teaching language skills—listening, speaking, reading, and writing：教学语言技能 -- 听、说、读、写 language testing and assessment：语言测试和评估 language for specific purposes：用于特定目的的语言 computer-assisted language teaching：计算机辅助语言教学 discourse analysis：话语分析 formulaic language：公式化语言 bilingualism and multilingualism：双语和多种语言 identity and language：身份和语言 second language acquisition：第二语言习得 teaching pronunciation：教学发音 grammar and vocabulary：语法和词汇 task-based language teaching.：任务型语言教学。