【急!】have been skating与have ever received怎么区别 在线等.

have been 和have ever been区别! How long have you been skating?与How long did you skate?的区别 how long have you been skating?怎么回答 Have you ever been there?怎么回答? Have you ever been I have ever been have you ever been to China和have you ever been China有什么区别? have ever been 还是 have never been have与have been有什么区别 Have gone与Have been的区别 have been 与have do的区别 How long have you been skating?