解釋
動詞按其動作發生的方式、動作發生過程的長短，可分為延續性動詞和終止性動詞。
延續性動詞
表示能夠延續的動作。如：study, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。延續性動詞可以與表示時間段的狀語連用。
表示時間段的短語有：for+ 時間，for 2 years；since從句，since he came here；since+時間點名詞，since last year，since 5 days ago；how long；for a long time等。
例：
He has lived here for 6 years.
You can keep the book for 5 days.
I stayed there for 2 weeks last year.
How long did you stay there last year?
終止性動詞
也稱非延續性動詞、瞬間動詞或點動詞，表示不能延續的動作,這種動作發生後立即結束。 如:open, die, close, begin, finish, come, go, move, borrow, lend, buy,arrive等。
非延續性動詞在肯定句中與表示時間點的狀語連用，如：two years ago; at 5 o'clock。
例:He died 5 years ago.
否定的終止性動詞可以與表示時間段的時間狀語連用。例:I haven't left here for 3 years. I haven't heard from him for 3 weeks.
兩者的轉換
leave——be away
borrow——keep
buy——have
begin/start——be on
die——be dead
finish——be over
join——be on+組織機構，be a member of+組織機構，
open sth——keep sth open，
fall ill——be ill
get up---be up
come here——be here
go there——be there
become——be
come back——be back
fall asleep——be asleep
get to/ arrive/reach——be (in)
leave——be away from
get to know——know
go (get) out——be out
put on——wear
catch a cold——have a cold
get married——be married等
例:The old man died 4 years ago
The old man has been dead for 4 years.
It is 4 years since the old man died.
Four years has passed since the old man died.
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.
動詞相關分類
延續性動詞表示能夠延續的動作，這種動作可以延續下去或產生持久影響。如：study, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay，smoke等。
延續性動詞表示的動作不但可以延續，而且可以產生持久的影響,又叫非點動詞。常見的這類動詞有：be，have，keep，know，study，lie，live，read，sing，sleep，stand，stay，wait，walk，watch等。延續性動詞的用法很廣，但常見於現在完成時中的句子中，且常與for，how，long，since等引導的表示一段時間的狀語或狀語從句連用。
終止性動詞也稱非延續性動詞、瞬間動詞或短暫性動詞，表示不能延續的動作，這種動作發生後立即結束。如open, close, finish, begin, come, go, arrive, reach, get to, leave, move, borrow,buy,die等。
它可用於現在完成時態,但由於動作是瞬時間完成的所以不能與for或since引出的時間狀語連用，又叫點動詞.英語中常見的非延續性動詞在完成時態中可改為相應的表示延續性的動詞或短語,這時可與表示一段時間的的狀語連用.
