1
be + expired
表示某物已过期失效。
The milk is expired.
牛奶过期了。
失效的；过期的
先理解核心含义，再看它在真实句子里的用法。
失效的；过期的
having come to an end or become void after passage of a period of time
The milk is expired.
牛奶过期了。
失效的
that is no longer valid
呼出的
that has been breathed out
死亡的
dead
You cannot use this expired coupon at the store.
你不能在商店使用这张过期的优惠券。
The milk smells sour because it has expired.
牛奶闻起来酸了，因为它已经过期。
She renewed her expired passport before the trip.
她在旅行前更换了过期的护照。
表示某物已过期失效。
The milk is expired.
牛奶过期了。
强调状态变化。
The coupon became expired last week.
优惠券上周过期了。
强调持续状态。
The license remains expired.
执照仍然过期。
Not this
He is an expired doctor.
Use this
His license is expired.
expired 用于描述事物（如证件、食品）的状态，不用于描述人。应改为 His license is expired，表示证件过期。
Not this
The expired date is tomorrow.
Use this
The expiration date is tomorrow.
expired 是形容词，意为过期的；expiration 是名词，意为到期、截止。修饰 date 应使用名词 expiration，构成固定搭配 expiration date（截止日期）。
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常用于描述食品、文件等失效或过期
Dictionary facts from ECDICT, WIKTIONARY.