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英语语法:名词性that-从句

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  • 发布时间:2012-08-13 15:18:03
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  1)由从属连词that引导的从句叫做名词性that-从句。 That只起连接主句和从句的作用,在从句中不担任任何成分,本身也没有词义。名词性that-从句在句中能充当主 语、宾语、表语、同位语和形容词宾语,例如:
    主语:That he is still alive is sheer luck.  他还活着全靠运气。
    宾语:John said that he was leaving for London on Wednesday. 约翰说他星期三要到伦敦去。
    表语:The fact is that he has not been seen recently.   事实是近来谁也没有见过他。
    同位语:The fact that he has not been seen recently disturbs everyone in his office.
         近来谁也没有见过他,这一事实令办公室所有的人不安。
    形容词宾语:I am glad that you are satisfied with your job.
         你对工作满意我感到很高兴。

  2)That-从句作主语通常用it作先行词,而将that-从句置于句末,例如:
    It is quite clear that the whole project is doomed to failure. 很清楚,整个计划注定要失败。
    It"s a pity that you should have to leave. 你非走不可真是件憾事。
    
    用it作形式主语的that-从句有以下四种不同的搭配关系:
    a. It be 形容词 that-从句
     It is necessary that    有必要
     It is important that    重要的是
     It is obvious that     很明显

    b. It be -ed 分词 that-从句
     It is believed that     人们相信
     It is known to all that   从所周知
     It has been decided that   已决定

    c. It be 名词 that-从句
     It is common knowledge that  是常识
     It is a surprise that   令人惊奇的是
     It is a fact that     事实是

    d. It 不及物动词 that-分句
     It appears that      似乎
     It happens that      碰巧
     It occurred to me that   我突然想起
  

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