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什么是从句
从句是一个独立的句子，它有自己的主语和谓语，但是却依赖于另一个句子，或称之
为主句，来表达其意思。
从句一般由关系词（如：who，which，that，where）引导。
在英语中，从句可以分为三大类：定语从句、状语从句、名词性从句。
1、定语从句
定语从句可以称为限制性定语从句或非限制性定语从句，主要用来修饰名词或名词性
词组，“which，who，whom，whose”等关系词常常用在定语从句中。
限制性定语从句用
于限定或特定某个或一些特定的人或事物，非限制性定语从句提供额外的信息，而不是用
来限定语气的信息。
例如：
The students who work hard can get good grades.
这句话中的“who work hard”为定语从句，用来限制此处的students，who为关系词。
状语从句经常用来修饰句子中的动词、形容词或其他动词形式，关系词which，when，where，why，while，if等用在状语从句中，它一般表达时间、条件、原因、让步、结果
等概念。
例如：
He always comes to school early, which makes him popular among his classmates.
3、名词性从句
名词性从句可以用作句子中另一个句子的主语、宾语、表语和同位语，如：
This is what I want.
总之，从句可以被看作是一个整体，而且它给母句带来更加丰富的意义和语言表达。
只有理解了其结构、特点以及与主句之间的关系，才能更好的运用从句来表达自己的思想。
第一部分从句（Subordinate Clause）是复合句里的一个句子成分。
它不能独立成句，但它也有主语部分和谓语部分，就是句子一样。
所不同的是，它必须由一个关联词（Connective）来引导。
从句有主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类。
由于主语从句、表语从句及宾语从句在句子的功用相当于名词，故而这3种从句又通称名词性从句。
一、主语从句（Subject Clause）：用作主语的从句叫主语从句。
引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。
二、宾语从句（Object Clause）：用作宾语的从句叫宾语从句。
引导表语从句的关联词与引导主语从句的关联词大都一样。
三、表语从句Predictive Clause：用作表语的从句叫表语从句。
引导表语从句的关联词与引导主语从句的关联词大都一四、同位语从句（Appositive Clause）：与先行词同位或等同的从句叫作同位语从句。
其关联词多为that。
五、定语从句（Attributive Clause）：用作定语的从句叫定语从句。
定语从句一般皆放在被它所修饰的名（代）词之后，这种名（代）词就叫作先行词（Antecedent）。
引导定语从句的关联词为关系代词和关系副词。
关系代词在定语从句中可用作主语、宾语、定语等；关系副词在定语从句中用作状语。
六、状语从句（Adverbial Clause）：用作状语的从句叫作状语从句。
其关联词是一些从属连词。
第二部分一名词性从句:1. 主要包括主语从句,宾语从句,表语从句和同位语从句. 一般由that 引起,也可由who, what, when, why, which, whom, whether, how 引起.What you need is more practice.（你需要的是更多的练习。
）The question is whether it is worth doing.（问题是这值不值得做。
从句_百度百科从句是构成复合句的基本成分之一，它是由主句和从句组成，并且从句在句法上起到修饰、补充、说明或限制主句含义的作用。
本文将介绍从句的定义、分类以及从句在句子中的作用。
一、从句的定义从句是句子中具有完整结构和一定意义的一部分，它不能独立存在，必须与主句组合使用。
从句在句子中起到对主句进行补充、说明或限制的作用，使整个句子更加精确、详细或具有逻辑关联。
从句通常由一个主语和一个谓语构成，也就是它具备句子的基本成分。
但与主句不同的是，从句不能单独成为一个句子，需要与主句连接起来才能完整表达。
二、从句的分类从句可根据其在句中的作用和从句引导词的不同进行分类。
下面是几种常见的从句：1.名词性从句名词性从句可以担任主语、宾语、表语和同位语的作用。
根据引导词的不同，名词性从句可以分为以下几类：（1）主语从句主语从句作为句子的主语，其引导词通常是“从句是、是否、怎样、怎么等”。
例如：“他说的你是不能相信的。
”（主语从句作主语）（2）宾语从句宾语从句作为句子的宾语，其引导词通常是“从句是否、宜、可、能、不、应该、不要”等。
例如：“我不知道他是否会来。
”（宾语从句作宾语）（3）表语从句表语从句作为句子的表语，其引导词通常是“从句是、感到、觉得、看起来”等。
例如：“你的观点是对的。
”（表语从句作表语）（4）同位语从句同位语从句通常用来对前面的名词进行解释、说明、补充或限制。
例如：“我们都知道，成功是靠努力获得的。
”（同位语从句对“成功”进行解释）2.定语从句定语从句用来修饰某个名词或代词，起到限制或添加详细信息的作用。
例如：“这是我刚刚认识的一个朋友。
”（定语从句修饰“一个朋友”）3.状语从句状语从句用来表示条件、原因、时间、地点、目的、结果、让步等等，它可以对句子进行补充或者限制。
例如：“如果明天下雨，我们就不去。
”（状语从句表示条件）三、从句在句子中的作用从句在句子中起到对主句进行修饰、限制、补充或者说明的作用。
从句9种全从句是指在复合句中作为独立成分的句子。
根据从句的功能和结构，可以将从句分为多个类型。
本文将介绍完整版从句的九种常见类型，包括：1. 名词性从句：名词性从句可以充当主语、宾语、表语或同位语。
例如：“他说他会来”中的“他会来”是一个宾语从句。
2. 定语从句：定语从句用来修饰名词或代词。
它通常放在被修饰的名词或代词之后。
例如：“我喜欢的书是你给我的那本”中的“你给我的那本”是一个定语从句。
3. 状语从句：状语从句用来修饰动词、形容词或副词，表达时间、地点、原因、条件等信息。
例如：“因为下雨，我没有去游泳”中的“因为下雨”是一个状语从句。
4. 同位语从句：同位语从句用来解释或说明名词的具体内容或性质。
例如：“我听说他被任命为经理”中的“他被任命为经理”是一个同位语从句。
5. 结果从句：结果从句用来表达某个行动或情况的结果。
例如：“她太累，以致于睡着了”中的“以致于睡着了”是一个结果从句。
6. 条件从句：条件从句用来表示某个条件下可能发生的情况。
例如：“如果明天下雨，我们就不去郊游了”中的“如果明天下雨”是一个条件从句。
