“cannot...too...”结构及其他

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  请看下面一道题:
  —I was riding along the street and all of a sudden, a car cut in and knocked me down.
  —You cannot be____careful in the street.
  A. much  B. very  C. so  D. too
  分析:该题考查的是“cannot...too...”结构的用法。答案为D。题意为:
  ——我在马路上骑车,突然一辆汽车超车,撞了我。
  ——在马路上(骑车),你越小心越好。
  “cannot...too...”结构是中学英语课本中的一个重要句型。该结构表示“无论怎么……也不算过分”“越……越好”“要格外……”“应该特别……”等意义。表示此意义的句型结构有下列几种:
  1. cannot+be+too+形容词/副词
  We cannot be too careful in doing experiments.
  我们做实验越仔细越好。
  I cannot thank you too much.
  我无论怎么样感谢你也不过分。
  2. cannot+over-动词或cannot+be+over+形容词
  We cannot overemphasize the importance of learning a foreign language.
  我们无论怎么强调学外语的重要性也不过分。
  We cannot be over vigilant.
  我们应该特别警惕。
  3.cannot+动词+too much
  We cannot praise him too much.
  我们无论怎样赞扬他也不算过分。
  He is very reliable. You can't trust him too much.
  他很可靠,是最值得你信赖不过的。
  4.cannot+动词+形容词/副词+enough
  含not的结构也可被含never, hardly, scarcely等否定词的结构取代。例如:
  You can never be strong enough.
  身体越健康越好。
  Drinking water can never be pure enough.
  饮用水越纯越好。
  5.cannot+动词+too many+可数名词或cannot+动词+too much+不可数名词
  It is wrong to think that one cannot bear too many children.
  认为一个人孩子生得愈多愈好是错误的。
  I think it right that one cannot learn too much knowledge.
  我认为一个人的知识愈多愈好。
  6.It is impossible to...too...=cannot...too...
  It is impossible to emphasize this point too much.
  要特别强调这一点。
  与cannot...too...相似的句型结构主要有:
  1.cannot help+doing:该结构意为“禁不住做……”“忍不住干……”,指“身不由己地去做某事”。例如:
  We could not help thinking when we saw the Great Wall in China.
  看到中国的长城,我们不禁浮想联翩。
  I couldn't help crying when I heard the bad news.
  当我听到那不幸的信息,我不禁大哭起来。
  类似结构:“cannot help but do sth.”表示“不得不、忍不住”。例如:
  We could not help but walk from dawn to dusk.
  我们不得不从黎明走到黄昏。
  I couldn't help but cry.
  我忍不住哭了起来。
  2.cannot but do sth.:该结构表示“不得不……”。例如:
  I cannot but admire his courage.
  我不得不钦佩他的勇气。
  I couldn't but laugh on reading such a funny joke.
  读到如此滑稽的笑话,我忍不住笑了。
  注意:①在这个句式里,cannot后省略了do anything。例如:
  He cannot but agree.
  他不得不同意。
  ②can but do sth.表示“只得……”。例如:
  The boy made an apology to his teacher, so the teacher could but give up the idea of punishing him.
  那男孩向老师道了歉,老师只得打消惩罚他的念头。
  ③类似这一结构的“cannot choose but do sth.”也表示“不得不……、只得……”。例如:
  It rained hard, so they couldn't choose but stay at home.
  雨下得很大,他们只得待在家里。

中学生语数外:高中版津35~36G381中学外语教与学管娟20072007
作者:中学生语数外:高中版津35~36G381中学外语教与学管娟20072007

网载 2013-09-10 20:49:07

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