帮我看看这英语演讲稿有什么错误

题目

帮我看看这英语演讲稿有什么错误
As is known to all.On May 12th .A big earthquake happen in Wenchuan.We can catch sight of many people lost their home on TV.A number of people live in dark and cold place several hours .But they didn't give up .they believe they can live .
When an earthquake happen .how can we do If we are inside .we should hide under the table until the shaking stop .
If you are outside ,you must away from high building and run up to empty place .
Keeping calm play an important part in earthquake .
顺便帮我加个容易背的开场白和结束语

答案

hello everyone it is my great honour to be here to give you a speech.结束语：OK thank you ,this is all my speech ,thank you for listeningA number of people live in dark and cold place FOR several hour...