have been to 后面加具体地方,比如 have been to China = 去过中国.
have been 后面加there,have been there = 去过那里.
have been 后面也可以加形容词,或者加动词,不过这些就不是“去过”哪里的意思了,而是“曾是”的意思.加形容词：
I have been sad 我一直伤心
I have been lost 我一直在失落
动词：
I have been runnning 我一直在跑
I have been eating constantly 我一直在不停吃东西