1.
My first language is Tibetan.
我的第一语言是藏语，
2.
The Influence of L1 Experience on the Perception of L2 Tones;
第一语言经验对第二语言声调感知的影响
3.
Is First Language Acquisition an Obstacle to Second Language Learning?;
第一语言习得是第二语言学习的障碍吗？
4.
Study on Lexicon Acquisition Order of the First and Second Language;
第一语言与第二语言词汇习得顺序研究
5.
How Critical Period Determines the Acquisition Difference between First Language and Second Language;
临界期如何决定第一语言与第二语言习得差异
6.
A Brief Talk on Children s First Language Acquisition and Adults Second Language Acquisition;
浅谈儿童第一语言习得与成人第二语言习得
7.
Study on the Comparision Between First Language Acquisition and Second Language Acquisiton;
第一语言习得和第二语言习得比较研究
8.
First Language Acquisition and Second Language Learning
第一语言获得与第二语言学习——兼谈汉语文教学与汉语教学
9.
Similarity Between L1 and L2 in the Developmental Pattern of Grammar and Its Enlightenments--Taking English Language as an Example;
第一语言与第二语言语法习得模式的相似性及启示——以英语为例
10.
an American whose first language was Spanish.
第一语言是西班牙语的美国人。
11.
French is spoken as the first language in this country .
在这个国家法语被当作第一语言来说。
12.
She grew up in Spain, so her first language is Spanish.
她在西班牙长大，第一语言是西班牙语。
13.
Analysis of the Roles of First Language in Second Language Acquisition;
第一语言对第二语言的习得所产生的作用的变化(英文)
14.
Similarities and Differences of Developing "First" and "Second" Language Proficiency: Implications for Foreign Language Teaching;
第一语言和第二语言语言水平发展的异同及其对外语教学的启示作用(英文)
15.
FLUB(First Language Under Bootstrap)
引导程序控制下的第一语言
16.
Roles of L1 and L2 in L3 Acquisition and Production
在第三语言习得和输出中第一第二语言的角色分析(英文)
17.
Any of the languages of the Native Americans.
印第安语美洲土著人的任一种语言
18.
First paragraph: write about the population, ethnic groups and the languages spoken by them.
第一段：写一写人口，民族，语言。