For many students, the tremendous demand of schoolwork has already made them feel that learning the mother tongue is a strain.There is no reason to pile on the pressure by studying a third language.

• 由于学生们在求学时代要应付的功课实在太多，要他们学习母语已经不胜负荷了，如果要他们再学习第三语文，更是提不起劲。