have gone to 与 have been to ,have gone ,have been的区别是什么

have been to 去了一个地方,现在回来了
I have been to America.译为：我去过美国（现在回来了）
have gone to 去了一个地方,但现在还没回来
They have gone to America.译为：他们去美国了（现在还没回来,说话的时候“他们”并不在身边）
have been/have gone+副词 与上面的意思相同