7. 原因从句：原因从句用来说明某个行动或情况的原因。
例如：“他失败是因为他不努力”中的“因为他不努力”是一个原因从句。
8. 目的从句：目的从句用来表达某个行动或情况的目的。
例如：“我来找你是为了向你道歉”中的“为了向你道歉”是一个目的从句。
9. 让步从句：让步从句用来表示与主句意思相反的情况。
例如：“尽管下雨了，他还是去了”中的“尽管下雨了”是一个让步从句。
以上就是完整版从句的九种类型，希望对您的写作有所帮助。
从句所有知识点总结一、从句的概念从句是指句子中含有一个或多个主语和谓语的小句，它依附在另外一个句子中充当其中的一个成分。
例如：I know that you are busy.（我知道你很忙。
）在这个句子中，“that you are busy”就是一个从句，它依附在主句“ I know”中充当宾语。
二、从句的分类1. 名词性从句名词性从句是可以在句子中充当名词成分的从句。
包括主语从句、宾语从句、表语从句和同位语从句。
主语从句：主语从句位于句首，用于充当主语，引导词有：that, whether, if, who, which, what, how, when, where, why等。
例如：What you said is very important.（你说的很重要。
）宾语从句：宾语从句位于动词后面，用于充当宾语，引导词有：that, whether, if, who, which, what, how, when, where, why等。
例如：I don’t know what to do.（我不知道该怎么办。
）表语从句：表语从句位于连系动词后面，用于充当表语，引导词有：that, whether, if, who, which, what, how, when, where, why等。
例如：The problem is who will go there.（问题是谁去。
）同位语从句：同位语从句位于名词后，用于对名词进行解释或说明，引导词有：that, whether, who, what等。
例如：My hope is that you can come.（我的希望就是你能来。
）2.形容词性从句形容词性从句是用来修饰名词或代词的从句，引导词有：that, who, which, where, when等。
例如：I like the book that you recommended.（我喜欢你推荐的书。
英语八大从句类型例句含翻译1. 名词性从句（Noun Clause）:- Example 1: What she said surprised everyone.Translation: 她说的话让每个人都感到惊讶。
- Example 2: Whether they will come is uncertain.Translation: 他们是否会来是不确定的。
2. 形容词性从句（Adjective Clause）:- Example 1: The girl who is sitting next to me is my sister.Translation: 那个坐在我旁边的女孩是我妹妹。
- Example 2: I like the book that you recommended.Translation: 我喜欢你推荐的那本书。
3. 副词性从句（Adverbial Clause）:- Example 1: I will go to the party if I finish my work.Translation: 如果我完成工作，我将去参加聚会。
- Example 2: She sings well when she is happy.Translation: 她在开心时唱得很好。
4. 定语从句（Relative Clause）:- Example 1: The person who called you is waiting outside.Translation: 给你打电话的人正在外面等着。
- Example 2: The house that we visited yesterday is beautiful.Translation: 我们昨天参观的房子很漂亮。
5. 时间状语从句（Time Adverbial Clause）:- Example 1: We will start as soon as the rain stops.Translation: 一旦雨停，我们就会开始。
从句结构一，名词性从句主语从句宾语从句表语从句同位语从句1、名词性从句的构成：That类连接词： that， whether 和if.(这类词以that为代表在句子当中不充当任何成分）Wh-类连接词： what, whatever ,who, whoever, which, whichever ,when, where, how why……2、主语从句：从句在句子中充当主语的成分（从句有完整的主语，谓语，宾语）A: 由 that 引导That she will go abroad to take advanced study seems unlikely.她要出国深造似乎不大可能。
Whether he agrees to the plan or not makes no difference.他同意不同意此计划无所谓。
That引导主语从句，但是并不充当任何语法成分，但是不可以省略。
B: Wh-类连接What she said on that occasion greatly shocked me.她在那个场合下说的话令我震惊。
Whatever is worth doing should be done well.任何值得做得事情都应该做好。
C，主语从句后置的情形It is a miracle that he get a success in the exam.常见的四种结构：it +be+形容词+that -从句It+be+-ed分词+that-从句It+be+名词+that-从句It+不及物动词+that-从句3、宾语从句：宾语从句就是在一个句子里充当宾语的句子。
A: that 连接：Jones said that he was to be married next month.约翰说他下个月将结婚。
I was wondering whether I should bring my girl friend to be gathering. 我在考虑聚会的时候是否要带女朋友过去B: wh- 连接：I wonder why he deserted his enviable well-paid position.我不明白为什么他要辞掉那个令人羡慕的工作。
从句知识点总结一、定义从句，是指在一个句子中又包含一个完整的句子结构的一种修饰成分。
从句可以作为主语、宾语、定语、状语、补语等。
二、分类1. 名词性从句名词性从句是由一个独立的句子充当名词在句子中扮演一个名词的角色。
