文档介绍:关于延续性动词与非延续性动词在现在完成时中的运用
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一、延续性动词可以与表示时间段的状语连用。表示时间段的短语有:
for+一段时间,如:for 2 years,for a long time; sy—be a soldier,
join the League/Party—be a League/Party member
go to school—be a student
eg . He joined the Party 2 years ago.
He has been in the Party for 2 years.
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4、用be+adj./
 close/open—be closed/open ,
come /go back/return --- be back,
come here --- be here, die --- be dead, 
fall asleep --- be asleep, fall ill ---  be ill,  
finish/end/complete → be over,
go there --- be there, go/leave --- be away(from),
go (get) out →be out, get up---be up, 
 marry →be married,  move—be out of
eg. The old man died 4 years ago. 
The old man has been dead for 4 years.
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5、去掉短语中的结束性动词
begin to study—study, come to work=work,
get to know --- know,
eg:We have known each other for 3 years.
6、用“It is/Has been+time +since…”句型表达原句的内容。但主句一般用现在时或完成时,since引导的时间状语或短语从句用一般过去时。
eg:It is/Has been three years since we got to know each other.
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7,用“time +have passed since…”句型表达同样的意思。
has been away his hometown for 5 years.
Five years has passed since he left his hometown.
8,把一时间状语改为过去时间状语,原动词的完成时改为过去一般时。
left his hometown five years ago.
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他参军三年了。
He has joined the army for 3 years.
He has been in the army for 3 years.
He has been a soldier for 3 years.
It is/Has been 3 years since he joined the army.
He joined the army 3 years ago.
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。(1).I bought the book three years ago.
(2) I have had the book for 3 years.
(3) I have had the book since 3 years ago.
How long have you had the book ?
(1)He borrowed the book two months ago.
(2)He has kept the book for 2 months .
(3) He has kept the book since 2 months ago.