高中英語基礎語法知識：名詞性從句
高中英語基礎語法知識：名詞性從句
一、名詞性從句的基本概念
在復合句中起名詞作用的從句叫名詞性從句，包括作主語從句、表語從句、賓語從句和同位語從句。
(1)主語從句
就是在復合句中作主語的從句。主語從句常用that, whether, who, whom, who, what, which, when, where, how, why, whatever, whoever等引導。如：
Whether he will be able to come remains a question. 他是否來還是問題。
That China is a great socialist country is well known. 眾所周知，中國是一個偉大的社會主義國家。
注：為避免頭重腳輕，使句子平衡，常用it作形式主語，而將主語從句后置。如上述第二例常說成：
It is well known that China is a great socialist country.
但是，由連接代詞what, whatever, whoever等引導的主語從句一般不能用形式主語。如：
What he found surprid me greatly. 他的發現使我非常吃驚。
Whoever is finished may rest. 凡是做完工的人都可以休息。
(2)表語從句
就是在連系動詞之后作表語的從句。引導表語從句的連接除與引導主語從句的連接詞外，還有as if， as though。如：
The question is whether he is able to do it alone. 問題是他能否單獨做這件事。
It looks as if (though) it is going to snow. 天好像要下雪似的。
注意：要區分以下句式：
1. that’s why+結果;that’s becau+原因。2. the reason why /for…is that…
He is abnt. That’s becau he is ill. 他缺席，這是因為他生病了。
He is ill. That’s why he is abnt. 他病了，這就是他缺席的原因。
The reason why he is abnt is that he is ill. 他缺席的.原因是他生病了。
(3)賓語從句
就是在復合句中作賓語的從句。引導這賓語從句的連接詞與引導主語從句的連接詞基本相同。如：
They didn’t say which they wanted. 他們沒有說他們想要哪一個。
I am sure (that) no harm will ever come to you. 我肯定你永遠不會受傷害。
I was surprid at what has happened.我對發生的事感到驚訝。
注意：當think, believe, suppo等的疑問式后面跟連接代詞或連接副詞引導的賓語從句時，習慣上將這些連接詞置于句首，即“連接代/副詞+do you think /believe /expect+賓語從句的其余部分?”如：
Who do you think is the best player this year? 你認為今年誰是最佳運動員?
What do you suppo you will do after school? 你想放學后干什么?
(4)同位語從句
就是在句中作同位語的從句。它通常有放在thought, idea, news, word(=news), plan, doubt, question, fact, suggestion, belief等抽象名詞的后面，說明這些詞的具體內容或含義。同位語從句大多由that引導，也可由whether, how, when, where, why等引導，但不能由which引導。如：
The idea that the earth is round is not a new one. “地球是圓的”這種觀點并不新鮮。
He must answer the question whether he agrees to it or not. 他必須回答他是否同意此事這們一問題。
I have no idea when he will t out. 我不知他什么時候出發。
注：有時，同位語從句并不緊跟在它所說明的詞的后面。如：
The whole truth came out at last that he was a wolf in sheep’s clothing. 真相終于大白了，他原來是一只披羊皮的狼。
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高中英語名詞性從句總結 謝謝
名詞性從句的功能相當于名詞詞組, 它在復合句中能擔任主語、賓語、表語、同位語、介詞賓語等，因此根據它在句中不同的語法功能，名詞性從句又可分別稱為主語從句、賓語從句、表語從句和同位語從句。一、引導名詞性從句的連接詞分類引導名詞性從句的連接詞可分為三類： 連詞（5個）：that （賓語從句或表語從句中that有時可以省略） whether,if （均表示“是否”表明從句內容的不確定性） as if ,as though （均表示“好像”，“似乎”） 以上在從句中均不充當任何成分 連接代詞（9個）：what, whatever, who, whoever, whom, whomever, who, which, whichever 連接副詞（7個）：when, where, how, why, whenever, wherever, however 不可省略的連詞： 1. 介詞后的連詞 2. 引導主語從句和同位語從句的連詞不可省略。 That she was chon made us very happy. We heard the news that our team had won. 比較whether與if 均為"是否"的意思。 但在下列情況下，只可用whether： 1. whether引導主語從句并在句首 2. 引導表語從句 3. whether從句作介詞賓語 4. 常與 "or not" 連用；if 則不可。 5. 引導同位語從句 Whether he will come is not clear. 大部分連接詞引導的主語從句都可以置于句末，用 it充當形式主語。 It is not important who will go. It is still unknown which team will win the match. 二. 