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主語從句在復(fù)合句中做句子的主語。引導(dǎo)主語從句的詞有連詞that, whether; 連接代詞 who, what, which; 連接副詞 when, where, how, why等。接下來給大家羅列幾個經(jīng)典的主語從句例句。 如： What is needed for the space trip is careful preparation. Whether wild life can be well protected is of great importance. Who will go makes no differences. Why dinosaurs died out

主語從句在復(fù)合句中做句子的主語。引導(dǎo)主語從句的詞有連詞that, whether; 連接代詞 who, what, which; 連接副詞 when, where, how, why等。接下來給大家羅列幾個經(jīng)典的主語從句例句。 如： What is needed for the space trip is careful preparation. Whether wild life can be well protected is of great importance. Who will go makes no differences. Why dinosaurs died out

語學(xué)習(xí)的過程中需要大量的積累單詞和掌握語法，主語從句的引導(dǎo)詞 主語從句

語學(xué)習(xí)的過程中需要大量的積累單詞和掌握語法，主語從句的引導(dǎo)詞 主語從句

天和大家來分享的是英語語法知識當(dāng)中的主語從句(Subject Clause)， 主語從句即在主從復(fù)合句中充當(dāng)主語成分的句子。對此還不太了解的，今天可以一起來往下看看。 It is important. That we all should attend the meeting is important. It is important (that) we all should attend the meeting. 主語從句的連詞 1、連詞that(句首不可省略)，whether，if引導(dǎo)的主語從句。 That the earth is round is true. It is true that the earth is round. That you missed such an interesting film is a pity. It is a pity that you missed such an interesting film. That she is still alive is sheer luck. It is sheer luch that she is still alive. It remains unknown whether/if we will go for an outing tomorrow. 注意：whether/if含有“是否”的意思，可以加上“or not”，其語義不變。但如果主語從句位于句首則必語課程，可以讓自己掌握更多的知識，提升英語水平。今天和大家來分享的是英語語法知識當(dāng)中的主語從句(Subject Clause)， 主語從句須用連接詞whether，不用if。 If the meeting will be put off hasn't been decided yet. (X) Whether the meeting will be put off hasn't been decided yet. (√) It is still a question whether/if it is true or not. Whether it is true or not is still a question. 2、連接代詞who，whose，what，which，wh+ever引導(dǎo)的主語從句。 Who will come to teach the students is not known. Whom the watch belongs to is unknown. Whose watch was lost is unknown. Whatever he said wasn't true. 3、連接副詞 where，when，how，why引導(dǎo)的主語從句。 Where the library is to be built has not been decided yet. When we start the work is an important question. How this happened is not clear. Why she was late for school is quite clear now. 注意：主語從句中的連詞不能重疊使用。 That whether we'll go camping tomorrow depends on the weather. (X) Whether we'll go camping tomorrow depends on the weather. (√) 主語從句的語序 主語從句的語序用陳述語序 When will she come is not known.(X) When she will come is not known. (√) What we need is more time. (√) What do we need is more time.(X) 主語從句的時態(tài) 主語從句的時態(tài)不受主句時態(tài)影響和限制。 What caused the accident remains unknown. What he did yesterday will never be known by his mother. It is certain that he will win the match. It is suggested that the work should be done with great care. 主語從句的注意事項 1. 主語從句的謂語一般用單數(shù)形式; When the meeting will be held haven't been known yet.(X) When the meeting will be held hasn't been known yet. (√) When he will come is a puzzle. (√) 2. What引導(dǎo)的主語從句，可根據(jù)表語決定主句動詞的單復(fù)數(shù)形式; What he needs is that book. What he needs are some books. 3. What引導(dǎo)的主語從句一般不可以改為含形式主語的句子，that則可以; What you said yesterday is right. It is right what you said yesterday.(X) That she is still alive is certain. It is certain that she is still alive. (√) 4. 常見用it做形式主語的主語從句 It is known to all that the gunpowder was first invented by the Chinese. It is true that he has made a very important discovery in chemistry. It is important that we all should attend the meeting. It is a pity that we won't be able to go to the south to spend our summer vacation. It is doubtful whether she will be able to come. It is said that he has gone to Shanghai. It is still a mystery what caused the accident. It seems obvious that we can not go on like this. 如果你想選擇線上英語課來進(jìn)行培訓(xùn)，大家可以來網(wǎng)校了解了解相關(guān)的課程和資訊。如果您對英語學(xué)習(xí)感興趣，想要深入學(xué)習(xí)，可以了解滬江網(wǎng)校精品課程，量身定制高效實用的個性化學(xué)習(xí)方案，專屬督導(dǎo)全程伴學(xué)，掃一掃領(lǐng)200暢學(xué)卡。

