had been 用法.

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/06/16 06:02:43

had been 用法.
He waved desperately to his companion,who had been water skiing for the last fifteen minutes.
who 是引导非限定性定语从句，那么had been 在这里是什么时态？

had been water skiing是从句的谓语用的是过去完成进行时.表示这一动作从过去开始到过去还在进行中.

had been 用法. had been 的意思和用法? has been 和 had been 的用法和差别英语中had 和 had been 的用法? have has had或 having +been 的区别和用法请问HAS BEEN和 HAVE BEEN HAD BEEN的用法以及分别加DONE后的用法 Had had的用法. what had been done had been done. have been 与had been have been doing 和have done 还有had done三者的区别,用法介词+句子的用法?Considering Jane had only been there before,she did had been doing