Body language means that a teacher does some movements without any words to express what he wants his students understand。 But compared with spoken language, body language can be more directly and vividly in communication。 For example, when teachers want to teach the concept of “chair”, and the teacher just says “chair” in verbal language, but some students may not understand “chair”。 With the help of body language, the teacher can point at the seat where students sit to express this word。 And students can know the meaning of the word quickly。 Besides, when teachers teach a new word “blackboard” and the teacher says “come to the blackboard” to a student, but the student can not follow the teacher’s order because their vocabulary and expressive ability are limited。 The teacher can point to the student or look at the student, and then the teacher can raise his hand to invite the student to the blackboard。 The student will carry out the teacher’s order and take action quickly without any difficult。 At the same time, the use of body language requires us to use body language correctly, avoid ambiguity and present what we want to convey perfectly when we use body language。