In this case "booked" is functioning as an adjective rather than a passive verb.
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john liaopassive tenseNote that ‘passive’ is a voice, not a tense.
GPYIn this case "booked" is functioning as an adjective rather than a passive verb.Just my two cents...
grammarfreakYesterday's delivered package by UPS is missing. The underlined is adjectival.However, "Yesterday's delivered package by UPS is missing" is not good English.
grammarfreakHow about " The package delivered yesterday by UPS is missing "That’s fine, but it’s not an example of a participle used ‘adjectivally’.