区别
1、has been to 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，
如:
She has been to Beidaihe twice.(此时不在北京)
How many times have you been to London?
2、has been in 表示一直呆在某地， 常与时间段搭配，
如:
She has been in Beijing for nearly two weeks..(此时仍在北京)
How long have you been in the factoory?
与has gone to区别：
(1) sombody has gone to +表示地点的名词:意思某人去了某个地方(有可能在还在路上，有可能到达了某个地方，但是还没有回来)
例如:Tom has gone to America
意思，汤姆去了美国 (有可能还在去美国路上，有可能已经抵达美国)
(2)somebody has been to +表示地点的名词:意思某人曾经过去过地方(但是现在已经不在那个地方了)
例如:Tom has been to America
意思，汤姆曾经过去过美国(现在已经不在美国了 )
造句:
1、has been to
He has been to shanghai.
译文：
他曾经去过上海。
一般疑问句Has he been to shanghai?
肯定回答:Yes he has. 否定回答:No,he has not.
否定句:He has not been to shanghai.
2、I have been in SuZhou for six years.
译文：
我在苏州六年了。