On-line Te Reo Māori Dictionary

Ko wai rā kei te tapahi i te mīti?
Who is chopping the meat?
Asking who - Ko wai...?

E tapahi ana ia ki te kani.
He was cutting with the saw.
Simple sentences: present tense - e... ana

I tapahi a Marama i a ia.
Marama cut herself, or, Marama cut him.
Simple sentences: past tense - i

Ka tapahi au i te pātītī.
I will cut the grass.
Simple sentences: future tense - ka

Me tapahi e Honi te wahia.
Honi had better cut the firewood.
Simple sentences: you should - me

I tīkina te māripi e ia, kātahi ka tapahi ia i te pāua.
He fetched the knife, then he chopped the pāua.
Passive sentences - tikina...

Ko Pita tērā kei te tapahi i te mīti.
That's Pita chopping the meat.
That (over there) - tērā

Āwhea koe tapahi ai i te pātītī?
When will you mow the lawn?

I tapahi a Rina ia a ia.
Rina cut herself (or Rina cut him/her).