2017--2018学年译林版必修三unit 1 the world of our senses Grammar & Writing学案
2017--2018学年译林版必修三unit 1 the world of our senses Grammar & Writing学案第4页

  No matter what you say, I believe you.

  无论你说什么,我都相信你。

  [即时演练4] 句型转换

  ①Anyone who comes here is welcome.

  →Whoever comes here is welcome.

  ②You can do anything you like.

  →You can do whatever you like.

  二、it作形式主语

  当不定式、动名词、从句等用作主语时,为避免头重脚轻,通常在句首使用形式主语it,而把真正的主语放在句子末尾。

  1.代替主语从句

  it代替主语从句的常用句式如下:

  (1)It be+名词(a pity, a shame, an honour, a good idea, a miracle, a fact, common knowledge, a surprise ...)+从句。

  It is a pity that I can't go with you because I have to look after my little brother.

  我不能和你一起去真是太遗憾了,因为我必须照看我的弟弟。

  It's a fact that most deaths from lung cancer are caused by smoking.

  大部分肺癌导致的死亡是由吸烟引起的,这是个事实。

  (2)It be+形容词(clear, possible, likely, natural, certain, fortunate, necessary, strange, uncertain, obvious, important ...)+从句。

  It's clear (that) he has done his best.

  很明显他已经尽力而为了。

  (3)It+be+过去分词 (found, believed, reported, thought, noted, proved, known, decided, suggested, required ...)+从句。

  It is not yet decided who will do that job.

  还没决定谁做那项工作。

  (4)某些动词(短语)常用it作形式主语。

  it常用作动词(短语)seem, appear, happen, turn out, chance等的主语。

  It happened that I was in the countryside at the time.

  那时我恰巧在乡下。

  [名师点津] "It+be+said/believed/reported ...that ..."句型一般可转换成"Sb./Sth.+be said/believed/reported ...+不定式"句型。

  It is said that he has got a doctor's degree.

=He is said to have got a doctor's degree.