mean to和mean to do分别在什么情况下才用”You should have thanked her before you left""I meant to ,but when i was leaving i couldn't find her anywhere:这里为什么不加do？

mean to do 和mean doing 的区别和用法? mean to do和mean doing的意思和区别? mean sb to do mean to do do you mean to mean to do和mean doing的区别 mean to do 和 mean doing 的区别 mean to do sth.和mean doing sth.的区别 mean to do 和mean doing 区别RT mean to do 和mean doing都是什么意思 mean to do sth/ mean doing sth mean to do sth 的意思?mean doing sth. 和mean 从句的意思? MEAN TO DO 和MEAN DOING 的区别还有TRY TO DO和TRY DOING do you mean everyehing to mean to mean to mean to do/decide to do 区别 mean to do 与mean doing 的区别