模糊限制语是模糊语言中非常重要的组成部分,在英语课堂教学中发挥了不可忽视的重要作用。本文首先介绍了模糊限制语的定义及其分类,然后结合会话原则,礼貌原则及面子理论,分析探讨了模糊限制语在英语课堂教学中的四大主要功能,即:提供准确而适量的信息、填补教师课堂词汇的空白、教师面子的维护以及学生面子的维护。 Hedges are a very important part of vague language and play an important role that can not be ignored in English classroom teaching. This paper first introduces the definition and classification of hedges, then analyzes the four major functions of hedges in English classroom teaching by combining the principles of conversation, politeness and face theory, namely: providing accurate and appropriate information, Fill the gaps in the classroom teachers vocabulary, teacher face maintenance and student face maintenance.