第二语言 second language ; English as a Second Language ; Chinese as a Second Language ; secondary language
英语作为第二语言 ESL ; English as a Second Language
第二语言习得 Second Language Acquisition ; SLA
英语为第二语言 ESL ; English as a Second Language ; English h as a Second Language
第二语言学习 second language acquisition
第二语言习得理论 Second Language Acquisition ; Theory of Second Language Acquisition
法语作为第二语言课程 French as a Second Language
第二语言习得研究 Studies in Second Language Acquisition ; Rod Ellis
英语作为第二语言课程 ESL
汉语是母语，英语是第二语。
英语是这座城市的第二语言，紧接着是俄语和土耳其语。
English is the city's second language, closely followed by Russian and Turkish.
对第二语教学和外语教学理论从功能的、交际的和认知的角度进行了理论回顾。
Second and foreign language acquisition theories are reviewed from functional, communicative, and cognitive points of view.
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