has been to表示曾经去过某地，现在已经回到原地。它只能与表示次数的词语搭配；has been in表示一直呆在某地， 常与时间段搭配。
1、The shooting may have been in retaliation for the arrest of the terrorist suspects.
枪击事件可能是对逮捕嫌疑恐怖分子进行的报复行动。
2、I must have been in a shocking state last night.
昨晚我的情况一定很糟糕。
3、Many of their books have been in print for nearly 40 years.
他们的很多书都印行将近40年了。
1、He may have been to some of those places
那些地方他也许去过一些。
2、Those who have been to Dalian all say it's beautiful.
凡是去过大连的人都说大连很美。