mother tongue

英 [ˌmʌðə ˈtʌŋ]

美 [ˌmʌðər ˈtʌŋ]

n. 母语; 本国语

牛津词典

noun

母语;本国语;本族语
Yourmother tongueis the language that you learn from your parents when you are a baby.

noun

England is not my mother country, but English is my mother tongue.
英国不是我的祖国，但英语却是我的母语。
It means that learners should compare and contrast their mother tongue with the language they are learning.
语言学习者应该把他的母语和他正在学习的外语比较对照一下。
He can't speak his mother tongue, much less english.
他连自己的母语都说不会，更别提英语了。
I think they all love you, I like to listen to your mother tongue with their frenzied shouting your name.
我想他们都很爱你，我很喜欢听他们用你的母语疯狂喊你的名字。
Today students of English, even if English is their mother tongue cannot understand his jokes.
今天学习英语的学生，甚至是以英语为母语的人们，仍然听不懂的玩笑。
My mother tongue is chinese.
我的母语是中文。
He wrote the article in his mother tongue.
他用母语写的文章。
This is because the deeply rooted thinking that the complete mother tongue exchanges environment educate habit.
这是因为完全的母语交流环境造就的根深蒂固的思维习惯。
By the end of the week, I couldn't even remember one word of my Mother Tongue.
在这个星期快结束之时，我甚至记不起我母语中的任何一个词藻。
We've all heard of Chinese people who can't speak a single dialect of their mother tongue.
我们都听到了中国人民谁不能讲母语了单一的方言。