摘要：This article is written in an attempt to argue that there is a need of uniformity in terms of grammar when English is taught as a foreign language. Thus, the idea that prescriptivism is "out of date" as well as "not permissive to language change" is corrected by presenting some arguments of the need to maintain its application. Some of those are related to language testing, language environment, size of foreign language classess and text books
关键词：Prescriptive grammar; descriptive grammar; English teaching
