had just finished her homework her mother asked her to practice playing the piano yesterday. A. when B. while C. after D. since 8. My parents don’t mind what job I do I am happy. A. even though B. as soon as C. as long as D. as though 9. You can’t borrow books from the s chool library ______ you get your student card. A. before B. if C. while D. as 10. All the dishes in this menu, otherwise stated, will serve two to three people. A. as B. if C. though D. unless of the financial crisis, days are gone _ _ local 5-star hotels charged 6,000 yuan for
初中英语语法宾语从句讲解-专项练习及答案
初中英语语法宾语从句讲解 小口诀： 宾语从句三注意，时态语序引导词；主句一般现在时，从句不需受限制； 主句一般过去时，从句须用相应时；陈述转化that引，一般疑问用if/whether, 特殊问句疑问词，引导词后陈述式。 一．基本讲解来源：直接引语变间接引语 概念:在句中担当宾语的从句叫宾语从句。 Eg: He said,“I am good at drawing”. He said he was good at drawing. (动词宾语) 1.引导词 (1) that引导宾语从句时，通常用陈述句充当, that可省略。 Eg: She said,“I want to go there ”She said (that) she wanted to go there. (2) whether 或if 引导的宾语从句,由一般疑问句/选择疑问句充当，陈述语序。 Eg: “Are you interested in geography?” she said. She asked if/whether I was interested in geography. I wonder if /whether she has told the new to Li Lei . I’m not sure whether he will come or not. 注意：一般情况下，whether 和if 可以互用，但有些情况例外 a. 介词短语后只用whether 不用if eg: We are talking about whether we'll go on the panic. b. 引导词与动词不定式或or not 连用时，只用whether. eg:I can?t say whether or not he will come on time c. if当如果讲时,引导的是条件状语从句，表示‘如果’，不能用whether. Eg: If you want to be a good teacher, it will take times. Whether you can succeed depends on how much effort you pay. (3).特殊疑问词引导宾语从句时，不可省略，陈述句语序。 特殊疑问词为：how , when, where, why ,which whose. E.g. …What do you want?? He asked. He asked me what I wanted. I have no idea where he is now. I don?t know how to deal with it. He asked whose handwriting is the best in the class. 2.宾语从句时态 a.主句为一般现在时，从句不受主句的限制 eg: Do you know if/whether he has seen the film? I?m sorry to hear that your father is ill. She says she is going to go to Beijing next week. He tells me that his sister came back yesterday. b.当主句是一般过去时，从句用过去的相应某种时态 She didn?t know why the boy was late again. (过去一般) I didn't know if/whether he had seen the film.（过去完成） I wondered when she was going to America.（过去将来） 注意：当主句是一般过去时，而从句表示的是客观真理，自然现象，科学原理，格言等，从句仍然要用一般现在时。例如： Eg: He said （that the earth moves round the sun. / that light travels much faster than sound.）The teacher told us （seeing is believing.）
高考英语语法复习三：名词性从句
高考英语语法复习三:名词性从句 名词性从句相当于名词,可分别作主句的主语、表语、宾语和同位语。因此,名词性从句可分为主语从句、表语从句、宾语从句和同位从句。 (一引导名词性从句的连接词 1、连接代词:who, whose, whom, what, which。有词义,在从句中担任成分,如主语、表语、宾语、或定语等。 2、连接副词:when, where, why, how。有词义,在从句中担任成分,作状语。 3、连接词:that, whether, if, as if。that 无词义,在从句中不担任成分,有时可省略; if (whether, as if虽有词义,但在从句中不担任成分。 注意:连接代词与连接副词在句中不再是疑问句,因而从句中谓语不用疑问式。连接代词与连接副词在从句充当句子成分,连接词whether 和if(是否,as if(好象在从句中不充当句子成分,只起连接作用。根据句义,如果连接代词与连接副词,whether、if 和as if 都用不上时,才用that作连接词(that本身无任何含义。 (二主语从句 1、主语从句在复合句作主语。 e.g. Who will go is not important. 2、用it作形式主语,主语从句放在句末。 e.g. It doesn't matter so much whether you will come or not. 3、that引导主语从句时,不能省略。 e.g. That he suddenly fell ill last week made us surprised. (三表语从句 1、表语从句在复合句中作表语,位于系动词之后。 e.g. The question was who could go there. 2、引导表语从句的连接词that有时可省去。 e.g. My idea is (that we can get more comrades to help in the work. (四宾语从句 1、宾语从句在复合句中作宾语。引导宾语从句的连词that一般可省略。 e.g. I hope (that everything is all right. 2、介词之后的宾语从句,不可用which或if连接,要分别用what或whether。 e.g. I'm interested in whether you've finished the work.. I'm interested in what you've said. 3、whether与if都可以引导宾语从句,常可互换。但下面情况不能互换。 ①宾语从句是否定句时,只用if,不用whether。 e.g. I wonder if it doesn't rain. ②用if 会引起误解,就要用whether。 e.g. Please let me know whether you want to go.(此句如果把whether改成if,容易当成条件句理解 ③宾语从句中的whether 与or not直接连用,就不能换成if;不直接连用,可换。 e.g. I don't know whether or not the report is true.
