①mean doing sth 意味着做某事 eg：Missing the train means waiting for an hour. 错过这趟火车,意味着再等一个小时. ②mean to do sth意欲做某事（=want to do sth） ③ ——You are joking!你是开玩笑吧! ——No,I mean it.不,我是认真的. ④What do you mean by……? eg：What do you mean by saying that? ⑤have meaning to sb 对某人来说有重大意义. ⑥by all means “一定”、“无论如何”、“用一切手段”.
