By the time he ten, he about 3,000 English words.A. had been, had learned B. was, had been C. was, learned D. had been, learned

分类: 作业答案 • 2021-12-20 03:00:07

问题描述：

By the time he ______ ten, he ______ about 3,000 English words.
A. had been, had learned B. was, had been C. was, learned D. had been, learned

答

B
建议参考charlie 254

答

选B。这是一道时态题。到他十岁时，他已学会了3000英语单词。他十岁是过去的事，因此用一般过去时，在那之前的事用过去完成时。

答

【答案】B. was, had been【解析】by the time 1)到…时候为止通常引导一个时间状语从句,表示“到……的时候为止”主句则表示在此时间之前某个事件已完成.值得注意的是,当从句用【过去时】时,主句通常用【过去...

答

C. was, learned

By the time he ______ ten, he ______ about 3,000 English words.A. had been, had learned B. was, had been C. was, learned D. had been, learned