have not been to与have never been to的区别

问题描述:

have not been to与have never been to的区别
比如说举下列例子.
1)They have not been to Chicago.
2)They have never been to Chicago.
意思上有什么不同啊..细微的...
按一楼的说法..意思是后者的语气更重一些?

他们没去过芝加哥
他们从来没去过芝加哥 (更加强调“没去过”)
是的,语气更重,而且确实在口语中,如2楼所说,很少用到第一句的