名词性从句分为主语从句、宾语从句、表语从句和同位语从句。
主语从句：e.g. What he said is true.宾语从句：e.g. I don’t know whether he will come.表语从句：e.g. The question is whether we can finish it in time.同位语从句：e.g. The news that they will get married is known to everybody.2. 定语从句定语从句是修饰一个名词或代词，以形成复合句的句子。
e.g. The book which you lent me is very interesting.3. 状语从句状语从句是表示时间、地点、原因、条件、结果等的从句。
e.g. I will call you when I arrive.4. 名词性从句名词性从句是由一个独立的句子充当名词在句子中扮演一个名词的角色。
名词性从句分为主语从句、宾语从句、表语从句和同位语从句。
5. 同等连词引导的从句有时从句可以由“ as, since, while, when, because”等连词引导。
三、从句的语序1. 主语从句的语序如果主语从句是一般疑问句，那么主语从句的语序是正常的一般疑问句语序，即“疑问词 + 谓语 + 主语 + 其他”。
如果主语从句是陈述句，那么主语从句的语序是一般陈述句语序，即“主语+ 谓语+ 其他”。
2. 宾语从句的语序宾语从句的语序根据主句而定。
如果主句是陈述句或肯定句，则宾语从句的语序与原陈述句语序一致；如果主句是疑问句，那么宾语从句的语序是陈述句语序，即“主语 + 谓语 +宾语 + 其他”。
从句的类型及用法总结从句是语言中的一种基本成分，它可以扩展句子的信息量，并使句子更加具体和明确。
从句分为几种类型，包括名词性从句、形容词性从句和副词性从句。
本文将对这些从句的类型及其用法进行总结，并举例说明。
一、名词性从句名词性从句可以在句子中充当主语、宾语、表语或宾语补足语。
名词性从句通常由连接词“从属连词”引导，包括“that、whether/if、who、whom、whose、which、what”等。
1. 主语从句主语从句在句子中充当主语，常以“that、whether/if、wh-”为引导词。
例如：- That he has refused to help surprises me. (他拒绝帮助我，让我感到惊讶)- Whether she will come or not is still uncertain. (她是否会来还不确定) - What he said is true. (他说的是真的)2. 宾语从句宾语从句在句子中充当直接宾语或间接宾语，常以“that、whether/if、wh-”为引导词。
例如：- He knows that you are coming. (他知道你要来了)- I wonder if he can finish the task. (我想知道他是否能完成这个任务) - I don't know what he is talking about. (我不知道他在说什么)3. 表语从句表语从句在句子中充当表语，常以“that、whether/if、wh-”为引导词。
例如：- My wish is that you succeed. (我希望你成功)- The fact that he lied shocked everyone. (他撒谎的事实让每个人都感到震惊)4. 宾补从句宾补从句通常跟在某些动词（如“think、believe、find、consider”等）或介词（如“for、on、about”等）后面，充当宾语的补足语，常以“that、whether/if、wh-”为引导词。
22. is not known that they discussed in the meeting. (01)A. ThatB. HeC. ThisD. It27. A bottle weights less after air is taken out, proves that air has weight. (01)A. weB. itC. whichD. what38. Radio is different from television in it sends and receives pictures. (01)A. whichB. thatC. whatD. this43. Take this baggage and you can find enough room. (01)A. put it whichB. put it in whichC. put it at whereD. put it where26.The reason why the car stopped was ________.(03)A. because the road was not goodB. that the road was not goodC. due to the bad roadD. because of the bad road35. The first—year students were learning from the army in Miyun, a suburb of Beijing near ______ I lived. (03)A. whatB. whereC. thatD. which55. All ___________ is a continuous supply of fuel oil. (03)A. what is neededB. that is neededC. the thing is neededD. for their needs29. Scientists say it may be ten years _______ this medicine was put to use. (04)A. sinceB. beforeC. afterD. when24. So far there is no proof _______people from other planets do exist. (04)A. whichB. howC. whatD. that30. In some countries, _______ is called "equality" does not really mean equal rights for all people.