so that和such that(都是连起来的）引导结果状语从句时有什么区别?比如：Mary didn't keep

so that。so that是从属连接词,却具有对等连接词,接续前文的意味(so …,所以)；so … that …中that 是从属连接词,so 却是副词；such that也是从属连接词,意为"这麼一来就。。。(in such a way that)"；such … that…中that是从属连接词,such 却是形容词,其中so that既可省略so亦可省略 that,其语意和such that其实不尽相同；as … that …中that 是从属连接词,as 也是从属连接词,取代so的用法,如同取代 though / althouth一般。She works very hard so that she is sure to be successful。她很努力所以她一定会成功She works very hard such that she is sure to be successful。她很努力这麼一来她势必会成功