First, formal language tends to be more polite.
首先，正式的语言往往更有礼貌。
He got a first in Modern Language.
他在近代语言一科中获得第一名。
First of all, we have a wide range of language courses.
首先，我们有种类多样的语言课程。
First, we know that all human beings have a language of some sort.
首先，我们知道所有的人类都有某种语言。
English was his first language and he always had a terrific ear.
英语是他的第一语言，而且他的听力一直很好。
意大利语是我的母语。
他的母语是威尔士语。
The best way to learn a foreign language is to put practice first.
学习外语最好的方法就是把实践放在第一位。
But language is foremost not just because it came first.
但是语言是最重要的，不仅仅因为它是最先出现的。
Try not to think in your first language and translate your ideas into English.
试着不要用你的母语去思考，把你的想法翻译成英语。
English isn't your first language but you speak and express yourself very well.
英语并不是你的第一语言，但是你却说得很好并且表达得很棒。
The children of the rich learn English as their first language.
富家孩子把英语作为第一语言。
Nepali is the national language with 47.8% of the population speaking it as their first language.
尼泊尔语是尼泊尔的国语，大约47.8%的人口将它作为第一种语言。
Imagine you can talk to native speakers just like you talk in your first language.
想象你可以与以英语为本土语言的人谈话就如同与别人说自己的母语一样。
Today, I think I use English more than my first language.
如今，我用英语比用我的母语要多。
Most people speak English as a first language in the USA.
在美国，大多数人把英语作为第一语言（主动语态）。
English is used as their first language.
英语被用作他们的第一语言。
In the late fourteenth century, English became the first language again.
在14世纪末，英语再次成为第一语言。
No matter what your first language is, you should treasure it all your life.
不论你的第一语言是什么，你一生都应珍惜。
First, language input can have a determining function in the second language acquisition.
第一，语言输入对第二语言习得有着决定性的作用。
I've just been to my first language class.
我刚刚上了我的第一堂语言课。
English can be a hard language to grasp if it isn't your first language.
英语是一个难以掌握的语言如果不是你的第一语言。
Chinese is spoken as a first language by most people in China.
在中国大多数人把汉语作为第一语言。
French did not replace English as the first language.
法语却没有取代英语而成为英国的第一语言。
Why? English is the first language in none of these countries.
为什么会这样呢？英语并不是这些国家的第一语言。
It is also the first language of sport and science.
它也是体育和科学使用的第一语言。
English is not used as the first language in China.
在中国英语不是被用作第一语言。
All of our teachers speak English as their first language.
所有老师把英语作为第一语言。
Similarly, they can't ask if English is your first language.
同样的，他们也不能问你英语是否是你的母语。
Similarly, they can't ask if English is your first language.
同样的，他们也不能问你英语是否是你的母语。
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