开头：hello everybody welcome to today's 节目名, a place where you can hear afatic english as it really spoken by native speakers i'm 你的名字 and will be the host and join by 你搭档的名字(如果要是有搭档)today
well... in today's programmes i will show u lots of things that must be attract ur eyes including................(各种各样的东西名) that must be contains somewhat you favorite
ok.. let's have a short break and will be back soon (此时播放广告)
广告过后就是看你自己的了或者请出你的搭档为你介绍东西啊
结尾：ok that's for today's programe i wonder these tings i introdced can bring you good mood if any question please contact to (你的节目名) or email to me at(你的邮箱) i'm 你的名字 and see u next time on our compus readio (节目名) bye...
很平常的开始和结尾 用的是最常见的词汇 容易记住 记住要口语化 不要说的很死板
Dear teachers and schoolmates，
May I have your attention please? I have an announcement to make． In order to help us learn more about China Spaceflight， Professor Li Bo from Peking University will give us a lecture． He will talk about the background of the development of China Spaceflight as well as its process． Besides， astronauts and something about the series of Shenzhou Spaceships will also be introduced． The lecture will be held on Thursday， the fifth of January and it will begin at 2：30 pm in the Lecture Hall of our school．
Anyone who’s interested in the topic is welcome to attend the lecture．
Don’t forget to be on time．
That’s all． Thanks for your attention．
追问不要范文。。。。
本回答被提问者采纳