has been have been的区别

has been have been的区别 have been 和 has been的区别 have been / has been / had been 的区别 had been 和 has/have been的区别是什么? had/have/has gone/been 的区别 has been和have been区别 has been doing have been done区别 现在完成时中,have/has 和 have/has been的区别 have,has been to,has gone to的区别 has been dead 与have dead 的区别! have has had或 having +been 的区别和用法 请问have been 和has been有什么区别