延续性动词表示能够延续的动作,如：learn,work,stand,lie,know,walk,keep,have,wait,watch,sing,read,sleep,live,stay等
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
但有时不同的理解,一个动词也会同时具有两种性质
延续性动词与非延续性动词之间的转换：
leave --- be away,borrow --- keep,buy --- have,begin/start --- be on,
die --- be dead,finish --- be over,join --- be in+组织机构,或be a member
of+组织机构,open sth --- keep sth open,fall ill --- be ill,get up---be
up,catch a cold --- have a cold,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,等.