On-line Te Reo Māori Dictionary

He aha koe i tōmuri ai?
Why are you late?
Why did? - He aha... i... ai?

He aha koe i tae tōmuri ai i tēnei rā?
Why did you arrive late today?
Why did? - He aha... i... ai?

I tae tōmuri mai ia i te pō rā.
He arrived late last night.
Simple sentences: past tense - i

Ka tōmuri a Ria, ki tō mōhio? Tērā tonu pea. E rongonui ana tōna tōmuri.
Do you think Ria might get here late? Quite possibly. Her tardiness is well-known.
Perhaps - Tērā pea

Ki te tōmuri a Amaru, ka hōhā au.
If Amaru is late, I will be annoyed.
If using ki - ki

Ki te haere koe mā raro, ka tōmuri kope.
If you go on foot, you will be late.
If using ki - ki

Nā te aha koe i tōmuri ai?
For what reason are you late?
For what reason? - nā te aha ai?

Nā te ua au i tōmuri ai.
Because of the rain, I am late.
For what reason? - nā te aha ai?

Aroha mai e hoa. I tōmuri te pahi.
Sorry mate, the bus was late.

Ko Tōmuri Te Awa tōku tipuna.
Tōmuri Te Awa is my ancestor.