In this article, the theories of focus and focus structure are introduced, based on which the sentences including ＂mei＂ in Chinese are analyzed. Focus in a sentence refers to the emphasized information. Focus structure, as a hot topic in the field of linguistics and a description of sentence structure,shows the information arrangement. And the negative structure, as a structure sensitive to focus in a sentence, is a phenomenon affected by sentence focus. The character ＂mei＂ in a Chinese negative sentence, is an operator sensitive to focus a...
