too...to如此...以至于...引导否定句,引导结果状语从句.主句的主语和从句的主语应是同一人或物. 同义词:so...that...[肯定+否定句都能用]
enough to do sth.[肯定句] 例句+改写肯定句:The boy is so tall that he can touch the Apple on the table.[so...that..]=The boy is tall enough to touch the apple on the table.[enough to do sth.]这个男孩太高了因此他可以摸到桌子上的苹果.否定句:The boy...
