National lunguage

National language is difficult.
I am teaching national language to my daughter almost every weekend, because she is not do well it. Knowledge of national language influence to other subject. So, it will must be the most important subject.
But there is a problem for it. The problem is that I'm not do well it, too. So, she and I are studying it with difficulty.
At the time I can get some new knowledge about national language. It's study not only for my daughter, but also for me.