批改

pī gǎi juàn zi

批改卷子

correct students' papers

yòng huáng bǐ pī gǎi

用黄笔批改

make corrections in yellow ink

pī gǎi wán zuò yè

批改完作业

correct students' papers

pī gǎi shì juàn què shí shì jiàn kǔ chāi shi

批改试卷确实是件苦差事。

Marking examination papers is a real grind.

nǐ pī gǎi wán juàn zi zuò shén me

你批改完卷子做什么？

How about after you grade your papers?