Japanese by Example
Learning through examples in manga

Contracting 〜ているのだ to 〜てんだ

A verb ending in 〜て+いる followed by the particle のだ may contract as てんだ.

First, the い in 〜て+いる is dropped. Next, る becomes ん due to の following it. Finally, の becomes ん when followed by だ to です.


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