have worked 和 have been working有什么区别

have worked 和 have been working有什么区别 have been working与have worked的区别 could have been 和may have been 有什么区别? Difference between "have worked" and "have been working " I have worked here for 2 years.和I have been working here for have been to 和 have been in 和have been on有什么区别 请问一下have been to和have been in和have been at有什么区别? have been 和 have arrived用法上有什么区别 have gone和have been going 有什么区别啊? have been to 和have gone to 有什么区别 请问have collected 和have been collecting 有什么区别 have been和have gone有什么区别?