Module 5 Unit 9 Be careful简单祈使句的学习简单祈使句的学习Guessing GameKeep slience!Be quiet!Guessing GameDont smoke!No smoking!Guessing GameDont play football!Guessing GameNo parking！Guessing GameDont eat!Guessing GameDont pick the flowers!祈使句祈使句 : 是表示是表示请求请求、命令命令、建议建议等句子，等句子，通常说话的对象是第二人称通常说话的对象是第二人称you, you常被省略。常被省略。Read and observe(观察观察)Be quiet！Be careful! Be clean!Keep slience!Stand up!Come in!祈使句的句型：祈使句的句型： Be + 形容词！形容词！ 动词原形动词原形 + 其他！其他！变否定变否定直接把直接把Dont 放到句首！放到句首！Dont be late! Dont smoke!Be ! Its dangerous.Dont the tree.Dont the wire. Its dangerous.Its dangerous. Dont run !Dont . Its dangerous.climb, careful, play with fire, touch ,downstairsBe careful ! Its dangerous.Dont climb the tree.Dont touch the wire.(电线)Dont run downstairs !Dont play with fire . Its dangerous.climb, careful, play with fire, touch ,downstairsBe careful, be careful.Dont run downstairs.Its dangerous.Dont climb the window.Its dangerous.Dont play with fire.Its dangerous.Be careful, be careful.Lets do sth. 让我们做某事让我们做某事Let sb. do sth. 让某人做某事让某人做某事也属于祈使句也属于祈使句Lets play a game. Let me help you.Lets not talk in class.直接在动词前加直接在动词前加not祈使句祈使句,无主语,只用动词就可以.表示请求或命令,加上please表客气。如果变成否定句， Dont开头是规律。No talking!是警示，祈使句用法要牢记。Lets do exercise.1. Jim, _ me a hand. A. gives B. is giving C. will give D. give2. _ careful, Jenny! There is a tree in front of you. A. Am B. / C. Be D. Was3. Lets _ our time. A. not waste B. no wasting C. not to waste D. no waste4. Please _ do it. A. he B. let him C. let he D. himin class1. Be quiet.2. Take notes.3. Listen to the teacher carefully.4. Dont eat in class.on the road1.Walk on the zebra crossing.2. Be careful.3. Dont play football.4. Dont run fast.in the restaurant1.Line up.2. Dont push.3. Dont make noise.4. Dont waste food.Thank you!