Explanation
Expresses a logical conclusion or reason based on information; 'that's why', 'no wonder', 'it means'.
Formation
Verb-casual + わけだ, い-Adjective + わけだ, な-Adjective + なわけだ, Noun + のわけだ
Detailed explanation
The ～わけだ grammar point is used to express a conclusion, reason, or interpretation based on a certain situation or piece of information. It can be translated as 'that's why', 'no wonder', or 'it means'.
Examples
Kare wa kaze wo hiite iru. Dakara, koe ga kasurete iru wake da.
He has a cold. That's why his voice is hoarse.
Kyou wa isogashikatta. Dakara, tsukareta wake da.
Today was busy. No wonder I'm tired.
Tanaka-san wa takusan benkyou shite iru. Dakara, shiken ni goukaku shita wake da.
Tanaka has been studying a lot. It means he passed the exam.
Kanojo wa yuumei na kashu no musume nan da. Dakara, uta ga jouzu na wake da.
She's the daughter of a famous singer. That's why she's good at singing.
Practice
Grammar content sourced from hanabira.org.