remember后接动词有两种形式:remember to do sth意思是记得要做某事（还没有做）remember doing sth意思是记得做过某事（已经做过了） having seen是过去完成时 句意是记得我们已经看过这部电影了.I am glad (that) you are having such a great day.you are…是省略了that的宾语从句 you are having such a great day是一般现在进行时 are having 是谓语 短语have a great day 句意我高兴你过得很愉快