17.2 名詞性that-從句
?
1)由從屬連詞that引導(dǎo)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(dān)任任何成分,本身也沒(méi)有詞義。名詞性that-從句在句中能充當(dāng)主 語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ)和形容詞賓語(yǔ),例如:
  主語(yǔ):That he is still alive is sheer luck.  他還活著全靠運(yùn)氣。
  賓語(yǔ):John said that he was leaving for London on Wednesday. 約翰說(shuō)他星期三要到倫敦去。
  表語(yǔ):The fact is that he has not been seen recently.   事實(shí)是近來(lái)誰(shuí)也沒(méi)有見過(guò)他。
  同位語(yǔ):The fact that he has not been seen recently disturbs everyone in his office.
        近來(lái)誰(shuí)也沒(méi)有見過(guò)他,這一事實(shí)令辦公室所有的人不安。
  形容詞賓語(yǔ):I am glad that you are satisfied with your job.
        你對(duì)工作滿意我感到很高興。

2)That-從句作主語(yǔ)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(gè)計(jì)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(yǔ)的that-從句有以下四種不同的搭配關(guān)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…   從所周知……
    It has been decided that…   已決定……


  c. It + be +名詞+ that-從句
    It is common knowledge that…  ……是常識(shí)
    It is a surprise that…   令人驚奇的是……
    It is a fact that…     事實(shí)是……


  d. It +不及物動(dòng)詞+ that-分句
    It appears that…      似乎……
    It happens that…      碰巧……
    It occurred to me that…   我突然想起……














 學(xué)習(xí)啦--英語(yǔ)語(yǔ)法大全