现在完成进行时表示动作从过去一直进行到现在She has been swimming for two hours（强调动作）现在完成表示过去发生的动作持续到现在，并可能还要延续It has been five years since he joined the army .他参军五年了。They have learned English for eight year
2. 表示某动作从过去开始发生，持续到现在，并且还有可能持续下去。常用的时间状语有today,these days, so far, up to now, since, ever since, since then. for years/ages, 而且完成时态并不是表示动作尚未结束，用现在完成时态举例，i have worked 和i have been worked. 是完全两种意思。前者是动作必定完成了，没有任何继续的可
表示动作从某一时间开始，一直持续到现在，或者刚刚终止，或者可能仍然要继续下去。在英语时态中，“时“指动作发生动作发生在过去，对现在有影响→l have read this interesting novel. 动作发生在过去，持续到现在，并且有可能持续下去。→She has studied English for six yea
1.动作发生在过去，持续到现在，并延续下去♟I have been studying English for about ten years. ♟the Lius have been living in this town for 20years. 2.动作发生在过去，到现在表示开始于过去并持续到现有（也许还会持续下去）的动作。它常和“for+一段时间”或“since+某个时间点”连用。比如：He has been there for half a year. 他已经去那里半年了。（
现在完成时：过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态，对现在造成影响或后果(老师给出的定义),老师说要动作持续到现在，可是下面的一句话I have rea2. 表示过去经常或反复发生的动作，特别是used to do表达的句型，本身表示的就是过去常常。如：When I was a kid, I often played football in the street. She used to visit her mo
