2017河南专升本英语完型填空常考句型总结

作者:河南专升本网时间:2017-02-19浏览次数:1483

一、It 作形式主语

  1、It is + 名词/形用词/过去分词 + that 从句 (主从) = that 从句 (主从) is +名词/形用词/过去分词

  It is well known that + 句子(众所周知)

  It is obvious that + 句子 (明显的)

  It is apparent that + 句子 (显然的)

  例句:It is well known that diamonds are the hardest substance.

  例句:It is universally acknowledged that trees are indispensable to us

  全世界都知道树木对我们是不可或缺的.

  例句:It is common knowledge that honesty is the best policy.

  2. It is + 形容词/过去分词/名词 (for sb.)+ to do …

  例句: It is hard (for me)to finish the work in three days.

  It is an honor to meet you.

  3.It was said/reported/ thought/believed + that从句(主从) 据说/报道/认为…

  Sb. was said/reported/ thought to do …

  例句:It was said that he had been killed in the accident.

  此句子可以转化为:He was said to have been killed in the accident.

  4. It took/ will take sb. + time to do … 某人花费时间干…

  例句:It took me 10 days to finish my paper.

  二、It 表示时间的常用句型

  1.It is/has been+一段时间+since...

  "自从...已有多久"

  since后的从句用一般过去时

  It has been two weeks since he left

  他已经离开了两个星期了

  2.It was+一段时间+before...

  "在...之前过了多长时间"

  before 后的从句用过去完成时

  It was three years before he had finished his research

  在他完成他的研究之前已经过去三年了

  3.It will be+一段时间+before...

  "过了多久才..."

  before后的从句用一般现在时

  It will be two days before she arrives at Britain

  两天后她才会到达英国


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