NOTICE (Attentiong please !) A foreign professor comes to our school to have a academic exchange( on sunday这个是我自己加的时间，你可以改动). students and teachers are required to be well-prepared for that in advance. And a seminar is going to be held . All the students are Welcome . we hope that all of you take an active part in it.(That's all .Thank you.) xxx, 01,05,2011 书面通知就是去掉括号里的内容，如果是口头通知，加上括号里的就行。