这个改错怎么改This picture shows what a mother teachers her own son

这个改错怎么改
This picture shows what a mother teachers her own son. When her son get full marks in the exam,she says her son is really more clever.However,when her son didn't pass the exam,she complains that the teacher is not well enough.
Nowadays,some parents don't know how to teach his children.They only know they should love their children.And what they do may harm their children in the end.
In my opinion, the mother should tell her son to work hard when he fails the exam rather than put blame to the teacher.Children need be taught what to do and get encouragements from both teachers and parents.