有時為了考慮句子平衡，通常在主語從句處使用形式主語it，而將真正的主語從句移至句末。分以下幾種情況： (1)?對于以連詞that引導(dǎo)的主語從句，通常用形式主語代主語從句： It?is?important?that?he?should?know?about?this.?他必須知道此事。 It’s?vital?that?we?be?present.?我們出席是至關(guān)重要的。 It?was?intended?that?you?be?the?candidate.?大家的意圖是讓你當(dāng)候選人。 It?is?important?that?this?mission?not?fail.?這項使命不句子平衡，通常在主語從句處使用形式主語it，而將真正的主語從句移至句末。分以下幾種情況： (1)?對于以連詞that引導(dǎo)的主語失敗至關(guān)重要。 It?is?essential?that?a?meeting?be?convened?this?week.?本周開一次會非常重要。 It?is?appropriate?that?this?tax?be?abolished.?廢除這個稅是恰當(dāng)?shù)摹?It’s?unfair?that?so?many?people?should?lose?their?jobs.?竟有這么多人失業(yè)這是不公平的。 It’s?amazing?that?she?should?have?said?nothing?about?it.?她竟未談及此事令人驚訝。 It’s?unthinkable?that?they?should?deny?my?request.?他們竟然拒絕我的請求，這是不可思議的。 (2)?對于以連接代詞(副詞)引導(dǎo)的主語從句，可以使用形式主語代主語從句，也可直接在句首使用主語從句： It?was?a?problem?whether?they?would?support?us.?他們是否會支持我們還是一個問題。 It?remains?to?be?seen?whether?it?will?do?us?harm?or?good.?它對我們是利是害，還得看看再說。 (3)?對關(guān)系代詞型what引導(dǎo)的主語從句，通常直接將主語從句放在句首。如： What?I?want?to?know?is?this.?我想知道的就是這一點。 有時也可將助用形式主語。如： It?is?clear?enough?what?he?meant.?他是什么意思很清楚。 (4)?如果句子是疑問句，則必須用帶形式主語it的結(jié)構(gòu)： Is?it?true?that?he?is?the?girl’s?father??他是那女孩的父親，是真的嗎？ How?is?it?that?you?are?late?again??你怎么又遲到了？

主語從句與賓語從句兩者的用法和在句中的作用是各不同的，我們需要對其區(qū)分，下面，小編就從定義和用法上來為大家介紹主語從句的相關(guān)語法知識，一起來看看吧。 主語從句定義：在句子中擔(dān)當(dāng)主語的是一個從句，這個從句就叫做主語從句。 主語從句是在復(fù)合句中充當(dāng)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。 It 作形式主語和it引導(dǎo)強調(diào)句的比較 ①主語從句常用it作形式主語，一般常用句型為：It is+{名詞/形容詞/過去分詞}+主語從句例如： It is still a question whether she will come or not. It is strange that you should like him. It is still unknown which team will win the match. 另外，還有一些比較多見的結(jié)構(gòu)： It turned out that……; It has been proved that……; It happened/occurred that……; It is well-known that……等等 ②而強調(diào)句則不同，它的結(jié)構(gòu)是：It+be+被強調(diào)部分+that+從句 強調(diào)主語：It is the times that produce their heroes.時勢造英雄 強調(diào)賓語：It is English that Prof.Lin teaches us. 強調(diào)狀語：It was in shanghai that I saw the film. 判斷是否是強調(diào)句有一個方法，就是將that以后的“句子的其余部分”拿出來單獨看，看有沒有缺成分，缺的是什么成分，再把謂語動詞后面that前面的那部分，帶主語從句與賓語從句兩者的用法和在句中的作用是各不同的，我們需要對其區(qū)分，下面，小編就從定義和用法上來為大家介紹主語從句到你認(rèn)為缺成分的地方，如果放進(jìn)去是一句完整的句子了，那就說明是強調(diào)句。 看完了小編為同學(xué)們整理的語法知識，大家是不是對主語從句對了一份了解了呢？趕快收藏起來吧~

