题目内容：

The Browns have arrived,but I didn't know they____
The Browns have arrived,but I didn't know they____until yesterday.
A had come B were coming C came D will come
帮忙分析下.
The poet and writer_____not agree to public his book.\
A do B does
这道为什么选B?
The plane_______by the time you get to the airport in your car.
A had landed B will have landed
问：by de time 在这道题里面与该选项有关系哇?

优质解答

The Browns have arrived,but I didn't know they____until yesterday.
A had come B were coming C came D will come
帮忙分析下.
答：B
译：布朗夫妇（一家人）已经到了.不过我直到昨天才知道他们要来.
析：第一句话说明了一个事实,布朗一家人已经到了.其实这句话也是一个干扰项,目的是让你填A.而后一句中的yesterday是引诱同学选C的.选D的同学会很少!
其实but 后面的这个并列分句=I didn't know sth.untill yesterday.我直到昨天才知道一件事.
什么事情呢?就是他们要来的这件事情.我们知道,表示“来”、“去”的位移动词,可以用进行时态表示将来,如：They are coming.他们要来了.而这里的they were coming.就相当于they would come.是指过去的将来.D项如改为would come,就有两个答案了.
23题也为B,没有什么难度,不答了.