such that 和 so that 在句子里都是连词词组.
语义差别：
such that —— 表“结果”,即 that 后面的句子所表达的是前面句子带来的结果,如你的例句.其它例子：His anxiety was such that he could not sleep.
so that —— 表“目的”,即 that 后面的句子所表达的是前面句子“计划”达到的目的.例：
I stopped so that you could catch up.
再看这两个句子,它们所表达的意义是不一样的：
The doctor changed Mary's medication such that she died.（这医生更换了Mary的用药,导致了她的死）
The doctor changed Mary's medication so that she died.（这医生更换了Mary的用药是想要她死）
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