到了主語從句和表語從句。我們今天來講講主語從句，表語從句且待下回分解。 所謂主語從句，簡單的說就是用一句話來代替主語。例如： a)What you see is what you get. 所見即所得。 b)When the plane is to take off has not been announced yet. 飛機何時起飛尚未公布。 從上面的例子我們發(fā)現(xiàn)，主語從句的謂語動詞一般用第三人稱單數(shù)，例如上面例子中的is和has。 剛剛我們介紹的這種用疑問詞引導(dǎo)的主語從句比較平易近人，在平時生活中也能見到。下句話里同時用到了主語從句面的這兩種就相對高大上了，通常出現(xiàn)在非常正式場合。 引導(dǎo)的主語從句 a)That they survived the accident is a miracle.他們能在事故中幸存下來是個奇跡。 b)That he finished homework in such a short time surprised us all. 他這么快就完成作業(yè)讓我們?nèi)几械襟@訝。 需要注意的是，這些句子中的that不能省略。那么什么時候that可以省略呢？請看下面這種主語從句： 2.主語從句常用it作形式主語，真正的主語放在后面，這時that可省略，尤其是在口語中。 a)It's a pity (that) you missed such a good opportunity. 真遺憾你錯過了這么一個好機會。 b)It is said (that) the president will visit our company. 據(jù)說總統(tǒng)會訪問我們公司。

可以在主句前加譯這。如： 例題3：It can be seen that precleaning alone would not reduce the total sulfur content of the four coals to levels anywhere near the standards. 分析：這樣的句子可以譯成無人稱句，常用來表示事實，常理等。 參考譯文：可以看出，這四種煤的總含硫量僅靠預(yù)先洗選將不能降低到完全接近標(biāo)準(zhǔn)規(guī)定的水平。 例題4：It is a matter of common experience that bodies are lighter in water than they are in air. 分析：有時為了使譯文成分完整，可以補充上泛指的主語（如人們…、大家…）。類似的結(jié)構(gòu)還有：it is（universally）known that…大家都知道…it is believed that…人們都 相信…。 參考譯文：物體在水中比在空氣中輕，這是一種大家共主語從句是英語中的一種特殊句型，我們在翻譯時要格外注意，滬江小編今天為同學(xué)們帶來的是有關(guān)英語中主語從句有的經(jīng)驗。 以上翻譯主語從句的技巧，大家要好好注意記憶和聯(lián)系，多多回顧、多多思考。喜歡就收藏起來吧~

主語從句是名詞性從句的一種，指的是用來充當(dāng)全句主語的句子，有時還會使用it充當(dāng)形式主語，主語從句的使用率很高，在各類考試中的出現(xiàn)率也很高，但掌握起來并不容易，所以小編這次就為大家準(zhǔn)備了主語從句特殊的引導(dǎo)詞用法講解，一起來看看吧！ whichever： whichever引導(dǎo)主語從句時，相義相當(dāng)于any that, anyone who，通常譯為“無論哪個……都”“無論誰……都”。 eg. Whichever you want I will buy you. 你想要哪個我就買那個給你。 whichever有時還可以修飾名詞或后接表示范圍的of短語。 eg. Whichever of them gains the most points wins. 他們中哪一個得分最多，哪一個就贏。 whoever: ? whoever引導(dǎo)主語從句時，意義相當(dāng)于anyone who，即表示“任何人……都”“誰……誰就（都）”“不管是誰……那都”。 eg. Whoever comes will be welcome. 誰來都?xì)g迎。 ????? Whoever get the gold apple will be blessed by God. 誰拿到金蘋果，誰就能受到上帝的祝福。 whatever： ? whatever引導(dǎo)主語從句時，意義相當(dāng)于anything that，通常譯為“……任何東西（一切事情）”“……所……的一切（所有）”“無論什么……都”。 eg. Whatever I have is at your service. 我所主語從句是名詞性從句的一種，指的是用來充當(dāng)全句主語的句子，有時還會使用it充當(dāng)形式主語，主語從句有的一切都供你使用。 ????? Whatever you like I will give you. 你喜歡什么我都給你。 以上就是這次的內(nèi)容了，不知道大家都掌握了嗎？看起來內(nèi)容挺多，但只要一步一個腳印，踏踏實實的學(xué)下去，就能慢慢掌握每一個知識點的。