大事
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Base na-adjective form. Used to describe something important or valuable, often followed by 『な』 (na) when modifying a noun.
Theme
In a school setting, User is talking with their teacher, Yamada-sensei, about priorities for an upcoming project.
大事
だいじ
important / valuable
Core Language Building BlocksCore Adjectives
Memory Hook
Imagine a 'dice' (sounds like 'dai-ji') that you must roll carefully because it's important for a game. 'Dice' → 大事 (daiji, 'important').
Cultural Note
In Japanese culture, 『大事』 (daiji, 'important') is often used to emphasize care and respect, such as in phrases like 『大事にしてください』 (daiji ni shite kudasai, 'please take good care of it').
Forms
Base: 大事Base na-adjective form. Used to describe something important or valuable, often followed by 『な』 (na) when modifying a noun.
Negative: 大事じゃないAdd 『じゃない』 (janai, 'is not') after the base form → 『大事じゃない』 (daiji janai).
Past: 大事だったAdd 『だった』 (datta, past tense) after the base form → 『大事だった』 (daiji datta).
Adverbial: 大事にAdd 『に』 (ni) after the base form → 『大事に』 (daiji ni). Used to modify verbs, e.g., 『大事にする』 (daiji ni suru, 'to treat carefully').
Comparative: より大事Comparative formed with modifier 『より』 (yori, 'more than') + base adjective.
Superlative: 一番大事Superlative formed with 『一番』 (ichiban, 'number one / Most') + base adjective.