In Japanese, the verb 開ける (meaning "to to open (something)", JLPT N5) conjugates in the Past Negative Polite form as 開けませんでした (akemasendeshita). Verb group: Group 2.
Context Example
ドアを開けませんでした。
Doa o akemasendeshita.
I did not open the door.
What is the Past Negative Polite conjugation of 開ける (akeru)?
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