我想你it后面应该还掉了什么内容吧。比方说应该是I think it is easy(或其它形容词) _
Anyway,根据题意来看,此题用法应是考查it作形式主语的用法,后面是跟of还是for主要取决于前面前面的形容词(如我举的例子easy):
1如果形容词是表示客观情况的形容词,如difficult ,easy, important,则用for sb to do sth
It is important for us to express our opinions
2 如果形容词是表示主观感情或态度的形容词,如careful, clever ,impolite,则用of sb to do sth
It is clever of him to leave the company
首先要了解:it's 是it is 的缩写,而its是形容词性物主代词,
所以这两个空就应该分别填:it's 和 its
即:The text is so difficult It's impossible for you to understand its meaning
这篇课文太难了,对于你来说不可能理解它的意思。
下面一一翻译:
It was I that called him yesterday
2 It is in the meeting room that I saw the key
3 It is his brother who your are talking about
4 It is yestoday that I saw the movie
5 It took us two hours to see the movie
6I think it necessary to learn a technical ability
7 It is 20 years since we began to learn English
8 it is not long before you realize you have made a serious mistake
1一般情况用It is(was)……that…,分别可以强调主语、宾语、地点状语和时间状语如:
It was he who( that)read three books in the library yesterday(强调主语)
It was three books that he read in the library yesterday(强调宾语)
It was in the library that he read three books yesterday(强调时间状语)
2当被强调部分指人时,可用that,也可用who;指物时,只用that,如:
3强调状语时,只用that,不用when、where如:
4被强调的部分是主语时,注意句子的谓语动词和被强调的主语保持一致如:
It is he who is late It is they that were late
5一般疑问句的强调句为“Is (was) it that…”;特殊疑问句为:“特殊疑问词 is (was) that…”结构如:
Was it ten years ago that his father died(他的父亲是十年前去世的吗)
When is it that you will set off(你到底什么时候出发)
6“not…until…”句型的强调结构为“It is not until…that…”应注意把否定词not转移到until前面如:
I didn't go home until rain stopped(直到雨停了我才回家)
强调句为:It was not until rain stopped that I went home
强调句去掉It isthat ,还原一下次序,句子依旧完整
祝开心~!
在这类句子里,it不是形式主语哦
举个实际例子吧:
It has been a long time since I saw you last time
这里的it可不是形式主语,它是真正的主语,如果去掉since后面的从句,就可以看出主句的结构就是It has been a long time 。这里的it就是主语。
题主所提及的it作为形式主语的情形是这样的例句:
It is a long time between 1900 to 2000
这里真正的主语是 between 1900 to 2000,原句可写为
Between 1900 to 2000 is a long time。
写出以it为形式主语的句子是为了避免头重脚轻。
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