SO 与SUCH 的用法:
1、so + 形容词/副词 + that + 从句,如：
This story is so interesting that I want to read it again. （这个故事如此有趣以至我想再读一次.）
He spoke so quickly that I couldn't follow him.
（他说得如此快以至我不能跟上他.）
2、so+形容词/副词+(a/an)+(单数)复数可数名词／不可数名词+that+从句,如果句中的名词是单数可数名词,其前就要用不定冠词a或an,如果是复数可数名词或者不可数名词,前面就不用冠词,如：
She is so lovely a girl that everyone loves he（这个故事如此有趣以至我想再读一次.）r.
（她是如此可爱的一个女孩,以至每个人都喜欢她.）
Those are so beautiful flowers that the girl wants to pick them.（那些花是如此漂亮以至那个女孩想要摘下它们.）
3、such+a/an+形容词+单数可数名词+that+从句,如：
She is such a lovely girl that everyone loves her.（她是如此可爱的一个女孩,以至每个人都喜欢她.）
It is such an interesting story that I want to read it again. （这是一个如此有趣的故事以至我想再读一次.）
4、such+复数可数名词/不可数名词+that+从句,如：
He showed such concern that people took him to be a relative.（他表现得如此关心以致于人们都把他当作亲戚了.）
such 后面需要加名词词组,nice people 作为一个词组用,所以要用such 不用so .
adj+N 前面用such adv+N 前面用so
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.)
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