主語從句作句子主語的從句叫主語從句。主語從句通常由從屬連詞that，whether，if，as if和becau等連接代詞what，who，which，whatever，whoever，whom等以及連接副詞how，when，where，why等詞引導。that在句中無詞義，只起連接作用；連接代詞和連接副詞在句中既保留自己的疑問含義、又起連接作用，在從句中充當從句的成分。becau引導表語從句。注：whom、who指人，what指物，whatever，whoever表示泛指意義。例如： What he wants to tell us is not clear. 他要跟我們說什么，還不清楚。 Who will win the match is still unknown. 誰能贏得這場比賽還不得而知。 It is known to us how he became a writer. 我們都知道他是如何成為一名作家的。 Where the English evening will be held has not yet been announced. 英語晚會將在哪里舉行，還沒有宣布。 有時為避免句子頭重腳輕，常用形式主語it代替主語從句作形式主語放于句首，而把主語從句置于句末。主語從句后的謂語動詞一般用單數形式。常用句型如下： （1） It + be + 名詞 + that從句 （2）It + be + 形容詞 + that從句 （3）It + be + 動詞的過去分詞 + that從句 （4）It + 不及物動詞 + that 從句 另注意在主語從句中用來表示驚奇、不相信、惋惜、理應如此等語氣時，謂語動詞要用虛擬語氣“(should) +do”，常用的句型有： It is necessary (important, natural, strange, etc.) that … It is suggested (requested, propod, desired, etc.) that… 三、賓語從句名詞從句用作賓語的從句叫賓語從句。引導賓語從句的關聯詞與引導主語從句表語從句的關聯詞大致一樣，在句中可以作謂語動詞或介詞及非謂語動詞的賓語。 1. 由連接詞that引導的賓語從句 由連接詞that引導賓語從句時，that在句中不擔任任何成分，在口語或非正式的文體中常被省去，但如從句是并列句時,第二個分句前的that不可省。例如： He has told me that he will go to Shanghai tomorrow. 他已經告訴我他明天要去上海。 We must never think (that) we are good in everything while others are good in nothing. 我們決不能認為自己什么都好，別人什么都不好。 注意：在demand、order、suggest、decide、insist, desire, request, command, doubt等表示要求、命令、建議、決定等意義的動詞后，賓語從句常用“（should）+ 動詞原形”。例如： I insist that she (should) do her work alone. 我堅持要她自己工作。 The commander ordered that troops (should) t off at once. 司令員命令部隊馬上出發。 2. 用who，whom, which, who, what, when, where, why, how, whoever, whatever, whichever等關聯詞引導的賓語從句相當于特殊疑問句，應注意句子語序要用陳述語序。例如： I want to know what he has told you. 我想知道他告訴了你什么。 She always thinks of how she can work well. 她總是在想怎樣能把工作做好。 She will give whoever needs help a warm support. 凡需要幫助的人，她都會給予熱情的支持。 3. 用whether或if引導的賓語從句，其主語和謂語的順序也不能顛倒，仍保持陳述句語序。此外，whether與if 在作“是否”的意思講時在下列情況下一般只能用whether，不用if： a. 引導主語從句并在句首時；b. 引導表語從句時；c . 引導從句作介詞賓語時；d. 從句后有“or not”時；e. 后接動詞不定式時。例如： Whether there is life on the moon is an interesting question. 月球上有沒有生命是個有趣的問題。 Everything depends on whether we have enough money. 一切要看我們是否有足夠的錢。 I wonder whether he will come or not. 我想知道他來還是不來。 Can you tell me whether to go or to stay? 你能否告訴我是去還是留？ 4. 注意賓語從句中的時態呼應，當主句動詞是現在時，從句根據自身的句子情況，而使用 不同時態。例如： I know (that) he studies English every day. （從句用一般現在時） I know (that) he studied English last term. （從句用一般過去時） I know (that) he will study English next year. （從句用一般將來時） I know (that) he has studied English since 1998. （從句用現在完成時） 當主句動詞是過去時態（could, would除外），從句則要用相應的過去時態，如一般過去時，過去進行時，過去將來時等；當從句表示的是客觀真理，科學原理，自然現象，則從句仍用現在時態。例如： The teacher told us that Tom had left us for America． 5. think, believe, imagine, suppo等等動詞引起的否定性賓語從句中，要把上述主句中的動詞變為否定式。即將從句中的否定形式移到主句中。例如： We don’t think you are here. 我們認為你不在這。 I don’t believe he will do so. 我相信他不會這樣做。 四、表語從句在復合句中，位于系動詞之后作表語的從句叫表語從句。