Professors have to tell us what books they'll definitely need again next semester, and the deadline for them to let us know isn't for a couple of days.
请教一下曹老师,the deadline 是一个时间点,for a couple of days 是持续一段时间。表语应当呈现主语的性质或者为主语的同一事物,而时间点并不具备持续一段时间的性质。那么如何理解the deadline isn't for a couple of days这种表达?