remember/forget to do 记着/忘记要去做某事remember/forget doing 记着/忘记做过某事regret to do 很遗憾要去做某事regret doing 后悔做过某事mean to do 打算要做某事mean doing 意味着某事stop to do 停下来去做另一件事stop doing 停止做某事try to do 尽力做某事try doing 尝试着做某事这是高中常用的