引導表語從句的關聯詞與引導主語從句的關聯詞大致一樣，表語從句位于連系動詞后，有時用as if引導。其基本結構為：主語 + 系動詞 + that從句。例如： The fact is that we have lost the game. 事實是我們已經輸了這場比賽。 That’s just what I want. 這正是我想要的。 This is where our problem lies. 這就是我們的問題所在。 That is why he didn’t come to the meeting. 那就是他為什么不到會的原因。 It looks as if it is going to rain. 看上去天要下雨了。 需要注意的，當主語是reason時，表語從句要用that引導而不是becau。例如： The reason why he was late was that he misd the train by one minute this morning . 【注意】whether 可引導表語從句，但與之同義的if卻通常不用于引導表語從句。 五、同位語從句同位語從句說明其前面的名詞的具體內容。同位語從句通常由that引導，可用于同位語從句的名詞有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promi、question、request、suggestion、truth、wish、word等。例如： The news that we won the game is exciting. 我們贏得這場比賽的消息令人激動。 I have no idea when he will come back home. 我不知道他什么時候回來。 The thought came to him that Mary had probably fallen ill. 他想到可能瑪麗生病了。 同位語從句和定語從句的區別： that作為關系代詞，可以引導定語從句，充當句子成分，在從句中作賓語時可以省略； that引導同位語從句時，起連詞的作用，沒有實際意義，不充當句子成分，一般不能省略。 試比較下面兩個例句: I had no idea that you were here．（that引導同位語從句，不能省略） Have you got the idea（that）this book gives you of life in ancient Greece？（that引導定語從句，作賓語，可以省略） 六、名詞性that-從句（1）由從屬連詞that引導的從句叫做名詞性that-從句。That只起連接主句和從句的作用，在從句中不擔任任何成分，本身也沒有詞義。名詞性that-從句在句中能充當主 語、賓語、表語、同位語和形容詞賓語，例如： 主語：That she is still alive is her luck. 她還活著全靠運氣。 賓語：John said that he was leaving for London on Wednesday. 約翰說他星期三要到倫敦去。 表語：The fact is that he has not been en recently. 事實是近來誰也沒有見過他。 同位語：The fact that he has not been en recently disturbs everyone in his office. 近來誰也沒有見過他，這一事實令辦公室所有的人不安。 形容詞賓語：I am glad that you are satisfied with your job. 你對工作滿意我感到很高興。 2）That-從句作主語通常用it作先行詞，而將that-從句置于句末，例如： It is quite clear that the whole project is doomed to failure. 很清楚，整個計劃注定要失敗。 It's a pity that you should have to leave. 你非走不可真是件憾事。 用it作形式主語的that-從句有以下四種不同的搭配關系： a. It + be +形容詞+ that-從句 It is necessary that… 有必要…… It is important that… 重要的是…… It is obvious that… 很明顯…… b. It + be + -ed 分詞+ that-從句 It is believed that… 人們相信…… It is known to all that… 眾所周知…… It has been decided that… 已決定…… c. It + be +名詞+ that-從句 It is common knowledge that… ……是常識 It is a surpri that… 令人驚奇的是…… It is a fact that… 事實是…… d. It +不及物動詞+ that-從句 It appears that… 似乎…… It happens that… 碰巧…… It occurred to me that… 我突然想起…… 七、名詞性wh-從句1）由wh-詞引導的名詞從句叫做名詞性wh-從句。Wh-詞包括who, whom,. who, whoever, what, whatever, which, whichever等連接代詞和where, when, how, why等連接副詞。Wh-從句的語法功能除了和that-從句一樣外，還可充當介詞賓語、賓語補語和間接賓語等，例如： 主語： How the book will ll depends on its author. 書銷售如何取決于作者本人。 直接賓語：In one's own home one can do what one likes. 在自己家里可以隨心所欲。 間接賓語：The club will give whoever wins a prize. 俱樂部將給得勝者設獎。 表語： My question is who will take over president of the Foundation. 我的問題是誰將接任該基金會主席職位。 賓語補足語：She will name him whatever she wants to. 她高興給他起什么名字就取什么名字。 同位語： I have no idea when he will return. 我不知道他什么時候回來。 形容詞賓語：I'm not sure why she refud their invitation. 我尚不能肯定她為什么拒絕他們的邀請。 