first language

英 [ˌfɜːst ˈlæŋɡwɪdʒ]

美 [ˌfɜːrst ˈlæŋɡwɪdʒ]

n.  母语; 第一语言

牛津词典

noun

• 母语；第一语言
  the language that you learn to speak first as a child; the language that you speak best
  1. His first language is Welsh.
     他的母语是威尔士语。

柯林斯词典

• 母语;第一语言
  Someone'sfirst languageis the language that they learned first and speak best; used especially when someone speaks more than one language.

英英释义

noun

• one's native language
  Synonym:mother tonguematernal language

双语例句

• Analysis of the Roles of First Language in Second Language Acquisition;
  在第三语言习得和输出中第一第二语言的角色分析（英文）
• English is spoken as the first language in many countries.
  英语在许多国家被当作第一语言使用。
• English is not used as the first language in China.
  在中国英语不是被用作第一语言。
• The first language I spoke was Chinese and I learned English later, but I forgot all my Chinese.
  我会的第一种语言是汉语，后来我才学得英语，但是现在我已经把汉语全忘了。
• 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。
• It launched its first language course last year for 40 people.
  孔子学院去年开设了首个语言课程，共收学员40人。
• 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 the first language in none of these countries.
  英语在这些国家中都不是第一语言。
• English is used as their first language.
  英语被用作他们的第一语言。