核心问题
（a）I'll be staying here for the next month.
(b) I'll be staying here during the next month.
请问这两个句子有无区别？
词典解答
在句(a)中, for 表示后跨整个时间段, 即 for the next month 是指下个月的整个月份, 而在句(b)中, during 的含义是有歧义的。during the next month 既可以指下个月的整个月份, 也可以指下个月的某段时间。请比较:
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The sun gives light during the day. (ALD) 太阳在白天给我们光。
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During the war he became a member of the Consultation Committee. (Lindsay) 战争期间他当上了顾问委员会的委员。