(04)A. 1hatB. whatC. whichD. how36. It is only through practice _______one will be able to swim skillfully. (04)A. whatB. whoC. thatD. which50.We Call separate the mixture into the pure chemical compounds ______it is composed. (04)A. in whichB. of thatC. of whichD. from which60. They overcame all the difficulties and fulfilled the plan three months ahead of time, ______ is something we had not expected. (04)A. thatB. whatC. itD. which56. ______,he could not cover the whole distance in fifteen minutes. (04)A. Fast as he ranB. As he ran fastC. If he ran fastD. Since he ran fast(2005)25. Jean worked just so much _______.A. like what she was toldB. as she was told toC. as to what she tried to doD. like she was told to32. Stormy applause broke forth ______ the singer appeared on the stage.A. a momentB. the momentC. in a momentD. at the moment33. Not until the game had begun ______ at the sports ground.A. had he arrivedB. would he have arrivedC. did he arriveD. should he have arrived34. ______ evidence that language-acquiring ability must be stimulatedA. It beingB. It isC. There isD. There being36. Although Anne is happy with her success, she wonders ______ will happen to her private life.A. thatB. whatC. itD. this38. ______ he was not in uniform, he carried a pistol under his arm.A. Even whenB. As long asC. As soon asD. Ever since42. ______you are leaving tomorrow, we can eat dinner together tonight.A. ForB. SinceC. BeforeD. While50. The men will have to wait all day _____ the doctor works faster.A. ifB. whetherC. unlessD. that54. They climbed to the top of the hill ______ they could get a bird’s eye view of the city.A. for fear thatB. in order thatC. in caseD. as a result55. She had clearly no ___ of doing any work, although she was very well paid.A. interestB. meaningC. intentionD. willingness(2006)21. The earth revolves a little more rapidly __________it is closer to the sun,A. whetherB. whereasc. although D. when39. I thought his speech would be interesting, but it turned out that the more he talked,__________.A. the more bored became IB. the more I became boredC. the more bored I becameD. I became the more bored48.The fried fish we ate at the restaurant yesterday is marvelous .I’d like to have it again even if it costs _____.A. and twice muchB. twice as muchC. much as twiceD. as much twice60.No sooner _______begun to speak than some noise arose form the audience.A. he hadB. had heC. he hasD. did he(2007)21. Mary is one of the brightest students who ___from New York University.A. graduatedB. have graduatedC. had graduatedD. has graduated24. She is pleased with what you have given her husband and ___you have told him.A. thatB. whichC. all whatD. all that25. I passed my exams but it was a long time ___ my friends about it.A. that I did not tell B .before I told C. after I told D. since I told31.His success was due to ___ he had been working hard all the time.A. thatB. the fact whichC. the fact thatD. the fact what37. I have really got angry with John because ___I suggest, he always disagrees.A. whateverB. anythingC. whatD. everything48. The two elements ___water