On-line Te Reo Māori Dictionary

Kei te whakapakari tinana rātou ki te papa tākaro.
They are exercising at the playground.
Simple sentences: present tense with a verb - kei te

Kei te whakapakari tinana rāua ki te whare hākinakina.
Those two are exercising at the gym.
Simple sentences: present tense with a verb - kei te

Me whakapakari ia
He should train
Simple sentences: you should - me

Kei te whare hākinakina a Ari e whakapakari ana.
Ari is at the gym working out.
Sentences with a subclause - e... ana