英语语法之时间状语从句
时间状语从句常由以下连接词引导：when（当……时），as（一边……一边；当…时），while（在……期间），after（在……之后），before（在……之前），as soon as（一……就），since（自从），till(until)（直到……，直到……才），whenever（任何时候），the moment（一……就），no sooner than（一……就），hardly…when… （一……就）等。由以上连接词（或词组）连接的主从复合句中，主句和从句的动作，有的是同时发生，有的是先后发生。因此，要特别注意根据连接词所代表的时间不同，主句和从句的谓语要使用相应的时态。这是掌握时间状语从句的关键。 1. when 和whenever 引导的从句：从句的动作和主句的动作可以同时发生，也可以先于主句的动作发生。例如： When we reached home, it was already dark. 我们到家的时候天已经黑了。 When my cousin came yesterday, I was playing volleyball. 昨天我表哥来时，我正在打排球。 When it rains, I go to school by bus.下雨的时候，我坐车去学校。 I shall tell her the good news when she comes. 她来时，我将告诉她这个好消息。（主从句都表示将来发生的动作，但要注意从句中要用一般现在时，表示将来。） Come to see us whenever you can.你什么时候有空，就过来看看我们。 2. while 和as 引导的从句：while表示“当…过程中”，强调某一段时间主句和从句的动作在同时发生。as表示“当…时”或 “一边…一边”，主句和从句的动作同时发生。例如： Work while you work; play while you play. 该工作的时候就工作，该玩的时候就玩。 While he is reading, he always makes notes. 他经常一面看书，一面做笔记。 She sings as she goes along.她边走边唱。 You will grow wiser as you grow older. 随着年龄的增长，你会更加聪明起来。 3. before 和after 引导的从句：前者一般表示主句的动作发生在从句动作之前。后者表示主句的动作发生在从句动作之后。 例如： I didn’t know any English before I came here. 我来这儿之前，一点英语都不懂。 I had written my report before my mother came back.
