啊，sometimes it happens to me too. If you want your mother and second language to be balanced practice will be needed. That is how a person that knows many languages maintains its languages at a certain level. Also I think you have focused too much with English, hahaha. This is all in my opinion. You can try researching if you want. 

祝你们好运！

不同国家的差异造就了不同国家的语言。在世界文化不断融合的过程中，我们该怎样权衡自己的母语和第二语言？

对不起Ann，我听不懂你的问题，可是它有意思。