できるかもしれない
解説 Definition
could は、〜できるかもしれない、〜できたという意味を表す助動詞です。可能性や能力をやわらかく言うとき、また can の過去形として使われます。
Could is a modal verb used to express past ability, possibility, a tentative suggestion, or a polite request. It often presents an action as less certain, less direct, or more conditional than can does.
覚え方のコツ Memory Tip
could は can の過去形ですが、過去の能力だけでなく、現在・未来の可能性や控えめな提案にも使います。She could read は「読めた」、We could meet は「会うこともできる」。綴りの l は発音せず、can より断定を弱める助動詞として文脈で区別しましょう。
Link could to can: it is historically and grammatically the past form of can, but its modern uses are broader. In She could read, it describes past ability. In We could meet after school, it offers a possibility or gentle suggestion. It also softens requests, as in Could you help me? The l is silent, so the word is pronounced like “kud.” Remember that could often creates more distance, uncertainty, or politeness than can, and it is followed by the base form of a verb.
例文
I could help you today.
今日はあなたを手伝えるかもしれません。
She could read the sign.
彼女はその標識を読むことができました。
We could meet after school.
私たちは放課後に会えるかもしれません。
could の類義語・関連語
could の語源・成り立ち Etymology
古英語 cūþe（cunnan「知る・できる」の過去形）に由来。印欧祖語 *ǵneh₃-「知る」が源で、ラテン語 cognōscere とも同根。「知っていた」→「できた」→仮定の「できるかもしれない」へ変化。関連語: can, know。
Could developed from Old English cūþe, the past form of cunnan, a verb meaning “know how to” or “be able.” Cunnan belongs to a Germanic word family associated with knowledge and ability and is related to modern can and know. The letter l was added to the spelling in the sixteenth century by analogy with would and should, but it was never pronounced.
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