介詞賓語： That depends on where we shall go. 那取決于我們去哪兒。 2）Wh-從句作主語也常用先行詞it做形式主語，而將wh-從句置于句末，例如： It is not yet decided who will do that job. 還沒決定誰做這項工作。 It remains unknown when they are going to get married. 他們何時結婚依然不明。 八、if, whether引導的名詞從句 1）yes-no型疑問從句從屬連詞if, whether引導的名詞從句是由一般疑問句或選擇疑問轉化而來的，因此也分別被稱為yes-no型疑問句從句和選擇型疑問從句，其功能和wh-從句的功能相同， 例如： 主語：Whether the plan is feasible remains to be proved. 這一計劃是否可行還有待證實。 賓語：Let us know whether / if you can finish the article before Friday. 請讓我們知道你是否能在星期五以前把文章寫完。 表語：The point is whether we should lend him the money. 問題在于我們是否應該借錢給他。 同位語：They are investigating the question whether the man is trustworthy. 他們調查他是否值得信賴。 形容詞賓語： She's doubtful whether we shall be able to come. 她懷疑我們是否能夠前來。 介詞賓語： I worry about whether he can pass through the crisis of his illness. 我擔心他是否能度過疾病的危險期。 2）選擇性疑問從句選擇性疑問從句由關聯詞if/whether…or或whether…or not構成，例如： Plea tell me whether / if they are Swedish or Danish. 請告訴我他們是瑞典人還是丹麥人。 I don't care whether you like the plan or not.我不在乎你是否喜歡該計劃。 if和whether的區別： 1、 在動詞不定式之前只能用whether 。如： 例8 I can’t decide whether to stay. 我不能決定是否留下。 2、 在whether …… or not 的固定搭配中。如： 例9 I want to know whether it’s good news or not . 我想知道是否是好消息。 3 、在介詞后，只能用whether。如： 例10 His father is worried about whether he lo his work . 他的父親擔心是否會失去工作。 4、賓語從句放在句首表示強調時，只能用whether 。如： Whether this is true or not, I really don’t know. 這是否真的，我真的不知道。 （例11 Whether they can finish the work on time is still a problem . 他們是否能準時完成這項工作還是個問題。－－此例為主語從句，有誤，感謝指出） 5、用if會引起歧義時，只用whether。如： 例12 Could you tell me if you know the answer ? 這句話有兩種意思：“你能告訴我是否知道答案嗎？”或“如果你知道答案，請告訴我，好嗎？”。如用whether可避免歧義. 九、否定轉移1) 將think, believe, suppo, expect, fancy, imagine等動詞后面賓語從句的否定詞轉移到主句中，即主句的謂語動詞用否定式，而從句的謂語動詞用肯定式。 I don't think I know you. 我想我并不認識你。 I don' t believe he will come. 我相信他不回來。 注意：若謂語動詞為hope,賓語從句中的否定詞不能轉移。 I hope you weren't ill. 我想你沒有生病吧。 2) 將em, appear 等后的從句的否定轉移到前面。 It doesn't em that they know where to go. 看來他們不知道往哪去。 It doesn't appear that we'll have a sunny day tomorrow. 看來我們明天不會碰上好天氣。 3) 有時將動名詞，介詞短語或整個從句的否定轉變為對謂語動詞的否定。 I don't remember having ever en such a man. 我記得從未見過這樣一個人。 (not否定動名詞短語 having…) It's not a place where anyone would expect to e strange characters on the street. 在這里，人們不會想到在街上會碰上陌生的人。 (anyone 作主語，從句中的謂語動詞不能用否定形式。) 4) 有時狀語或狀語從句中否定可以轉移到謂語動詞前。 The ant is not gathering this for itlf alone. (否定狀語) 螞蟻不只是為自己采食。 He was not ready to believe something just becau Aristotle said so. (否定becau狀語) 他并不因亞里斯多德說過如何如何，就輕信此事。 She had not been married many weeks when that man's younger brother saw her and was struck by her beauty. (否定狀語many weeks) 她結婚還不到幾個星期，這個人的弟弟就看見她了，并對她的美貌著了迷。
高中英語課文選修八第一單元第一篇文章中的名詞性從句有哪些？
一， 主語從句
主語從句在復合句中作主句的主語，常用it作形式主語。引導主語從句的詞：that， whether， who, what, which, whoever, whatever, whichever, when, why, where, how等。
It suddenly occurred to him that he hadn’t finished his assignment.
