初中英语语法的归纳总结:it作非人称代词的用法

2023-12-01 21:28:00来源:网络

  初中英语语法,是初中英语中一个重要的板块。熟练的掌握这些语法知识,对于我们英语能力的整体提高,会有更好的帮助。那么具体的初中英语语法知识都包含了哪些呢?下面为大家整理了“初中英语语法的归纳总结:it作非人称代词的用法”,供大家进行参考学习。

  22-2 it作非人称代词的用法

  用来指时间、距离、价值、天气、气候、温度等自然现象

  it作非人称代词,主要用来指时间、距离、价值、天气、气候及温度等自然现象。如

  It's too late to go there now.现在去那儿已经太迟了。

  It rained all day yesterday.昨天下了一天的雨。

  It can get very hot here.这里会变得很热。

  用于一些表示时间的固定句型

  (1)It's time for sth.该做某事了;是做某事的时间了。如

  It's time for lunch.该吃午饭了。/是吃午饭的时间了。

  (2)It's time to do sth.该做某事了;是做某事的时候了。如

  It's time to go to bed.该睡觉了。/是睡觉的时间了。

  (3)It's time for sb.to do sth.某人该干某事了。如

  It's time for me to go home.我该回家了。

  (4)It's time+that-从句.某人该做某事了。如

  It's time that you should do cleaning.你该去打扫卫生了。

  (5)It's the first (second)time+that-从句。那是某人第几次干某事。如

  It is the first time that I have received your letter.那是我第一次收到你的来信。

  (6)It's+时间段+since-从句。……多长时间了。如

  It's three years since he joined the Party.他入党三年了。

  (7)It will be+时间段+before-从句。过多长的时间才……。如

  It will be hours before he arrives.再过几个小时他才到。

  用作形式主语

  (1)当动词不定式、动名词、从句等复杂成分作句子主语时,为保持句子平衡,通常把真正的主语放在句末,而在句首使用形式主语it。如

  It's very important to remember this.记住这一点很重要。

  It's hard work climbing mountains.爬山是艰苦的工作。

  It's unknown when he will come.他什么时候来还不知道。

  (2)it用作形式主语的重要句型

  ①It+be+adj.for (of)sb.to do sth.某人做某事……

  It is hard for him to make up his mind.他很难下定决心。

  It was foolish of her to say such a thing.她说那样的话,真是太蠢了。

  注意

  介词of与for的区别是of用来指某人的性格、属性、特征等,介词for表示对象,意为“对……来说”。

  ②It takes sb.+时间段+to do sth.做某事需要某人……时间。如

  It takes us years to master a new language.掌握一门新的语言需要我们多年的时间。

  ③It is up to sb.to do sth.该由某人做某事。如

  It's up to you to make the choice.得由你来作选择。

  ④It seems (look,appear,happen)that/as if ...似乎……

  It seems that he is always correct.他好像总是对的。

  It happened that I was out when he called.他打电话时我碰巧不在家。

  ⑤It is said(reported/believed)that ...据说(据报道/人们相信)……。如

  It is said that he has joined the Party.据说他入党了。

  It's reported that Chinese spend more than 40 minutes a day reading

  WeChat.据报道中国人每天花40多分钟看微信。

  It is believed that the book is well worth reading.人们相信那本书很值得一看。

  用作形式宾语

  (1)当动词不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时,通常会在宾语补足语前使用it作为形式宾语,而将真正的宾语移至句末。其基本结构为“动词+it+宾语补足语+不定式(动名词或从句)”。如

  I find it difficult to do the job well.我发现做好这件事不容易。

  I think it best that you should stay here.我认为你最好住这儿。

  We think it no use complaining.我们认为抱怨是没有用的。

  (2)用作形式宾语的几个特殊结构

  ①动词+it+that-从句。如

  I like it that you came.你来了,我很高兴。

  I take it (that)he will come on time.我认为他会准时来的。

  You can put it that it was arranged before.你可以说这是以前安排的。

  注意

  能用于此结构的动词主要有have,take,put,like等。

  ②动词+it+when (if)-从句。如

  I dislike it when you whistle.我不爱听你吹口哨。

  We really appreciated it when she offered to help.她来帮忙了,我们十分感激。

  I'd prefer it if I didn't have to do so much work.要是我不必做那么多工作,那就太好了。

  注意

  能用于此结构的动词主要有enjoy,hate,love,like,dislike,appreciate,prefer等。

  ③动词+介词+it+that-从句。如

  See to it that you're not late again.注意千万不要再迟到。

  Look to it that this doesn't happen again.注意不要再发生这种事。

  You may rely on it that he'll come to meet you.你放心,他会来接你的。

  I can't answer for it that he will come.我不能保证他会来。

  注意

  能用于此结构的动词主要有see to,look to,insist on,stick to,depend on,answer for等。

  ④动词+it+介词短语+that-从句。如

  I owe it to you that I am still alive.多亏有你,我才活下来。

  I took it for granted that he would help us.我认为他会帮助我们的。

  注意

  能用于此结构的动词主要有take it for granted,bring it to sb's attention,owe it to

  sb.等。

  用于强调句中

  强调句的基本结构是It+be+被强调部分+that (who)+其他部分。如

  It was yesterday that he got married.他是昨天结的婚。

  It was a computer that he bought last week.他上个星期买的是一台电脑。

  Who was it that won the World Cup in 2016?谁赢了2016年的世界杯?

  以上就是为大家整理的“初中英语语法的归纳总结:it作非人称代词的用法”,希望可以帮助大家更好地学习初中英语语法,更多内容敬请关注!

本文关键字: 初中英语语法

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