His spoken English ___ in the past few years.

显示全部楼层 · 2010-6-9 16:01:17

A was improved B has improved C has been improved D improved 选什么，为什么？improve什么情况下用被动，什么情况主动表被动？谢

千问 · 2010-6-9 16:01:17

选C。口语肯定是被说口语的人提高，所以是被动。过去的几年是个时间段，所以用过去完成时。主动被动之分，举个例子吧：The problem has been improved. 问题被改善了，属被动。I have improved this problem. 我改善了这个问题，人为的属主动。

千问 · 2010-6-9 16:01:17

C首先是被动，所以be improved然后在过去的几年中，表示现在完成时用 has 结合起来就选择C

千问 · 2010-6-9 16:01:17

yes,C is right

千问 · 2010-6-9 16:01:17

哎。这么快被人抢答了