延续性动词与非延续性动词
试比较，判断下列句子的正误。

翻译：我离开这所学校已八年啦。

【误】I have left this school for eight years.
【正】I have been away from this school for eight years.
解析：当现在完成时与表示一段时间的时间状语连用时，谓语动词必须使用延续性动词。

如果谓语动词是非延续性动词则需要转化为对应的延续性动词。

延续性动词表示能够延续的动作，也可
以表示经验与经历，如：
learn; sleep; keep; live等
可以与for 和
since 引导的
时间状语连用
He has lived here for 6
years.
非延续性动词也叫短暂性动词，表示不能
延续的动作，这种动作发生
后立即结束，如：open;
begin; finish; come; go;
borrow等
不能与for 和
since 引导的
时间状语连用
She has already finished
her work.
1. 转化为相应的延续性动词
borrow → keep buy → have put on → wear
2. 转化为be+形容词/副词/介词/名词
begin/start → be on go out → be out die → be dead
open → be open get to/ arrive in/reach → be
in+地点come/ go → be + 相应的介词短语
finish → be over fall ill → be ill get up → be up
fall asleep → be
asleep
join → be in+活动/组织go to school → be in school become → be make friends → be friends close → be closed
go to bed → be in bed leave → be away(from)。