On-line Te Reo Māori Dictionary

I topea te rākau e Rōpata.
The tree was cut by Bob.
Passive sentences - tikina...

Kei te oma a Mere rātou ko Hariata, ko Matiu, ko Ropata.
Mere, Hariata, Matiu and Ropata are running.
Talking about more than one person - ...rāua ko..., rātou ko...

He tūpara tā Rōpata,.
Rōpata has a shotgun.

E āwhina koe ahau i a Aria.
You are helping Aria.