kātahi (nā) ka ...
1. that's better, now you're talking, I'm glad to hear it, that's terrible - an idiom used to show agreement or support, or sometimes disapproval, for a comment about a change to what is considered to be the correct course of action.
E pā, kua whakaaro ake ahau me tuhi tāku tuhinga whakapae ki te reo Māori kē. Kātahi nā ka tika! / Sir, I am now considering writing my thesis in Māori instead. Now you're on the right track.
