英语翻译请问为什么不是 has been opened?

英语翻译请问为什么不是 has been opened? 急 been open还是has been opened How long has the shop__.A,been open.B been opened 答案是B为什么 has been opened和has been open的区别. has been open 和has been opened区别? 为什么是has been dead不是has dead He has been to Canada. So have I. 这里为什么不是 So has been I 呢 how long has this shop been established/opened? 单句改错：The door has been opened itself Mr.Smith has been here since the factory opened为 The shop has been opened (since 2 months ago.) 宏基 VX275开机提示Warning!Your chassis has been opened,