N5 — 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.
興味がある
kyoumigaaruto be interested in somethingN5expression
Example sentences2
前から日本の歴史に興味があるんだ。
mae kara nihon no rekishi ni kyoumi ga aru n da.
I've been interested in Japanese history for a while. casual
弟は科学に興味があるようです。
otouto wa kagaku ni kyoumi ga aru you desu.
My younger brother seems to be interested in science. neutral