what it is that you don't know.此名型為名詞從句,如何能確定此句為名詞從句,名詞從句有何特征?

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What it is that you don't know,強調what 強調句,當強調疑問詞時,it is ...that變成:疑問詞+is it that...本句應該是:What is it that you don't know?你不懂的究竟是什么?Why is it that you are late?How is it that you did it wrong?When was it that you return me the money?Where was it that he went?

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以上的回答好象有點問題。What it is that you don't know. 句子有問題啊。首先 what開頭,what it is是一個名詞從句,這樣的話句子便沒有了謂語動詞。如果把it和 is顛倒位置,變成 is it的話,句子應當改為問句。這是一個強調結構。句子的意思為:你不知道的是什么?不知你的句子的出處,所以只能、這樣回答了。

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名詞性從句I。 引導名詞性從句的連接詞引導名詞性從句的連接詞可分為三類:   連接詞: that, whether ,if (不充當從句的任何成分)   連接代詞:what, whatever, who, whoever, whom, whose, which 連接副詞:when, where, how, why   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。例如:     That she was chosen made us very happy。 她被選上了,我們很高興。     We heard the news that our team had won。 我們聽到消息說我們隊贏了。  比較:whether與if 均為"是否"的意思。但在下列情況下,whether 不能被if 取代: 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。 從句后有"or not"      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。例如:   It is not important who will go。 誰去,這不重要。   It is still unknown which team will win the match。 到底誰贏呢,形勢尚不明朗。 II。 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 he is still alive is sheer luck。  他還活著全靠運氣。  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 seen recently。 事實是近來誰也沒有見過他。同位語:The fact that he has not been seen recently disturbs everyone in his office。 近來誰也沒有見過他,這一情況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…… 。

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what引導的主語從句,that引導的賓語從句,意思為 這些是你不知道的事情

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語法分析非我所長……靜待高手。