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If something is instructive, you come away knowing more, or seeing something more clearly. A mistake can be instructive. A trip, a story, a failure — none of these had to be made as a lesson, but they taught you. That is the difference from instructional: instructional is designed as teaching; instructive is useful as teaching, even by accident. It is a calm, slightly formal adjective. People say “most instructive” in a polite or slightly dry way, after a talk or after something went wrong. It praises the learning you got, not the official purpose of the thing.
有啟發的；能讓人學到東西的
組成instruct + -ive (having that quality)
同家族的字
- instructthe verb this adjective is built from
- instructionthe noun: teaching, or directions
- instructionalclose in look: made to teach, rather than useful as a lesson by chance
- instructorthe person who instructs
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
instructiveadj/ɪnˈstɹʌktɪv/
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Conveying knowledge, information or instruction.
- Well, that was an instructive lesson.
- Some commentators have suggested that the activity represented by WallStreetBets and Trumpism are part of the same populist, anti-elite phenomenon, but if Trumpism in general is instructive at all here, it’s as a reminder that self-described anti-elite movements can, in fact, turn out to be much more complicated than that.
instructivenoun/ɪnˈstɹʌktɪv/
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human-scienceslinguisticssciencesA case in the Finnish and Estonian languages. It expresses the means or the instrument used to perform an action.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。