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

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 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? They have never been opened.为什么不可以是They never have been open 急 been open还是has been opened I,_____,have been to the Great Wall.能填as well 还是too,还是两个都行 have been to是延续性动词吗?如果不是,那么在现在完成时里这句话里有since,能用have been to吗 have been to是延续性动词吗?如果不是,那么在现在完成时里这句话里有since能用have been 请问have been to是不是延续性动词 has been opened和has been open的区别. has been open 和has been opened区别? How long has the shop__.A,been open.B been opened 答案是B为什么 have been to这里的have 这里have been是延续性动词吗?have been to后能跟for和si