in order that和so that的意思差别、后接词差别、使用遍及性差别。in order that的意思是为了、以便、目的在于；so that的意思是因此、以便。in order that的从句中可使用can、could、may、might、must等情态动词；so that后凡是接句子。
in order that只能引导目的状语从句。so that可引导目的状语从句及成果状语从句。
It's best to be as short，clear and factual as possible，in order that there may be no misunderstanding.
She said she wanted tea ready at six so that she could be out by eight.
He is so selfish that his teachers and classmates dislike him intensely.