many的用法many多用于陈述句和由how引导的特殊疑问句，并且只能指代复数名词。
any的用法any多用于否定句，一般疑问句，并且不管是单数、复数还是不可数名词都能用它。
Many people feel that the law should be changed.
许多人都觉得这项法律应该修改。
It was many years before the full story was made public.
许多年之后，事情的全貌才公之于众。
Let me know if you have any problems.
你若有困难就告诉我。
