研究课题涉及社会语言学、语篇分析，英语语言教学等领域。
His research areas involve sociolinguistics, discourse analysis, and teaching of the English language.
婉语是一个语言学概念，同时也是一种社会现象和文化现象。
Euphemism as a linguistic concept is also a social and cultural phenomenon.
网络交际语逐渐成为一种崭新的语言变体，该变体有独特的构词方式，在社会语言学的语域方面有着自身的特点。
Cyber language gradually became one kind of new language variety, which has a particular way of word-building and has its own features in sociolinguistics, especially in register.
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