so..as和as..as的区别?

问题描述:

so..as和as..as的区别?

as...as用在肯定句里,so ... as用在否定句或疑问句里。
Tom 和Jim一样高
Tom is as tall as Jim
Tom 和Jim不一样高
Tom is not as tall as Jim
Tom is not so tall as Jim(有Tom 不及Jim高的意思)

在意思上它们是不一样的,在否定句中既可以用not as ...as...也可以用not so...as,而在肯定句中只能用as...as...
He is as clever as you.(He is not as/so clever as you.)
但下面的句子要特别注意:
1) I'll come back as soon as possible.
2) The clouds are as white as snow.
3) He is so strong as to lift a big stone.(so...as to do:那么......以至......)