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decide的用法总结简单
it的用法总结简单：
it最常见的是做普通代词，代指前文提到的某种物体或某个事情，比如I bought a table，it代指前面的table。第二个用法是用it或there来代指不确定的东西。第三种用法是it做强调句的形式主语。
扩展资料
1、it一般指无生命的物或动物
I have bought a chair. It is made of pine wood.
我买了一把椅子。它是松木做的。
I am taking the meat back to the shop because it isn’t good.
我要把肉退回店里，因为它不好了。
Learning is a bitter root, but it bears sweet fruit.
学习根苦果甜。
It was a stupid question, of course.
当然，这是个愚蠢的问题。
How much is it, Dad?
多少钱，爸爸？
It is a beautiful place.
这是一个美丽的地方。
It was the earthquake.
那是地震。
但可以指代婴儿，或不清楚对方性别
The baby is crying. It must be hungry.
婴儿在哭。它一定饿了。
I did not disturb the child because it was sleeping.
我没有打扰那孩子，因为他正在睡觉。
Who is it speaking?
谁打来的`电话?
Sure. Is it someone your family knew?
当然。是你家人认识的人吗？
2、it某件事
（it指代的是什么，从上下文来判断）
Take it easy.
不要紧张。
I'd rather not talk about it.
我不想多谈此事。
It is your affair, not mine.
这是你的事，不是我的事。
When she talked to people, she liked to do it face to face.
当她和别人交谈时，她喜欢面对面谈。
3、做主语，指代时间、日期、距离、天气等
it做非人称代词
It is snowing on the mountains. 山上正在下雪。
What time is it? It’s two-thirty.
几点了？现在是两点半。
It's been almost a week and she hasn't been coughing today.
快到一个星期了，她今天没咳嗽。
It was nearly dark and she was a good fifty miles from home.
天快黑了，她离家还有50英里远。
It’s only five-mile ride from here.
离这里只有五英里的路程。
It’s Christmas, and the family are on vacation in Europe.
今天是圣诞节，一家人正在欧洲度假。
4、形式主语
真正主语可能是动词不定式，动名词或主语从句，一般后置。
It is dangerous to play with fire.
玩火是危险的。
In all things, it is better to hope than to despair.
凡事抱希望为佳，不应悲观而失望。
It is a great art to laugh at your own misfortune.
对己之不幸付之一笑，这是一门伟大的艺术。
It is no use crying over spilt milk.
覆水难收。
It's no use arguing with a drunk.
和酒鬼理论是没用的。
It seems that the disease is now under control.
看来这种病现在已得到控制。
It's a pity that you have to go so soon.
很遗憾你这么快就得走了。
Divorce is a fire exit. When a house is burning, it doesn’t matter who set the fire. If there is no fire exit, everyone in the house will be burned!
离婚是个消防出口。房子着火时，谁放的火都无关紧要。如果没有消防出口，房子里的每个人都会被烧死！
5、形式宾语
真正宾语可能是动词不定式，动名词或宾语从句，一般后置。
I find it impossible to get on with Li Tao.
我发现和李涛相处不下去。
I find it interesting that she claims not to know him.
我觉得有趣的是她声称不认识他。
He found it exciting riding the roller coaster.
他觉得坐过山车很刺激。
I thought it best to call first.
我想最好先打个电话。
I thought it best (that) I leave them with a neighbour.
我想最好把它们交给邻居。
I took it for granted that we should build new roads.
我认为我们应该修新路是理所当然的。
6、用在强调句it's …who/that…中
强调主语，宾语或状语
（被强调的是人，用who/that；其他用that）
It was John who broke the window.
是约翰打破了窗户。
It was his parents that he turned to for advice.
他向父母寻求建议。
It was the first money that he had ever had.
这是他有生以来的第一笔钱。
It was when he was in Paris that he became a well-known writer.
他是在巴黎时成为一位著名作家的。
it的用法总结高中课件
有时可用来指人，但主要限于指性别不明的婴儿或指身份不明的人。
用于强调句型：It is (was) …that (who) …。
用作形式主语或形式宾语：
扩展资料
某些及物动词（如 like, love, enjoy, prefer, hate, appreciate等）之后若没有出现宾语，而直接跟 if/when 引导的状语从句，要在从句前使用代词 it。
在某些特殊表达中的`使用。
例句：
ring it into the light so I can see it.
把它拿到亮的地方，好让我看见。
I didn't mean to break it— it was an accident.
我不是故意打碎它的—这是个意外。
If it doesn't fit, you can always take it back.
要是它不合适，你总还可以把它退回去嘛。
find it doing用法归纳与总结
it用法归纳与总结如下：
1、做形式主语。
It形式主语 V… S真正主语。
It is necessary {to repeat the whole thing}真正的主语.
2、做形式宾语。
S V it形式宾语 O真正宾语。
She made it clear (that) we were not welcome.
3、用于强调句。
It主语 is…that/who…
It’s Spain that he went to, not Portugal.
it的词汇功能：
1、具体指代：
前文已经提及的某物/某事，或者语境中明确的某物/某事，用it指代。
He took a quick look at the house and noticed it was very old.
2、模糊指代：
表示一般情况。
How’s it going?
表示「气候、天气、温度、时间、地点、距离」等。
It is raining.
表示某种素质。
Either you've got it or you haven't.
表示性别未知的人。
He promised to support the child after it was born.
it的用法总结经典句型
第三人称单数代词it词性简单，词义和用法却比较复杂。it的用法笼统来说可以分为两类，一是词汇功能，包括具体指代「它」或模糊指代某种笼统的情况；二是语法功能，用于形式主语、形式宾语、强调句等。
（一）用it作人称代词
it最基本的用法是人称代词，主要用来表示刚提到的东西以避免重复
The car accelerated as it overtook me.
那辆汽车一加速就超过了我。
（二）非人称代词it
It有时并不指具体东西，而指天气、时间、环境等，称为非人称代词
It was raining this morning.
今天早晨下雨了。
（三）用于强调的it
It可用来对句子的某一成分加以强调，这类句子的结构是：it+系动词+强调部分+who(m)或that+其他部分。这类句子可称为分裂句，这种结构称为分裂结构。
Mary is giving all her friends books for Christmas this year.
玛丽在圣诞节要向所有朋友赠书。
（四）先行主语it
it可以用作先行词，作为句子形式上的主语，而把真正的主语移到句子后面。这样句子变得更平稳，不致主语太长，显得头重脚轻。这种it称为先行主语。可移到句子后面的主语最常见的时不定式。
It is never too old to learn.
活到老，学到老。
（五）it的其他用法
人称代词it作宾语，代表刚提到的一样东西
You can’t eat your cake and have it.
鱼与熊掌不可兼得。
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