is made up are the gasses---oxygen and hydrogen.A. thatB. whichC. of whichD. with which49. So fast ___that it is difficult for us to imagine its speed.A. light travelsB. travels lightC. does light travelsD. does light travel50. Output is now six times ____it was before liberation.A. that B which C. what D. of which59. The photographs of Mars taken from satellites are ___than those taken from the earth.A. much clearerB. the clearestC. clearestD. more clearer(2008)1.His salary as a bus driver is much higher than ________.A. that of a teacherB. those of a teacherC. these of a teacherD. this of a teacher2.Hardly ________ making the speech when the people stood up applauding.A. has the speaker finishedB. the speaker had finishedC. had the speaker finishedD. had finished the speaker3.Please see to it ________ no one comes in without identification.A. thatB. lestC. whenD. which4.You could not persuade him to accept it, ________ make him see the importance of it.A. no more than you couldB. if only you could notC. nor could youD. or you could not5.There is much ________ can be done about the accidents ________ from carelessness.A. which … aroseB. that … arisingC. which … arisenD. that … arise6.More and more people are beginning to learn English, ________ can partly explain thebooming of language training centers in China.A. whichB. whatC. thatD. it7.The higher a rocket flies, ________ air it meets.A. the fewerB. the littleC. the lessD. the much8.It is during his spare time ________ Johnson has been studying a course in history.A. whenB. whichC. whatD. that(2009)22. The competition form experienced staff members, some of whom are higher in rank, to my disadvantages.A. worksB. workingC. workD. worked26. Word got around he had resigned his position as executive secretary of the committee.A. whatB. thatC. whateverD. which29. It is only in the most difficult circumstances a man’s abilities are fully tested.A. whenB. thatC. whereD. so what38. Believe it or not, Matt earns his brother, who has a better position in a big company.A. much as twice asB. as twice much asC. twice as much asD. as much twice as42. There are two major problems linked with atomic power plants, the first concerns nuclear waste.A. of whichB. of the twoC. of themD. of the plants47. Americans are trained to think of themselves as separate individuals, most Chinese consider themselves as members of a group.A. whereasB. asC. sinceD. like57. The rapid development China has achieved in the last decade that the future is likely to be very exciting.A. make it clearB. it has made clearC. it makes clearD. has made it clear(2010)42. It is generally believed that gardening is ______it is a science.A. an art much asB. much an art asC. as an art much asD. as much an art as46. The police think you brother John stole the diamond in the museum yesterday evening.Oh? But he stayed with me at home the whole evening; he ___ the museum.A. must have been toB. needn’t have