Good at.....

He  ..... (adjective)........  ki te ..... (kupu mahi)...
Adjective....
tino pai (very good)
pai (good)
āhua pai (OK good)
koretake (no issue - useless)
kaha (strong)
toa (champion)

Kupu Mahi:
waiata (singing)
korero (speaking)
mahi mara (gardening)
panui pukapuka (reading books)

He pai ia ki te waiata.
He pai ia ki te panui pukapuka.
He tino pai ia ki te korero.