On-line Te Reo Māori Dictionary

Whakakāngia te umu.
Turn on the oven.
Commands using the passive - Tāpirihia, Tīkina...

Tuatahi, whakakāngia te umu.
First, turn on the oven.
Ordinal numbers (First, second, third...) - tuatahi, tuarua...

Kātahi ka whakakāngia a Ari te raiti.
Then Ari switched on the light.
And then... - kātahi ka...

whakakāngia te umu
turn on the oven

Whakakängia te umu. AND Me whakakä te umu.
Turn on the oven. You should turn on the oven.

Whakakāngia te tukuata.
Turn on the projector.

Whakakāngia te whakamahana.
Turn on the heater.

Whakakāngia te raiti.
Turn on the light.