Everyone needs to have at least ____ a night

Everyone needs to have at least ____ a night
A.eight hours' sleep
B.eight hours' asleep
请问为什么不能选B项呢.它们之间的区别是什么?这道题是不是考查名词所有格复数形式?非常感谢!

￡冷落￡ 1年前已收到1个回答举报

win3m 春芽

共回答了18个问题采纳率：88.9% 举报

每个人一晚至少需要8小时睡眠.
这里“睡眠”应该用名词,sleep有名词和动词的含义,asleep是形容词和副词的含义,两者的词性上有不通,只是都跟睡觉有关罢了.所以只能选A.
对,这道题考察的是复数名词的所有格形式如何变化.

1年前

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