请帮忙完成一篇英语作文内容：body language is important in many cases.文章要包括

Body Language is Important in Many cases.
Body Language is part of non-verbal communication.It sometimes convey more information than what we say so they are widely used among professionals.For example,in the US elections the candicates love to raise their hands and make positive gestures as their speeches will be more convincing.Lecturers and academics attending conferences and seminars love to use their body language (such as aggressive pointing,knocking with fists) to illustrate how important their findings are.
同学为什么要family parties啊?我想不明白!编不出来啊!=_=|||