It doesn’t matter whether you hand in your homework this week or next week.
名詞性從句
二， 賓語從句
1. 由關聯詞that引導的賓語從句。
由關聯詞that引導的賓語從句時， that在句中不充當任何成分，在口語或非正式的文體中常被省去，但如果從句是并列句時，第二個分句前的that不可省略。
He said (that) he was innocent and that should be t free immediately.
2. 由who， whom, which, who, what, when, where, why, how, whoever, whichever等關聯詞引導的賓語從句，應注意句子的語序要用陳述語序。
I want to know what he said to you yesterday.
3. 在賓語從句中，引導詞whether和if 基本一樣，但介詞后的賓語從句多用whether。
I will e whether/if she is at home.
Everything will depend on whether the negotiation will go on smoothly.
校園時光
三， that，what引導賓語從句的區別
在賓語從句中， that沒有詞義，在句中不作任何成分。當從句意義完整，不缺任何成分時，往往選用that；而what引導賓語從句時，意為“什么” ，有時候可以不譯，在從句中作主語或賓語。
You should pay attention to what is mentioned above.
The story tells us that everybody should spare no effort to achieve what he wants.
四， Like, hate, appreciate引導賓語從句
有些動詞或動詞短語，如like, hate, appreciate,depend on ,e to 等，一般不直接跟賓語從句，需要在從句前加上it。
I would appreciate it if you could take my suggestions into consideration.
I don’t like it when you look at me like that.
五， 表語從句
引導表語從句的詞有that， whether， who, what, which, whoever, whatever, whichever, when, why, where, how，becau等。
China is no longer what she ud to be in the old society.
One reason for her preference for the city life is that she can have easy access to places like shops and restaurants.
六， 同位語從句
同位語從句常放在fact， news， doubt, problem, promi, idea等名詞后面，常用引導詞有that，who， whether， why， when, where等。
I made a promi to mylf that this year , I will make a big difference to mylf.
希望我能幫助你解疑釋惑。
高中英語名詞性從句和定語從句的語法總結（詳細一點）
名詞性從句是由if, whether, that 和各種疑問詞充當連接詞所引導的從句,其功同名詞一樣.
一．主語從句
主語從句是在復合句中充當主語的從句,通常放在主句謂語動詞之前或由形式主語it代替,而本身放在句子末尾.
1. It 作形式主語和it引導強調句的比較
It 作形式主語代替主語從句,主要是為了平衡句子結構,主語從句的連接詞沒有變化.而it引導的強調句則是對句子某一部分進行強調,無論強調的是什么成分,都可用連詞that.被強調部分指人是也可用who/whom.
2. 用it 作形式主語的結構
(1) It is ＋名詞＋從句
(2) it is ＋形容詞＋從句
(3) it is ＋不及物動詞＋從句
(4) it ＋過去分詞＋從句
3. 主語從句不可位于句首的五種情況
(1) if 引導的主語從句不可居于復合句句首.
(2) It is said , (reported) …結構中的主語從句不可提前.
(3) It happens…, It occurs… 結構中的主語從句不可提前.
(4) It doesn’t matter how/whether …結構中的主語從句不可提前.
(5) 含主語從句的復合句是疑問句時,主語從句不可提前.
4. What 與that 在引導主語從句時的區別
What 引導主語從句時在句時在從句中充當句子成分,如主語．賓語．表語,而that 則不然.
定語從句也稱為關系從句或形容詞性從句,由關系代詞（who, whom, who, which, that）或關系副詞（as, when, where, why）等引導.關系詞除了起引導作用外,還在從句中指代前面的先行詞,并在從句中擔任一定的成分.
一、限定性定語從句和非限定性定語從句
定語從句就其與先行詞的關系而言,可分為限定性定語從句和非限定性定語從句.限定性定語從句和先行詞之間沒有逗號,表示對先行詞起修飾限制作用；而非限定性定語從句和先行詞之間有逗號分開,是對先行詞進行補充說明,相當于并列句.如：
He is the man who has strong personality. 他是個個性很強的人.（限定性定語從句）
My brother, who works abroad, is coming next week. 我哥哥在國外工作,他下周將回來.（非限定性定語從句）
注：1. 非限定性定語從句不能用that來引導,一般用which,as或who（指人）.用which或as引導時,既可以修飾主句的部分內容,也可修飾主句的全部內容.如：
He spoke confidently, which impresd me most. （which指代整個主句,在從句中作主語）
2. as引導的非限定性定語從句既可以放在主句之前,也可以放在主句之后,但which或who引導的非限定性定語從句不能放在主句之前.如：
As we all know, the moon is a satellite of the earth.
