mother tongue 母语 ; 本族语 ; 本国语
Preservation of mother tongue 母语维护
mother tongue didactics 母语教学法
as mother tongue 作为母语
While learning a second language, students should also enhance their awareness of the importance of mastering their mother tongue.
在学习第二语言的同时，学生也应该更加重视掌握母语的重要性。
Hoping to discover what language a child would speak if he heard no mother tongue, he told the nurses to keep silent.
他希望发现一个没有听到母语的孩子会说什么语言，他让护士们保持沉默。
In different countries around the globe, English is acquired as the mother tongue; in others it is used as a second language.
在世界各地的不同国家，英语作为母语被习得；在其他地方，它被用作第二语言。
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