Language expression ability. Language is the main means for teachers to spread knowledge and communicate with students, and they must have strong language expression ability to engage in education. The basic requirements for teachers' language are: first, correct pronunciation, standard pronunciation, speaking Mandarin, and the content expressed can be accepted by students smoothly; Secondly, it is necessary to use words accurately, complete sentences, accurately convey ideological content, and ensure that it is scientific and easy to understand, so that students can understand it; Third, it is necessary to be coherent and logical, be good at using independent language, tell knowledge or explain problems, with clear levels, prominent points and clear conclusions; Fourth, we should be inspiring and infectious, master the language art of dialogue, and be good at encouraging students to think and express their personal opinions in dialogue, so as to form a vivid and humorous language style and arouse students' emotional resonance in communication; Finally, the volume, speech speed, intonation and other aspects should meet the requirements of the environment and expression content, meet the needs of students' physical and mental health, and be moderate and diverse. Teachers' language expression ability is a basic skill. On the basis of improving the comprehensive quality of culture and business, teachers should consciously exercise and correct their own shortcomings in educational practice, so that their language expression ability can reach a higher level. In order to enhance the effect of language expression, teachers should also be good at using nonverbal communication means to match language expression, such as expression, gesture, posture, distance from students, direction of speaking and so on. These appropriate treatments can enhance the effect of expression.