have been to和have gone to 作为选择题选项时,考点是什么

have been to ...表示“到过某地”（人已经回来）
have gone to ...表示“去了某地”（人不在现场）
请比较：
1. I have been to Beijing twice. 我到过北京两次.（我已经回来了）
2. -Where's Jim? -He has gone to London with his parents. (Jim不在现场）