“关于”标记话题有语义基础,同时还要满足句法条件。“关于”的词汇意义——引入后续单位所指内容的话语主题——同句法话题的语法意义是一致的。“关于X”能管辖从词语到语篇各级语言单位,只有管辖句子时,“关于”才能标记句法话题。“关于”标记话题常常居于句首,也可以居于句中或句尾。 “About ” tag topic has a semantic basis, but also to meet the syntactic conditions. The Lexical Meaning of “About” - The subject of discourse introducing the content of subsequent units - is consistent with the grammatical meaning of the syntactic topic. “About X ” can be controlled from words to texts at all levels of language units, only the jurisdiction of the sentence, “About ” to mark the syntax topic. “About ” Marked topics often reside at the beginning of a sentence, and can also reside in sentences or at the end of a sentence.