母语的英文：
native language
mother language

参考例句：

I can only speak my mother tongue.
我只会说母语。

The French feel passionately about their native tongue.
法国人对他们的母语非常热爱。

Their requests are verbose in comparison to those of native speakers.
与母语人士相较，他们的要求过于冗长。

He read a poem in his native language.
他用母语朗读了一首诗。

He took to French as though it had been his native language.
他觉得法语就像母语一样容易学。

She took to German as though it had been her native language.
她很容易地学会了德语，就好像德语是她的母语。

Usually a linguist is skilled in a number of languages besides his own.
除了母语外，语言学家一般通晓许多种语言。

It is a problem as to how they can preserve their mother tongue and at the same time communicate with the others.
如何维持他们的母语，又使他们能与其他语族沟通，是一个问题。

"We may well be unusual, even unique, in using another language to help in the learning of a mother tongue."
利用另一种语言来协助教导母语，可能是不寻常甚至独特的作法。

Even the cleverest people marvel at a childs ability to learn his native language in such a short time
即使最聪明的人对孩子在如此短的时间里学会他的母语的能力也会感到惊讶。

native是什么意思：
n. 当地人；本国人；当地居民
adj. 自然的；本国的；与生俱来的

They had many talks with the native.
他们已经同土著人谈过几次。

The natives were kind and gentle.
当地的人很和善，也很斯文。

We have our native flowers.
我们有土生土长的花儿。

language是什么意思：
n. 语言，语言文字；表达能力；术语；粗话；文风，措辞

Pilipino language
菲律宾语

natural language
自然语言(指人类语言集团的本族语,与世界语或计算机语言等人造语言相对)

Has a feeling for language.
对语言有领悟力

mother是什么意思：
n. 母亲；大娘；女修道院院长；起源
v. 像母亲般地照顾

The girl is a reflection of her mother.
那女孩长得和她母亲一模一样。

The children clustered round their mother.
孩子们聚集在母亲身边。

Mother footed the stocking.
妈妈给这袜子换了底。