意大利语是我的母语，但我六岁时开始学习英语。

Italian is my ___mother ___tongue but I started to learn English when I was six.

除了我的母语日语外，我还能流利地说英语和法语。

I can speak English and French fluently, added to my ___mother ___tongue, Japanese.

她用母语教她的孩子，以保护他们的文化遗产。

She taught her children in their ___mother ___tongue to preserve their cultural heritage.