第一篇

　　 Please be quiet, everyone. There's something you need to know. As our teacher is ill,　 we're to have reading class together with the students of Class Three today. Please take your benches with you to their classroom. The oral class will be put off until tomorrow. That's all. Thank you.

　　 第二篇

　　 Attention please, comrades. There is going to be a talk on American Family in the Lecture Hall this afternoon. It'll be given by an American professor _____ Mr. Smith. Those who want to attend please be there at 2∶30 Any　 question? If no, that's　 all. Thank　 you.

　　 第三篇

　　 Listen, please, I have something important to tell you. We're going to hold a get-together with some foreign students at 7∶00 p. m. on Friday in the Foreign Student's Dining Hall. Any one who wants to take part in it, please be there on time. Thank you.

　　 第四篇

　　 Ladies and gentlemen, Listen, please. This afternoon we're going to visit the Great Wall,　 the bus will stop at the foot of the Great Wall. Three hours later, we'll get together here and back to the hotel. When you go to visit the Great Wall, please take your valuable things with you.　 And remember to come back to the bus at five o'clock. Do be there on time.

　　 Does everyone understand?

　　 Since everyone understands very well.

　　 Thank you.