lǎo shī / yòng / hé kǒu hū / de / lì zi / bāng zhù / wǒ men / qū fēn / bù tóng / de / yùn mǔ

老师用合口呼的例子，帮助我们区分不同的韵母。

The teacher used examples of hekouhu to help us distinguish different finals.