both和all的区别

both是两者都，all是三者及三者以上都。例如，You can take both of them。All the books are useful to us。

相关介绍：

both、all有何区别

all全、都（三者以上），既可修饰可数名词也可修饰不可数名词。

All the books are useful to us.

All knowledge comes from practice.

all与否定词not连用为“部分否定”，表示“不是所有的……都……”

I don't know all of them. 他们当中我并不都认识。

All don't agree with you.=Not all agree with you. 并非所有人都同意你。

both两者都

You can take both of them.两个你都可以拿去。

与否定词连用表示“部分否定”。

I don't know both of them.他俩我并非都认识。

both...and...双方都……

He can both sing and dance.他能歌善舞。

both和all词义辨析

1、both 只能与复数的可数名词连用，与可数名词的`复数形式连用时,both则指两个。

You were both a prey to compulsions.你俩都太冲动了。

2、all可与可数名词的单、复数或不可数名词连用，与可数名词的复数形式连用时,all指三个或三个以上。如：

All children deserve encouragement.所有的孩子都应得到鼓励。