The large area is covered with thick snow, which affects people's life greatly.
3. 在限定性定語從句中,關系代詞作賓語時可以省略；但在非限定性定語從句中,關系代詞作賓語時不能省略.如：
The film (which) I saw last night is about a young teacher. (which可以省去)
She introduced me to her husband, whom I hadn’t met before. (whom不能省去)
二、通常只用關系代詞that,不用 which,who或whom的幾種情況
1. 當先行詞是all, everything, nothing, something, anything, little, much, none, few等時.如：
All that you want are here.
2. 當先行詞被all, no, some, any, every, a few, a little, much, only, very等修飾時.如：
There is no person that doesn’t make mistakes.
3. 當先行詞被序數詞或形容詞最高級修飾時.如：
This is the best film that I have ever en.
4. 當出現兩個或兩個以上的先行詞,并同時兼指人和物時.如：
We are talking about the people and countries that we have visited.
5. 當主句是以which 或 who 開頭的特殊疑問句時.如：
Who is the person that is standing over there?
6. 當定語從句為there be 句型時,關系代詞只能用that,但經常可以省略.如：
I know the difference (that) there is between you.
7. 當關系代詞在從句中作表語時,常用that.如：
He does not em to be the man that he was. 他似乎和過去不一樣了.
三、as 與其他詞連用引導的定語從句
as 引導定語從句時,可指人也可指物,通常與the same,such,so等連用,形式為：the same… as,such… as,as …as,so… as.As在定語從句中可作主語、賓語、表語等.如：
She knew he felt just the same as she did. 她知道他的感覺與她自己的一樣.(as代替事,作賓語)
I lend you such books as will interest you. 我借給你使你感興趣的書.(as代替物,作主語)
注：the same… as 和the same… that的用法不同.as引導的定語從句表示其內容與主句所講的事物“相似”,指同類事物；that引導的定語從句表示其內容與主句所講的事物是“同一個”,指同一事物.如：
This is the same pen as I lost yesterday. 這和我昨天丟的筆一樣.（類似的筆）
This is the same pen that I lost yesterday. 這支筆就是我昨天丟的那支.（同一支筆）
四、“介詞+關系代詞”引導的定語從句
在“介詞+which/whom”結構中,介詞的選擇取決于三種情況：
1．定語從句中謂語動詞或表語的搭配.如：
This is the college in which I am studying.
He is the man about whom we are talking.
2．先行詞與介詞的習慣搭配.如：
The speed at which the machine operates is shown on the meter. 儀表上顯示出這臺機器運轉的速度.
3．當定語從句為最高級時只能用of which; 否則用其他介詞.如：
I have five dictionaries of which Longman Dictionary is the best.
I have five dictionaries among which Longman Dictionary is published in UK.
注：不可拆分的動詞短語介詞不能提前,如put up with；有的短語可能有不同的介詞搭配,此時需要根據上下文來確定.如：be familiar with/to,compare with/to等.
有時為表意清楚,還可以在關系副詞where/ when前加介詞from, to等.如：
China is the birthplace of kites, from where kite flying spread to Japan, Korea, Thailand and India. 中國是風箏的故鄉,從這里,放風箏的運動傳到了日本、韓國、泰國和印度.
如何學好高中英語名詞性從句?
