. .
IT 句型构造:
1. It is + 被强调局部 + that .. 该句型是强调句型。将被强调的局部放
在前面,其它局部置于 that 之后。被强调局部可以是主语,宾语,表语
或状语。强调的主语如果是人,that 可以由 who 换用。如果把这种句
型构造划掉后,应该是一个完整无缺的句子。
It was they that (who ) cleaned the classroom yesterday. It was in the street that
I met her.
It was about 600 years ago that the first clock with a face and an hour hand was
made.
2. It is not until + 被强调局部 + that ... 该句型也是强调句型。主要用于
强凋时间状语,译成汉语 “直到……才……〞,可以说是 not ... until ...
的强调形式。
It was not until her mother came back that she went to bed.= Not until her
mother came back did she go to bed.= She didn’t go to bed until her mother
came back.
3. It is clear ( obvious, true, possible, certain) that 该句型中 it 是形式主语,
真正的主语是 that 引导的主语从句,常译为 “ 清楚〔显然,真的,
可能的,肯定……〕〞是主语从句最常见的一种构造。
It is very clear that he's round and tall like a tree. = That he's round and tall like
a tree is very clear. It is certain that he will e.
4. It is important ( necessary, right, strange, natural...) that ... 该句型和上一
个同属一个句型。由于主句中的形容词不同,that 后的从句中要用虚拟
. v .