so + adj.such + a(n) + n.

so + adj. + a(n) + n.such + n. (pl.)

so + adj. + n. (pl.) such +n. (pl.)

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。