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Usages of oiwai
明日 は 弟 の 誕生日 なので、 お祝い に ケーキ を 作ります。asita ha otouto no tanzyoubi nanode, oiwai ni keeki wo tukurimasu.
Tomorrow is my younger brother’s birthday, so I’ll bake a cake to celebrate.
お祝い の ため に 花 を 買いました。oiwai no tame ni hana wo kaimasita.
I bought flowers for the celebration.
Test yourself: What does oiwai mean?
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“How do verb conjugations work in Japanese?”
Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".
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