so +形容词/副词+that+从句“如此……以致……”（从句）
too +形容词/副词+to do sth “太……而不能”（简单句）如
He is so young that he can't go to school.
=He is too young to go to school.
so...that和too..to的区别
so +形容词/副词+that+从句“如此……以致……”（从句）
too +形容词/副词+to do sth “太……而不能”（简单句）如
He is so young that he can't go to school.
=He is too young to go to school.