(
课件网) Unit 2 No Rules, No Order Section A Grammar 学 习 目 标 1. Observe, understand, and summarize the sentence structure, meaning-expressing function, and usage of imperative sentences. 2. Understand the usage of modal verbs such as can, must, and have to, and use them correctly and flexibly in specific contexts. 3. Cultivate students’ability to observe and summarize, analyze problems, and develop good English learning habits. Stand up. Sit down. Take a seat. Open your book. Raise your hands. Clap your hands. Use your pen. I say, you do. Lead-in Game Time Look at the blackboard Walk in the hallway. Don’t run! Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter. Can we bring our phones to class No,we can’t. We must keep them in our lockers. Can we eat snacks in class No,we can’t eat in class. We have to eat in the dining hall. Look and learn Which sentences are imperative sentences（祈使句） Which sentences contain modal verbs（含有情态动词） What are the modal verbs 祈使句 含有情态动词 3a Read the sentences. Do the verbs in bold need to change forms Why Walk in the hallway. Don’t run! Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter. Can we bring our phones to class No,we can’t. We must keep them in our lockers. Can we eat snacks in class No,we can’t eat in class. We have to eat in the dining hall. No, they don’t. Because the verbs appear in imperative sentences or after modal verbs. Look and learn 在 祈使句中 和 情态动词后，动词均用原形。 Look and learn. Walk in the hallway. Don’t run! Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter. 祈使句的特点 1.通常省略_____ 。 2.其肯定形式常以_____开头，否定形式是_____。 3.祈使句句尾用_____或_____。 主语you 动词原形 don’t 句号 感叹号 祈使句 祈使句一般用来表示请求、命令、劝说、号召、警告等。 肯定句：_____ (+宾语)+其他. 否定句：_____+动词原形 (+宾语) +其他. 1. 上学日请穿校服。 Wear the school uniform on weekdays, please. Don’t watch TV before dinner. 2. 晚饭前不要看电视。 动词原形 Don’t Walk in the hallway. Don’t run! Look and learn Do型祈使句 Be polite. Don’t be sad! Look and learn 肯定句：____+表语+其他. 否定句：_____+be+表语 +其他. 1. 下次要细心。 Be careful next time. 2. 图书馆不要吵闹! Don’t be noisy in the library! =Be quiet in the library. Be Don’t Be型祈使句 Let’s go. Don’t let us go. Let’s obey the rules. Let’s not break the rules. Look and learn 肯定句：____+宾语+_____+其他. 否定句：____+let+宾语+动词原形+其他. 或 Let+宾语+___+动词原形+其他. 1. 咱们休息一下吧。 Let’s have a rest. 2. 不要让他去游泳。 Don’t let him go swimming. =Let him not go swimming. Let 动词原形 Don’t not Let型祈使句 No smoking ! 禁止抽烟! No cellphones in class. Look and learn No型祈使句 No+v-ing! / No+名词! 3. 禁止钓鱼! 2. 禁止停车! 1. 禁止拍照! No fishing! No parking! No photos! 肯定祈 ... ...
