来自《耶鲁大学开放课程：心理学导论 第6集 第6集》
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who have studied people和萨姆·苏普拉所进行的 -
who have been in the United States他们研究了在美国生活了 -
for many, many years like 30, 40 years三四十年以上的人们 -
and seeing how well they have come to speak English.探究了这些人们讲英语的流利程度 -
And it turns out the big determinant作为移民 -
of how well you speak English as an immigrant你的英语口语究竟有多么流利 -
isn't how smart you are.最大的决定因素并非你有多么聪明 -
It's not how many family members you have when you're here.并非是你此时有多少个家庭成员 -
It's not your motivation.也并非是你的动机 -
It's how old you were when you started.最大的决定因素是开始学习语言时的年龄 -
It turns out that if you start learning a language,如果你在出生的头几年里开始学习一门语言 -
a second language is where most of the work's been done,非常努力地学习了第二门语言