Have been in强调“过去曾去过”之意,表示经验;
have been to的意思是“过去到过而现在已返回”,它强调“最近的经历”
have been in一般要和一段的时间进行连用eg:I have been in Shanghai for three years .而have been to 则通常和次数连用eg:I have been to Peking twice.
举例说明
They have been in Chicago.(1)
They have been to Chicago.(2)
(1)句的意思是“他们曾去过芝加哥”,此语强调过去的经历,但没有说明现在是否已回来.言外之意,他们到过芝加哥,他们知道芝加哥在何处,该城市有多大,人口有多少等等.
(2)句的意思是“他们曾到过芝加哥,现在已回来了”.此语强调的是往返的经历.
4.