He was so interested in reading the book that three hours ha
答案:1 悬赏:50 手机版
解决时间 2021-07-31 15:49
- 提问者网友：欺烟
- 2021-07-31 08:13
He was so interested in reading the book that three hours had passed ___he realized it a.until b.before
最佳答案
- 五星知识达人网友：鱼芗
- 2021-07-31 08:57
答案：b
解析：主句谓语动词强调动作的迟缓性,只用before,这时常伴有时间段状语或时间段暗示.
eg.
It was quite a long time before he found the elephant.过了很长时间,他才找到大象.
We had walked a long way before we found some water.走了很长的路我们才找到水.
We had sailed for two days before we saw the land.航行了两天我们才发现陆地.
It was midnight before my brother came home.我哥哥直到半夜才回来.
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