have been doing sth和现在完成时有区别吗?我上课记得老师说现在完成时后面加什么就等于have been doing sth这个延续的句型.

have been doing sth have been doing sth是什么时态? 英语中have been doing sth和have done 的区别?同上 have been doing sth和现在完成时有区别吗?我上课记得老师说现在完成时后面加什么就等于have been doing sth这个延续的句型. have doing sth 和 have to do sth的区别 Have/has been 后一定要加doing sth.吗? have(has) been doing sth 造句写翻译 英语比较厉害的 关于 have been 的用法的~have been do sth.have been doing sth.有什么区别?比如：I skated for 4 hours.和 I have been skated for 4 hours.有什么区别? have been doing ,have done和have doing区别 have problems with to do sth 和doing sth 区别 I have been doing sth.和I have done sth.有何区别?麻烦各位帮我解决一下英语问题,谢谢! 关于现在完成进行时和现在进行时的互换sb have been doing sth for ten years 能换成sb is doing sth these ten years还是sb is doing sth for ten years 应该是前一句吧? have fun doing sth have fun doing sth. have trouble doing sth have trouble doing sth have sth doing用法? have been do和have been doing的不同