Mr hang _____ to Dalian .he will come back in a week 为什么不写has been 而写 has gone

问题描述:

Mr hang _____ to Dalian .he will come back in a week 为什么不写has been 而写 has gone

has been 去过,说明人已经回来了.可我们通过后一句中得知他要一个星期后回来,说明他还在大连,所以只能用has gone,即去了.