Question

difficult for sb to do sth 和difficult for sb doing sth 有什么区别？

tell sb to do sth 和tell sb doing sth 有什么区别？

Answer 1

一个是去做困难，一个是做了困难。就想forget to do sth忘记去做某事./forget doing sth忘记做了某事 它们之间都是一样

Answer 2

这是基本的错误，句子里面具体讨论 ，it is Adj for /of sb ，肯定不一样