精选优质文档-倾情为你奉上第七讲 祈使句【观察一】请仔细观察下列例句,你能补全结论部分所缺的内容吗?1. Tidy up your room, Sam.2. Open the door, Anna.3. Be careful when crossing the road.【结论一】祈使句是表示向对方发出_ 、提出_ 或要求,要对方做某事或不做某事,带有祈使语气的句子。主语为第二人称,但是常常被_ 。【观察二】请仔细观察下列例句。(A) (B)1. Walk quickly, Tom! 1. Be a good boy, Tony.2. Come in, please! 2. Be polite when you are there.3. Open your books! 3. Be