有读者问： 有这样一道填空题：
(1)It was_________bad weather that they had to stay at home.
为什么用such而不用so呢？
首先应记住，相当于形容词的such后接名词或“形容词+名词”，如：
(2)We all enjoyed such food （或such stories）.
(3)We all enjoyed such good food （或such thrilling stories）.
上面两句中的such皆不可代之以副词so。so作为副词，其后不可接名词或“形容词+名词”，但可后接“many, few, much+名词”，如：
(4)There were so many mistakes in that essay.
(5)Don't make so much noise.
另外，such可后接“a+（形容词）+名词”，so则不可，如：
(6)She had such a fright that she fainted.
(7)The camel had such a long neck.
但so可后接“形容词+a+名词”，上述句（7）中的such a long neck即可改作so long a neck。试比较：
(8)He is such a nice man.
(9)He is so nice a man.（比较正式）
