N3 — outside your level filter

Is said whole, with nothing composed onto it and takes no だ／です, so there are no forms to conjugate.

得とくをする

tokuwosurucome out ahead, benefitN3expression

Example sentences2

まとめ買がいをすると得とくをすることが多おおい。

matomegai o suru to toku o suru koto ga ooi.

Buying in bulk often means you come out ahead. neutral

早はやめに予約よやくすると得とくをするらしいよ。

hayame ni yoyaku suru to toku o suru rashii yo.

Apparently you benefit if you book early. casual