Unit 4 Lesson 22 Go to Bed EarlyWhen do they get up?chickenchicken owlowl I get up very early every morning.(晚晚late)早早I get up very late.I sleep during the day.What about you?Show timeShow timeRead, choose and write the numbers.1) Do exercise every day.2) Go to bed late.3) Eat lots of candies.4) Drink a lot of water every day.5) Eat lots of ice-creams.6) Play lots of computer games.7)Get up early. 8) Eat food quickly(很快地)Healthy_ Not healthy_1,4,72,3,5,6,8Read and observe(观察观察)Open the door!Sit down! Please go out! Get up!Stand up!Dont smoke!Dont play football!Dont play your car! Dont eat!Dont run!summary (结论结论)祈使句祈使句 : 是表示是表示请求、命令、建议、禁请求、命令、建议、禁止止等句子。等句子。祈使句的结构如下：祈使句的结构如下： 动词原形动词原形 + + (Please) Dont + 动词原形动词原形 + (Please)肯定：肯定：否定否定：祈使句祈使句祈使句祈使句,无主语无主语,只用动词就可以只用动词就可以.表示请求或命令表示请求或命令,加上加上please表客表客气。气。如果变成否定句，如果变成否定句， Dont开头是规开头是规律。律。on the roadin classin the dining roomin class1. Be quiet.2. Take notes.3. Listen to the teacher carefully.4. Dont run 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.