【俚语】

Has /have gone to

Someone has gone to a place but has not yet returned.
指某人去了某地，但是还没有回来

【例句】

He's gone to the bank. He should be back soon.
他去银行了。应该快回来了。
She's gone to Moscow, she will be back next week.
她去莫斯科了。下周会回来。
Where has Eric gone? He was here a minute ago!
Eric去哪了？一分钟前他还在这呢。

Has / Have Been to
someone has visited a place at some time in their life.
指某人去过某地，已经回来，强调这种经历。

【例句】

He's been to London many times.
他去过伦敦很多次了。
I've been to France twice.
我去过法国两次。
Ask Tom for some money. He's been to the bank today.
问Tom给你借些钱吧。他今天去过银行了。