so that=in order that=为了(表示目的)
Ex:He goes to France so that he can learn French.
他去到法国是为了学习法语
so...that 如此...以至于
句型:so+adj./adv.+that
Ex: The box is so heavy that no one can lift it.
那个箱子是如此的重以致于没有人搬得起它
两个句型差别主要是意思不同~
参考资料:自己
希望以上回答对你有帮助~ 如有疑问欢迎追问~ 

so that什么意思啊？用法是啥？

so that 表示。。。以至于。。。
比如
The film is so sentimental that several viewers shed tears.
The boy is so clever that he graduated top of his class at the age of 17.
The smell is so bad that the family decided to leave the neighborhood.
that可以省略

SOthat详细用法

so… that… ：1、意思：如此……以至于……
2、so后面接形容词或副词，that后加结果状语从句。3、例句：I am so hungry that I can't walk .(复合句)：我太饿了以至于不能走路了4、拓展：当that后加否定句式时，含有此词组的复合句可改为含too …to的简单句，可把之前例句改为：i am too hungry to walk .
so that ：以便