Active American English辅导(十一)——现在完成时

Active American English下册第115课开始出现动词现在完成时。现在完成时的形式是助动词have+动词-ed分词。如: ①He has learned English for five months.(下p.183) ②How long have you known each other?(下,p.190) ③My father has never done anything exciting in his life.(下,p.210) 关于现在完成时的功能,请参阅AAE下,pp.183-186。本文着重比较现在完成时与一般过去时的区别。