xit2reason wordrequires a modifierreason

彼来終此処之故此何?

zap2 sak2 ta ka1 hue a xit2 ka1 nan2?

For what purpose did he come here? / 他来这里的目的是什么?

汝来此処之故此何?

mua2 sak2 ka1 hue a xit2 ka1 nan2?

What's the reason for your coming here? / 你来这里的原因是什么?