假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（∧)，并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：
1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
In our English class yesterday, we had a lesson, during what we learned about how body language is crucially in communication. Body language includes various type, like facial expressions, gestures, postures, and eye contact. Facial expressions like smiling or frowning show our emotions, while gestures like waving or pointing helps us express ourselves. Our postures, eye contact also send messages.
Body language is important because it assists us to understanding others better. It adds meaning to what they say and can show our feelings. Moreover, it's important to be aware to cultural differences in body language. Paid attention to body language, we can not communicate more effectively and avoid misunderstandings.
