After driving for 20 miles,Jackson realized that he __in the wrong direction.

分类: 作业答案 • 2021-12-28 16:27:35

问题描述：

After driving for 20 miles,Jackson realized that he __in the wrong direction.
A.was driving B.drove C.had been driving D.had driven
为什么不选D?

答

题意说明 Jackson 是在开了20公里以后才发现方向错误,这个动作已经发生并且一直在持续,所以应选用过去完成进行时的结构,过去完成进行时的基本模型：Had been doing.其他时态,A为过去进行时,并不表示现在仍在持续...