开场白部分：Ladies and gentlemen,May I have your at tention,please?I have an announce ment to make.
正文部分：All the teachers and students are required to at se take your note books and make notes. Please listenc are fully and we’ll have adiscussion ing se come on time and don’t belate.
结束语部分：Please come and join in y body is welcom to at tend it.I hope you’ll have an icetime ’k you.