all 的用法

1）all 作定语
a) all 作定语可表示“一切的，所有的，全部的”, 可修饰可数名词或不可数名词。
All people enjoyed themselves that night. 那晚所有人都玩得很尽兴。
All hope has gone. 一切希望都破灭了。
I want to know all the details. 全部情况我都想知道。

b) all 修饰可数复数名词时，名词前可有the, this/that/these/those, my, his, her等，也可有基数词。

All the people you invited are coming. 你所邀请的人全都来。
It is not necessary to do all these exercises.　没必要做所有这些练习。
All my plants have died. 我的花草全都死了。
All five men are hard workers. 他们五个人都很努力。

c) all 可与表示一段时间的单数名词连用，表示 “整个”。
It has been raining all day. 雨下了一整天。
She was abroad all last summer. 她去年整个夏天都在国外。
He has lived all his life in London. 他一生都住在伦敦。

2) all 作代词
a) all 作代词时，可指代可数名词和不可数名词，在句中作主语或宾语。
All of my toys were broken. 我所有的玩具都坏了。
I invited all of my relatives to my wedding party. 我邀请了全部亲戚来参加我的婚礼。
Take all of the wine! 把这些酒全喝光！
All of this is yours. 这些全都是你的。

b) all 也可以作同位语。all 作为主语的同位语时应位于实义动词之前，系动词、助动词或情态动词之后。
I have read them all. 我全都看了。
We all know that we should be punctual. 我们都知道我们必须准时。
You should all hand in your work by tomorrow. 明天你们必须都把作业交上来。
They were all killed in that accident. 他们都在那场意外中丧生了。