请看下列例句的区别:
• He borrowed the book.
• 他买了那本书(事实).
• He has borrowed the book.
• 他已经借了那本书(不用再买了).
• He borrowed the book last week.
• 他上星期借了那本书.
• He has kept the book for a week.
• 那本书他已经借了一个星期了. 瞬间动词
瞬间动词，也叫终止性动词、结束性动词、非延续性动词、短暂性动词。这类动词所表示的动作在瞬间就可以完成，不能延续下去。【例词：close, leave, buy, join, become, begin, fall，fall ill，get to(know), come, go, see, hear, hear from, cat-ch a cold, kill 】
这类动词不是不能用于完成时态。只是不能用于由how long提问的句子和含有for+一段时间的完成时态中。
1. He has died. ( 对 )
2.Tom has gone to Beijing. ( 对 )
3.How long has he come? ( 错 )
4. He has joined the club for a long time. ( 错 )
5. He has been a member of the club for a long time . ( 对 )
6. His grandfather has died for over 30 years. ( 错 )
7. His grandfather has been dead for over 30 years . ( 对 )
表示短暂动作的 动词转换后才可以用于表示一段时间的(for+时间段，since+时间点)完成时态
leave→be away, borrow→keep, buy→have, begin/start→be on, die→be dead, move to→live in, finish→be over,
join→be in/be a member of, open sth.→keep sth. open, fall
ill→be ill, get up→be up, catch a cold→have a cold。
close→be closed
瞬间动词变延续性动词的4种方式：
a)用延续性动词代替终止性动词
1、用have代替buy
My brother has had(不能用has bought) this bike for almost four years.
2、用keep或have代替borrow
I have kept(不能用have borrowed) the book for quite a few days.
3、用be替代become
How long has your sister been a teacher?
4、用have a cold代替catch a cold
Tom has had a cold since the day before yesterday.
5、用wear代替put on
b)用“be＋形容词”代终止性动词
1、be＋married代marry 2、be＋ill代fall (get) ill
3、be＋dead代die 4、be＋asleep代fall (get) asleep
5、be＋awake代wake/wake up 6、be＋gone代lose,die,sell,leave
7、be＋open代open 8、be closed代close/shut
9、be＋missing(gone,lost)代lose
c)用“be＋副词”代终止性动词
1“be＋on”代start,begin
2“be＋up”代get up
3“be＋back(to)”代return to,come back to,go back to
4“be here (there)”代come(arrive,reach,get) here(arrive,reach,get) there等等
d)用“be＋介词短语”代终止性动词
1.“be in/at +地点”代替go to /come to
2.用be in the army 代替join the army
3.“be in/at +地点”代替move to 或go
请看下列例句的区别:
• He borrowed the book.
• 他买了那本书(事实).
• He has borrowed the book.
• 他已经借了那本书(不用再买了).
• He borrowed the book last week.
• 他上星期借了那本书.
• He has kept the book for a week.
• 那本书他已经借了一个星期了. 瞬间动词
瞬间动词，也叫终止性动词、结束性动词、非延续性动词、短暂性动词。这类动词所表示的动作在瞬间就可以完成，不能延续下去。【例词：close, leave, buy, join, become, begin, fall，fall ill，get to(know), come, go, see, hear, hear from, cat-ch a cold, kill 】
这类动词不是不能用于完成时态。只是不能用于由how long提问的句子和含有for+一段时间的完成时态中。
1. He has died. ( 对 )
2.Tom has gone to Beijing. ( 对 )
3.How long has he come? ( 错 )
4. He has joined the club for a long time. ( 错 )
5. He has been a member of the club for a long time . ( 对 )
6. His grandfather has died for over 30 years. ( 错 )
7. His grandfather has been dead for over 30 years . ( 对 )
表示短暂动作的 动词转换后才可以用于表示一段时间的(for+时间段，since+时间点)完成时态
leave→be away, borrow→keep, buy→have, begin/start→be on, die→be dead, move to→live in, finish→be over,
join→be in/be a member of, open sth.→keep sth. open, fall
ill→be ill, get up→be up, catch a cold→have a cold。
close→be closed
瞬间动词变延续性动词的4种方式：
a)用延续性动词代替终止性动词
1、用have代替buy
My brother has had(不能用has bought) this bike for almost four years.
2、用keep或have代替borrow
I have kept(不能用have borrowed) the book for quite a few days.
3、用be替代become
How long has your sister been a teacher?
4、用have a cold代替catch a cold
Tom has had a cold since the day before yesterday.
5、用wear代替put on
b)用“be＋形容词”代终止性动词
1、be＋married代marry 2、be＋ill代fall (get) ill
3、be＋dead代die 4、be＋asleep代fall (get) asleep
5、be＋awake代wake/wake up 6、be＋gone代lose,die,sell,leave
7、be＋open代open 8、be closed代close/shut
9、be＋missing(gone,lost)代lose
c)用“be＋副词”代终止性动词
1“be＋on”代start,begin
2“be＋up”代get up
3“be＋back(to)”代return to,come back to,go back to
4“be here (there)”代come(arrive,reach,get) here(arrive,reach,get) there等等
d)用“be＋介词短语”代终止性动词
1.“be in/at +地点”代替go to /come to
2.用be in the army 代替join the army
3.“be in/at +地点”代替move to 或go