Japatan
Formação
- V普通形 + わけだ
- いA普通形 + わけだ
- なA + な + わけだ
- N + の / である + わけだ
- N + という + わけだ
Explicação
There are two uses. (1) Understanding: when you learn the reason and think "So that's why ~ / No wonder ~." (2) Conclusion: stating the natural result of facts or numbers, "so that means ~," often with つまり or じゃあ. In both, the speaker connects a reason with its result.
Exemplos
窓が開いていた。部屋が 寒いわけだ。
The window was open. No wonder the room is cold.
リンさんは十年も日本に住んでいたそうだ。日本語が 上手なわけだ。
I hear Lin lived in Japan for ten years. No wonder her Japanese is so good.
一日に二時間勉強すれば、一週間で十四時間勉強する わけだ。
If you study two hours a day, that means you study fourteen hours a week.
A「来月から大阪の会社で働くことになりました。」
B「じゃあ、引っ越す わけですね。」A: "I'll be working at a company in Osaka from next month." B: "So that means you'll be moving."
Observações
Use (2) is similar to ということだ, but わけだ stresses that the result follows naturally from the reason. The negatives わけではない and わけがない have different meanings; see the next items.
Gramática relacionada
Miniquiz
1田中さんは毎朝一時間走っているらしい。いつも元気な（ ）。
Resposta e explicação
Resposta: 3 わけだ
"I hear Mr. Tanaka runs for an hour every morning. No wonder he's always so energetic." The speaker understands the reason, so わけだ fits. ことがある contradicts いつも, ことはない contradicts the meaning, and というのは cannot end a sentence.
2この店はいつも安くておいしい。店の前に人がたくさん（ ）わけだ。
Resposta e explicação
Resposta: 2 並んでいる
"This shop is always cheap and good. No wonder so many people are lined up in front of it." わけだ follows the plain form: 並んでいる. The other forms cannot come before わけ.
3A「会議は毎週月曜日と木曜日にあります。」
B「じゃあ、週に二回（ ）わけですね。」
Resposta e explicação
Resposta: 4 ある
A: "We have meetings every Monday and Thursday." B: "So that means there are two a week." B draws a conclusion. わけ follows the plain form, so ある is correct.
