韩礼德功能语法可以作为英语教学的理论框架,以大学英语课堂教师话语为语料,通过对教师话语中情态动词的人际功能进行分析,可以发现中和低值情态动词的使用频率明显高于高值的情态动词,说明教师正努力营造平等、轻松的教学环境。 Halliday’s functional grammar can be used as the theoretical framework of English teaching, college English teacher’s discourse as a corpus, by analyzing the interpersonal function of modal verbs in the teacher’s discourse, we can find that the use frequency of neutral and low value modal verbs is significantly higher than the high Modal verb, indicating that teachers are trying to create an equal and relaxed teaching environment.