open变延续性动词是have been open还是have been opened?总觉得两个都行如果两个都行,那有什么区别?可不可以互换?

open变延续性动词是have been open还是have been opened?总觉得两个都行如果两个都行,那有什么区别?可不可以互换? open的延续性动词 为什么open变为延续性动词时要变成have been open 而不变成have been opened?而close要变成have been closed,open和close为什么不一样? begin是延续性动词吗还是非延续性动词?忘了问！怎么变 延续性动词？ since you have come对吗,come不是瞬间动词吗不说瞬间动词要变延续性动词么,应该是since you have been here? open变延续性动词为什么变成be open,而不是be opened Start 变延续性动词 see变延续性动词 leave 变延续性动词 非延续性动词如何变延续性动词 have been in可代替哪个非延续性动词 How long have you been living in China?为什么要用been,living是延续性动词啊 How long have you been married 可否改为How long did you marrymarry是延续性动词吗?还是瞬间动词 live是瞬间动词吗?还是延续性动词?-Have you been to Xiamen?-Yes.I_____there 3 years ago.A.live B.have been C.lived live是延续性动词吗?是的话后面可以接时间点吗 see是延续性动词吗,如果不是,怎么变延续性动词? been是谁的延续性动词? be是延续性动词吗?它和been什么关系? 大家帮我用英语造一些延续性动词的句子,这些短暂性动词变为延续性动词buy--have borrow--keep open--be open fall asleep--be asleepmake friends--be friends get up--be up marry--be marrieddie--be dead ,这些短暂性动词变