现在完成时
一、现在完成时的结构
Байду номын сангаас
have/has + V过分
二、现在完成时用法
I can’t find my pen. I have lost 过影响现 it. Have you finished it yet ? He has worked here for a year. 过持续到 I have been in this school since 1999 . 现在 He has been to China twice. 两“去” He isn’t here. He has gone to the library.
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2.非延续性动词也称终止性动词、瞬间动词, 表示不能延续的动作,这种动作发生后立即 结束。 如:open, die, close, begin, finish, come, go, move, borrow, lend, buy等。 非延续性动词在肯定句中与表示时间点的 状语连用,如:two years ago; at 5 o'clock; eg:He died 5 years ago. 思考He has been died dead for 5 years.正确吗? 如果和时间段连用,需转换成延续性动词。
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get to/ arrive/reach --- be (in), leave --- be away from, get to know --- know,
牛刀小试:
eg:The old man died 4 years ago. -The old man has been dead for 4 years. He joined the Party 2 years ago. -He has been in the Party for 2 years. I bought the book 5 days ago. -I have had the book for 5 days.