Keynote speech
　　A Keynote speech is to outline the subjects to be addressed by other speakers at an event，and to establish the tone of a meeting or program.
　　基调发言也称主题演讲，目的就是限定一个集会上其他演讲者演讲的主题，奠定一个会议或活动的基调。基调发言也直接关系到确立大会的感情基调。
　　Eye contact 眼神交流
　　Move your eyes slowly from person to person， and pause two or three seconds with each listener；
　　眼睛慢慢地从一个移动到另一个人，在每一个人身上停留两到三秒钟时间；
　　Look at people straight or look at the bridge of their noses or chins；
　　眼睛直视听众，或看着他们的鼻梁或下巴
　　Look for the friendlier faces and smile at them one by one， then move on to the more skeptical members and smile at them one by one also；
　　找到那些看起来比较友善的听众，逐次朝他们微笑；然后目标转向那些有些怀疑的听众，也逐渐朝他们微笑；
　　Imagine the audience in bathrobes in case you are nervous.
　　如果你感到紧张，不妨想象听众都穿着浴衣的样子。
　　How to communicate with the audience 怎样与听众交流
　　A message worth communicating； 要有值得交流的观点；
　　Gain the listeners' atention： capture their interest and build their trust； 引起听众的注意：抓住他们的兴趣并赢得信任；
　　Emphasize understanding； 重视理解；
　　Obtain their feedback； 获得反馈；
　　Watch your emotional tone； 注意声调要有感情；
　　Persuade the audience； 说服听众；