Usages of tukeppanasi ni suru
昨夜 は 電気 を つけっぱなし に して 寝て しまいました。sakuya ha denki wo tukeppanasi ni site nete simaimasita.
Last night, I ended up going to sleep with the light left on.
家 を 出る とき は、 電気 を つけっぱなし に しないで ください。ie wo deru toki ha, denki wo tukeppanasi ni sinaide kudasai.
When you leave the house, please don’t leave the lights on.
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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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