Question

一个英语问题有时候看到to后面就加动词原形,有时候看到to说to是介词用动词ing形式,究竟什么时候用原型,什么时候用i

Answer 1

大部分用原形,记住要ING的几个固定词组就可以了.如look forward to doing,apply oneself to doing sth,devote oneself to doing sth,be uesd to/be accustomed to/ be adapted to doing .contribute to doing,be used to doing,devote oneself to doing.pay attention to doing.