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主語(yǔ)從句用法及其講解

時(shí)間:2025-05-25 20:01:47 好文 我要投稿
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主語(yǔ)從句用法及其講解

  [尋規(guī)找矩]

  請(qǐng)觀察下列句子,注意劃線部分句子的意義及用法。

  1. What surprised me most was that the little girl could play the violin so well.

  2. Who will go to the concert is not known.

  3. That she was chosen made us very happy.

  4. Whether she will come or not is still a question.

  5. Which book they will choose is still unknown.

  6. When we shall hold our sports meet is not decided.

  7. It’s strange that he knows nothing about it.

  8. It is a pity that she has made such a mistake.

  9. It is said that President Jingo will visit our school next week.

  [小結(jié)歸納]

  (一)語(yǔ)序

  主語(yǔ)從句使用陳述語(yǔ)序,其通常結(jié)構(gòu)為“引導(dǎo)詞 + 主語(yǔ) + 謂語(yǔ) + 其他成分”;但當(dāng)連接代詞同時(shí)充當(dāng)從句主語(yǔ)時(shí),其結(jié)構(gòu)為“連接代詞 + 謂語(yǔ) + 其他成分”,如句1、2。

  (二)引導(dǎo)詞

 、 that引導(dǎo)主語(yǔ)從句時(shí)無(wú)詞義,也不充當(dāng)任何成分,但通常不可以省略,如句3;

 、 whether引導(dǎo)主語(yǔ)從句時(shí)意為“是否”,通常不能用if來(lái)代替,如句4;

  ③ 可以引導(dǎo)主語(yǔ)從句的連接代詞主要有:who,whom,whose,what,which,whatever,whoever等,如句5;

  ④ 可以引導(dǎo)主語(yǔ)從句的連接副詞主要有:where,when,how,why等,如句6。

  (三)常見(jiàn)句型

  有時(shí)為避免句子頭重腳輕,常用it作形式主語(yǔ),代替主語(yǔ)從句放在句首,而把主語(yǔ)從句置于句末。常用句型如下:

  ① It + be + 形容詞 + that 從句, 如句7;

 、 It + be + 名詞 + that 從句, 如句8;

 、 It + be + 動(dòng)詞的過(guò)去分詞 + that 從句, 如句9。

  主語(yǔ)從句學(xué)習(xí)指導(dǎo)

  [尋規(guī)找矩]

  請(qǐng)觀察下列句子,注意主語(yǔ)從句的用法。

  1. That the earth travels round the sun is a well-known fact.

  2. It is uncertain whether the artist can do it or not.

  3. Who will act the lead in the play has not been decided yet.

  4. Where the young man has gone is not known.

  5. It is not yet decided when and where the test will be given.

  [歸納總結(jié)]

  1. 引導(dǎo)主語(yǔ)從句的詞有連詞that,whether;連接代詞who,whoever,which等;連接副詞where,whenever,wherever,why等。

  2. 有時(shí)用it作形式主語(yǔ),將主語(yǔ)從句后置。

  [常見(jiàn)錯(cuò)誤展示]

  下列各句均有一處錯(cuò)誤,請(qǐng)改正并分析錯(cuò)誤的原因。

  1. Light travels faster than sound is common knowledge.

  2. If she’s coming or not doesn’t matter much.

  3. That the professor said is of great importance.

  4. Where will the trees be planted has not been decided.

  5. No matter who breaks the rule will be punished.

  6. When and where the meeting will be held still remain a question.

  7. What were your problems a year ago has now become mine.

  8. It was requested that everyone made a speech at the meeting.

  [解析與拓展]

  1. 在句首加That(并將Light改為light)。that雖無(wú)詞義但引導(dǎo)主語(yǔ)從句位于句首時(shí)不能省略。

  2. 將If改為Whether。if,whether都可表示“是否”,但if不能引導(dǎo)位于主句之前的主語(yǔ)從句,它可以引導(dǎo)位于主句之后帶有形式主語(yǔ)it的主語(yǔ)從句。

  3. 將That改為What。that引導(dǎo)主語(yǔ)從句時(shí)無(wú)詞義。What the professor said表示“教授所說(shuō)的”。

  4. 將will置于trees之后。主語(yǔ)從句要用陳述句語(yǔ)序。

  5. 將No matter who改為Whoever。引導(dǎo)讓步狀語(yǔ)從句時(shí)二者可互換,但引導(dǎo)名詞性從句時(shí)只能用whoever。

  6. 將remain改為remains。主語(yǔ)從句表示單一概念時(shí),謂語(yǔ)要用單數(shù)形式。

  7. has要改為have。主語(yǔ)從句表示復(fù)數(shù)概念時(shí),謂語(yǔ)要用復(fù)數(shù)形式。

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