其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so是副词，只能修饰形容词或副 词。so 还可与表示数量的形容词many，few，much， little连用，形成固定搭配。 so + adj. such + a(n) + n. so + adj. + a(n) + n. such + n. (pl.) so + adj. + n. (pl.) such +n. (pl.) http://yingyu.chazidian.com so + adj. + n. [不可数] such +n. [不可数]
so foolish such a fool so nice a flower such a nice flower so many/ few flowers such nice flowers so much/little money. such rapid progress so many people such a lot of people so many 已成固定搭配，a lot of 虽相当于 many，但 a lot of 为名词性的，只能用such搭配。 so…that与such…that之间的转换既为 so与such之间的转换。