求翻译：亲爱的Professorjnhnson，我是光明中学的学生会主席，李明，我想邀请你到光明中学作一个关于如何提高英文写作的讲坐，时间是9月25号下午四点，讲座45分钟，有15分钟和同学们交流，希望你能来是什么意思？

Dear Professorjnhnson, I am bright middle school's student association president, Li Ming, how do I want to invite you to make one to the bright middle school about to enhance English writing to speak the seat, the time am in September 25 4 pm, the course 45 minutes, some 15 minutes exchange with schoolmates, hoped you can come