2016届高考英语二轮秒杀高中英语重点系列：重点21 现在完成时和现在完成进行时的联系与区别

　　现在完成时表示动作已经完成，着重强调现在的影响和结果。现在完成进行时表示的动作不一定已经完成，强调动作的延续性和动作发生时的情景。

　　He has been reading the book all the morning.

　　He has read the book.

　　Liu Fang has been living in Canada since then.

　　I have been telling you to be careful for weeks.

　　练习：