#83: Why are the children laughing?
He aha ____ e ____ nei?
Why... now? — He aha... e... nei?
Several structures ask why. He aha ai? is a general “why?”. He aha … i … ai? asks why something happened, referring to a past cause. He aha … e … ai? asks why something will happen. For present situations, He aha … e … nei? asks what is happening right now to cause the action.