初中英语语法-名词性从句练习题
初中英语语法English Grammar 名词性从句 ****************************************************** 第十一章名词性从句 在主从复合句中，从句可以充当主句的主语、表语、宾语或同位语。由于在多数情况下，主语、表语、宾语或同位语这四种句子成分由名词性词类充当，所以，我们把这些作用相当于名词的从句统称为名词性从句，把充当主语、表语、宾语或同位语的从句分别称为主语从句、表语从句、宾语从句或同位语从句。也就是说充当什么成分就叫什么从句。名词性从句由连接词（或关联词）引导。常用的连接词有： 连接词作用 whether 是否 that (本身无词义) 只起连接词作用，引导从句，在从句中不作任何成分 who, whom, whose which 哪一个 what 什么，所…的在从句中分别作主语、宾语和定语 在从句中分别作主语、宾语和定语 在从句中分别作主语、宾语和定
语 when什么时候，where什么地方how怎样、怎么，why为什么除了起连接词作用外，还在从句中作状语 疑问词（who, whom, whose, what, which, where, why, when, how）可以引导主语、宾语和表语从句。它们的特点是：1、疑问词有本身的词义；2、疑问词在从句中担当句子成分，如主语、宾语或状语；3、这种疑问词引导的从句一律用陈述语序，不能用疑问语序。 For example: Do you know whom they are looking for? 你知道他们在找谁吗？（宾语从句，陈述语序。不能是whom are they looking for?） I don’t know who did it.我不知道这是谁干的。（宾语从句。在从句中如果疑问词作主语，其陈述语序和疑问语序一致。） She asked me where I had been.她问我到哪儿去了。（宾语从句。陈述语序，不能是where had I been. 直接引语，间接引语。注意这句 话的时态。） Can you tell me when the train will arrive? 你能告诉我火车什么时候到吗？(宾语从句。陈述语序，不能是when will the train arrive. 直接引语，间接引语。) I don’t know why he hasn’t come yet. 我不知道他为什么还没来。（宾语从句，陈述语序。不能是why hasn’t he come yet.）He didn’t tell me what you were doing. 他没和我说你在干什么。（宾语从句，陈述语序。不能是what were you doing.）
(完整)初中英语语法状语从句讲解及练习附答案
初中英语语法专题讲座——状语从句 状语从句在复合句中作状语，修饰动词、形容词或副词等。状语从句可以表示时间、条件、原因、地点、目的、结果、让步、方式、比较等意义。 知识梳理：提纲挈领，抓住重点和难点！ 各类状语从句连接词（短语）一览表： 时间 when, while, as, as soon as, since, until, after, before，as long as（长达……之久） 条件 If, unless,as/so long as(只要) 原因 As, because, since，as/so long as(既然,因为) 地点 Where 目的 So that(为了), in order that 结果 So that（方便）, so…that,such…that 让步 though, although, even if, however 方式 As 比较than, (not)as…as, 时间状语从句： Whenever he comes, he brings a friend. 他每次来都带个朋友。 They all continued their regard for me as long as they lived. 他们毕生都在关心着我. 条件状语从句： As long as I am alive, I will go on studying. 只要我活着，我就要学习。 原因状语从句： Since we live near the sea, we enjoy nice weather.由于我们住在海边，能享受到好的天气。 地点状语从句： Put it where we can all see it.把它放在我们都能看到的位置。 目的状语从句： Finish this so that you can start another.把这个做完，（为了）你可以开始另一个。 结果状语从句： He was so angry that he couldn't say a word. 他气得说不出话了。 让步状语从句： Though he is in poor health, he works hard.虽然他身体不好，但是他工作很努力。
初中英语语法：宾语从句
初中英语语法：宾语从句 考察的三个要点：语序，时态，关联词。 1.定义：用作宾语的从句叫宾语从句。 2.构成：关联词+简单句。 3宾语从句的语序一定是陈述句语序。（who 作主语的从句本身就是陈述句语序） 4宾语从句在复合句中作主句的宾语，连接宾语从句的连词有 that（that在口语中常省略）。 whether，if，和连接代词what，which， who， whom及连接副词when， where， how， why。 He knew（that） he should study hard. 他知道他应该努力学习。 Can you tell me which class you are in？ 您能告诉我，您在哪一班吗？ He asked me if he could come in， 他问我他是否能进来。 5.引导宾语从句的关联词有三类： （1）从属连词that.如：一般那情况下能够省略。 He told us that he felt ill. I know he has returned. 注： that在引导宾语从句时也并不是任何情况下都能够省略。在以下情况下，that不能省略。
1.Everybody could see what happened and that Tom was frightened. （and连接两个宾语从句，that宾语从句放在and的后面时，that不能省略。） 2.I know nothing about him except that he is from the south. （that引导的宾语从句作介词宾语时，that不能省略。） 3.That he ever said such a thing I simply don’t believe.（that从句位于句首时，that不可省略。） 我简直不相信他曾说过这样的话。 （2）从属连词if/whether.如： I doubt whether he will succeed. I don’t know if you can help me. （3）连接代词who，whom，whose，what，which，whoever，whatever， whichever 连接副词 where，when，how，why. Who or what he was，Martin never learned. I wonder what he’s writing to me about. I’ll tell you why I asked you to come.