什么是英語名詞性從句呢？英語名詞性從句是歷年高考中的重點難點，也是最大的熱點。名詞性從句即把名詞可用作主句的主語、表語、賓語和同位語。因此，名詞性從句也分為主語從句、表語從句、賓語從句和同位語從句。
可能有些剛升入高中進行學習的同學還不太了解，英語名詞性從句作為高中英語學習階段最為重要的考點之一，極有可能會在未來的高考中影響到你最終的考試成績，從而直接決定你未來大學的層次所在。這樣重要的內容自然是不允許被人忽略的，所以無論是在學校課堂里，還是在課外補習班中，老師們都會一遍遍強調英語名詞性從句學習的重要性。
那么，我們要如何為學習英語名詞性從句做好準備呢？小編個人認為，學習者首先需要擁有一定的英語基礎，因為名詞性從句屬于高中英語學習階段的難度較高的知識點，如果學習者英語基礎薄弱的話，就會很難在規定時間中掌握好它。與此同時，學習者還需要搞清楚主語、表語、賓語和同位語這些專業詞匯的含義，這就涉及到語文方面的一些基礎知識了。
做好了一切學習準備后，就要開始進行正式的名詞性從句學習了。在這一過程中，我們要怎樣做才可以學好它呢？首先，你需要擁有絕對的耐心和毅力才可以完成這一次的學習，這是因為如果想要在考試中將名詞性從句相關考點的題全部做對的話，就必須得去進行大量題型的練習。其次，對于學習任務繁重的高中學生來說，在學習英語名詞性從句時還需要為其空出一定的時間，畢竟，類似于這類語法知識的學習還是需要整塊整塊的時間的，它不像單詞學習那樣可以利用零碎時間來進行學習。最后，除了要熟練掌握英語名詞性從句的理論知識外，還要學會在實際操作中應用它，這一點對于高中生來說可能確實有些難度，但小編相信，沒有克服不了的難關，只要學習者肯付出，那么就一定會有不小的收獲。
有些學生可能會覺得類似于英語名詞性從句這種理論性知識是在實際生活中運用不到的，如果你也這樣想的話，那么就是大錯特錯了。如果想要徹底融入進英語語言的文化環境，那么適當掌握一些較為復雜的語法句式就是非常有必要的。雖說很多口語表達都是比較簡單的句子，但是在比較正式的場合中，像名詞性從句這樣的句式就會派上很大用場了，也正因此，我們更是很有必要去學好它了。
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求 高中英語名詞性從句的區別及注意事項
名詞性從句一.概念：在從句中起名詞作用的從句即名詞性從句。它們是：主語從句，賓語從句，同位語從句和表語從句。二.引起名詞性從句的連詞：1.that 無意義，只起倒引起從句的作用，如引導賓語從句可省略。That he beat his opponent in the tennis game encouraged his teammates.He said (that) another child was infected with bird flu.The fact is that he knows nothing about it.應用于Her dream that she will become a woman astronaut is sure to come true. 2.what 有意義，”所……的”或隨句子意思而定。在從句中作主語，賓語和表語。 What makes her different from others is her strange behaviour. This is what I want to say. Plea tell me what it is. 3.whether 有意義，“是否”，引導賓語從句可以用if。 Whether it is true is not certain. He asked me whether/if he could ask another question. 4.when 引起表示時間的名詞性從句，意思是“……的時候”或“何時……” When we can get rid of the rubbish is still unknown. They didn’t know when they could meet again. The question is when the money can be collected. 5.where 引起表示地點的名詞性從句，意思是“在……的地方”或“到……的地方” Where the meeting will be held hasn’t been decided. Everyong wants to know where the plant can be found. 6.how 引起表示方式的名詞性從句，意思是“……的方式”或“如何……” The problem is how we can get out of the trouble. How we can get in touch with him is the most important. 7.why 引起表示原因的名詞性從句，意思是“……的原因”或 “為什么……” Why he said that rubbish at the meeting puzzled me. At last,he told us why he didn’t agree with us. 8.who “誰” ,whom“誰”，who“誰的” Who will be chon is the topic of conversation now. I want to know who/whom you really want to e. Who handwriting is the most beautiful is very clear now. 9.疑問詞+ever 也可以引起名詞性從句 Whatever was said here must be kept cret. Whoever fails to e this will make a big mistake. I’ll give it to whoever likes it. Parents shouldn’t give their children whatever he/she wants.三. 名詞性從句的種類：四種——主語從句，賓語從句，同位語從句和表語從句1. 主語從句：在復合句中充當主語的從句叫主語從句，上述引導詞除if外均可引起主語從句。 Who has been chon is still a cret to all. That one believes in onelf in doing everything is very important.注意：主語從句如果偏長，可將其移至謂語動詞之后，前面用it作形式主語。That he is an honest boy is known to all.→It is known to all that he is an honest boy.That the Chine volleyball team once won six world championships successively is true.→It is true that the Chine volleyball team once won six world championships. 在It is insisted/ordered/commanded/suggested/advid/propod/demanded/required/requested…that…結構中，謂語動詞常用should+動詞原形。如：It is suggested that we should think twice before we act. It is requested that we should change the old instrument. 另外，在It is necessary/important/strange/surprid that…或 It is a pity/shamethat… 也用 should + 動詞原形 如：It is a pity that he should go without telling anyone. It is necessary that you should tell him the truth. 2. 賓語從句：在復合句中作賓語的從句叫賓語從句，以上連詞都可引起賓語從句。 