been toC. should have been toD. couldn’t have been to52. _____ made the school proud was____more than 90% of the students had been admitted to key universities.A. What; becauseB. What; thatC. That; whatD. That; because53. Information has been released ______ more middle school graduates will be admitted into universities this year.A. whileB. thatC. whenD. as54. He is the only one of the students who ______ a winner of scholarship for three years.A. isB. areC. have beenD. has been55. What’s that newly-built building?______ the students have out-of-class activities, such as drawing and singing.A. It is the building thatB. That’s whereC. It is in whichD. The building that57. Why! I have nothing to confess, ______you want me to say?A. What is it thatB. what it is thatC. How is it thatD. How is it that59. It is universally known that microscopes make small things appear larger than _____.A. really areB. are reallyC. are they reallyD. they really are(2011)26. —Do you regret paying five hundred dollars just for the oil painting?—No, I would gladly have paid for it.A. twice as muchB. twice so muchC. as much twiceD. so much twice27. me most was that the young man who had lost both arms in an accident could play the piano beautifully with his feet.A. That amazedB. It amazedC. Which amazedD. What amazed28. The team leader promised to attend the meeting he arrived at the office.A. for the time beingB. the momentC. as much asD. the day30. Scarcely asleep when a knock at the door awakened her.A. had she fallenB. she had fallenC. did she fallD. she fell31. man realized that the brain controlled our thinkingA. It was not until the 18th century thatB. It was the 18th century sinceC. Not until the 18th century didD. It was until the 18th century which33. Advertising is distinguished from other forms of communication the advertiser pays for the message to be delivered.A. in thatB. in whichC. in order thatD. in the way39. The reason why I came back is she would have been very angry if I hadn’t.A. thatB. becauseC. forD. that because57. We will take a tour around Hangzhou next year we have enough money.A. lestB. untilC. unlessD. provided(2012)21. Wounded he was, he refused to come back from the front.A. sinceB. forC. asD. although24. It John and Peter who helped me with my work the other day.A. wereB. isC. had beenD. was27. No announcement has been made concerning on the next flight.A. who goB. who is goingC. is who goingD. who went30. Charles starts a job, he will do it it is finished.A. Since, whereB. Each time, onceC. Once, tillD. The moment, as36. ---“Do you think be will make a good president?”---“He is just Bill.”A. as qualified asB. more qualified likeC. the same qualified asD. much qualified than38. The crime was not discovered till 48 hours later, gave the criminals plenty of time to get away.A. whichB. thatC. asD. what45. Liquids are like solids they have a definite volume .A. on thatB. for thatC. with thatD. in that。
