remember to do sth 记得要去做某事(未做)
remember doing sth 记得做过某事(已做)
forget to do sth 忘记要去某事(未做)
forget doing 忘记做过某(已做)
stop to do sth 停下来,去做另一件事
stop doing sth 停下正在做的事
介词 to +doing 作宾语
look for ward to 期待
be accustomed to 习惯于
Lead to 导致
when it comes/came to 当谈及/到