Everyone knows that he always gives answers and never ask questions,so he is called Mr Know-all.賓語從句應注意的幾個問題：① 當一個動詞帶有兩個或兩個以上that 引導的賓語從句時，第一個that 可以省略，但從第二個開始不可以省略。 He said (that) he would spend his winter holiday in London this year and that it would be the first time he would spend his holiday alone abroad.② 當賓語從句有補語時，要用形式賓語it代替，而將賓語從句移至補語后，同時that不可省略。 We should make it clear that protecting the environment is everyone’s duty.We find it important that one forms a good habit.③ 在tell sb. that…; order sb.that…; remind sb.that…; explain to sb. that…; whisper to sb. that…等結構中that 不可省。 He told me that he was going abroad next month. He whispered to me that the man in blue is a policeman.④ 在be+adj.后的賓語從句中，that 可以省略。 I’m glad (that) I’ll e all my fiends soon. I’m sure (that) he will stand on our side.⑤ whether和if 均能引起賓語從句，但是if 只能在動詞后，在介詞后要用whether。 He asked whether/if we could do him a favour. We wondered whether/if he would come or not.---Will you come tomorrow?---Sorry,I really don’t know. It depends on whether it is raining (or not).⑥ 賓語從句在時態上要求與主句一致（即時態呼應），也就是說主句為一般現在時，從句可用任何時態；如從句為一般過去時態，主句應為過去時的某種時態。當然，從句為普遍真理和自然現象者例外. He says that he lives around the corner. He says that he has been here for a long time. He says that he once worked as a cook. He says that he is expecting his father’s telephone. He said that he was learning English for the 2008 Beijing Olympic Games. He said that he would go abroad for further information. He said that it does not snow in winter in Australia.⑦ 在某些動詞后的賓語從句中用虛擬語氣，其結構為should+動詞原形，should 可以省略。這些常用動詞是：一個堅決要求insist; 兩個命令order,command; 三個建議suggest,advi,propo；四個要求ask,demand,request,require 注意：insist有兩個意思“堅決要求”和“堅持認為”，前者用虛擬語氣，而后者用陳述語氣（實際時態）；同樣suggest 也有兩個意思“建議”和“表明”或“暗示”，當“建議”講時用虛擬語氣，否則用陳述語氣（實際時態）。 如：He insisted that he should go to the front.(虛擬語氣) He insisted that Tom was honest and hardworking.(陳述語氣) She suggested that she should answer the phone immediately.(虛擬語氣) The smile on her face suggested that he was satisfied with the result.(陳述語氣)上述其他動詞后一律用should+動詞原形如 They requested that an immediate answer should be given. He ordered that the troops (should) start at once.3.同位語從句：idea,fact,rumour,message,news,hope,belief,thought,doubt,proof,evid-ence，promi,probability等名詞后出現的that 或wh-引導的從句作同位語，人們稱之為同位語從句，同為語從句對所修飾得詞起解釋說明的作用。I had no idea that you were here.They expresd the hope that they would visit China again.There is no doubt that he is not fit for the job.The question how they could get the information was brought forward at the meeting .The government warned that the rumour that an earthquake would hit Harbin was not believable.在下列同位語從句中，謂語動詞用should+動詞原形：One’s suggestion /advice/order/requirement/request/that… 如：My suggestion that we should collect money for the poor girl has been taken.4.表語從句：由that, as if, wh-等引起的作表語的從句叫做表語從句。 The manager’s suggestion is that the new products should be put in market as soon as possible. The fact remains that we are behind some developed countries. It ems /appears as if the problem has been ttled. That’s what we should do. Asia is no longer what it ud to be. That’s where we differ. That was how we were defeated. That was when our football team was formed. That was why we decided to put off the discussion. 在下列表語從句中，謂語動詞用should+動詞原形： One’s suggestion/requirement/order… is that… 如：My suggestion is that we should give him another chance. Her requirement is that she should be nt to Tibet to work.四. 解題要點： ①如果從句意思完整，須用that,因為that 不作成分。 ②在涉及到“是否……”時用whether,if只用在動詞后的賓語從句中，而且也可以換成whether. ③that和what不可混淆，that無意義，不作成份；what有意義，做成分 ④that的不可省。
