Reasoning and explanation
～わけだ
so that's why; it follows that; no wonder
AI-written, reviewed by AI (ChatGPT)
How to form it
- Verb/adjective (plain form) + わけだ
- な-adjective + なわけだ
- Noun + なわけだ
Register: Neutral; common in speech
Explanation
Shows a logical conclusion from facts, or the 'aha, so that explains it' feeling when something becomes clear.
Often combined with 道理で or なるほど when the speaker realises the reason. It states the natural result of a situation.
Examples
毎日練習しているのだから、上手なわけだ。
まいにちれんしゅうしているのだから、じょうずなわけだ。
He practises every day, so no wonder he is good.
道理で眠いわけだ。昨日三時間しか寝ていない。
どうりでねむいわけだ。きのうさんじかんしかねていない。
No wonder I'm sleepy. I only slept three hours last night.
彼は十年日本にいたから、日本語が上手なわけだ。
かれはじゅうねんにほんにいたから、にほんごがじょうずなわけだ。
He lived in Japan for ten years, so that is why his Japanese is good.
Compare with
Common mistakes
- Using it for something that is not a conclusion from earlier information.