情态动词have done (have been doing )一、教学目标情态动词have done (have been doing ) 的用法二、 生成问题情态动词+have done (have been doing ) 的用法有哪些？1、 should(ought to)have done (have been doing )表示“本来应该做而实际上没做”，其否定式表示“本来不该做却做了”，常含有责备的语气。You should have been here five minutes ago.五分钟之前你就应该到这里了。How I regretted the days when I had played and should have studied.我多么懊悔我本应该好好学习的日子都玩掉了。We shouldnt have been resting so long.我们真不该休息这么长时间。2、 couldhave done表示“本来有能力做而实际上没有做”。We could have walked to the st
