53. We _D_ our breakfast when an old man came to the door.A just have had B have just had C just had D had just had为什么不选B?
问题描述:
53. We _D_ our breakfast when an old man came to the door.
A just have had B have just had C just had D had just had
为什么不选B?
答
因为句子后面用的谓语动词是“came”句子要前后一致,所以前面也要用过去式 只有D选项是过去完成时。
答
D对
因为主句的动作发生在从句之前,从句的时态是一般过去时,故从句要用过去完成时‘表示过去的过去已经发生或完成了的动作.