高三英语Module6 Unit1 Laughter is good for you 专项复习导学案
3.现在完成时与一般过去时的区别：
1）
2）
4.表示“曾经到过某地（人已回来）”用“have/has been to”,表示“到某地去了（还未回来）”用“have/has gone to”.例如：
——where is li hua? －he has gone to the reading-room.
——she knows a lot about shanghai.－she has been there.
5.短暂动词（即瞬间动词），join,lose,buy,borrow,leave,go,come,arrive,die,
marry,finish,complete,begin,start,break out等，在完成时态中，其肯定式不能和表示一段时间的状语连用。例如不能说：he has finished the work for three hours.要翻译“他已完成工作三小时了。”
可采用1）“ago法”：he finished the work three hours ago.
2）“延续法”：he has been through(with)the work for three hours.
3）“since法”：it is/has been three hours since he finished the work.
高考链接：
①——______my glasses?
——yes,i saw them on your bed a minute ago. (nmet)
a.do you see b.had you seen c.would you see d.have you seen
② you don’t need to describe her.i______her several times. (nmet)
a.had met b.have met c.met d.meet
③ ——do you know our town at all?
——no,this is the first time i______here.
a.was b.have been c.came d.am going
四、the present perfect continuous(现在完成进行时)
1.用来表示从过去某一时刻开始一直持续到现在（或今后还要继续一去）的动作。例如：he has been doing the maths problems since 8:00.
it has been raining for two days.
2.凡是不能用于现在进行时的动词均不能用于现成完成进行时。
