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Breakdown of tomodati no tanzyoubi wo oiwaisimasita.
のno
possessive case particle
をwo
direct object particle
(お)誕生日(o)tanzyoubi
birthday
友達tomodati
friend
alternative spelling
(お)祝いわいする(o)iwaisuru
to celebrate
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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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