题目内容：

have done和have been
麻烦大家开导我下,糊涂

优质解答

1、 have done 现在完成时,表示讲话时已经完成的动作,而且产生了后果.比如：May I watch TV Mom,I have finished my homework.妈妈,我可以看电视了吗,我已经做完作业了.2、have been + doing 现在完成进行时指从过去...