Zhè / wèi / lǎoshī / zài / xuéshēng / xīnzhōng / dàitì / fùmǔ / fāhuī / le / zhòngyào / zuòyòng。

这位老师在学生心中代替父母发挥了重要作用。

In the students' eyes, this teacher played an important role in place of their parents.