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1、SignsA sign tells us to do something or not to do something. For example:No litteringKeep quiet. Dont eat in the classroom.For example:Keep quietDont litter.SignsWe often use imperatives in signs.We use Dont to tell people not to do something. After Dont, we use the base form of the verb.Dont pick t
2、he flowers.Dont walk on the grass.Dont feed the ducks.SignsWe can also use No + ing in signs.No eatingNo litteringNo climbingWhat kind of signs can you find in the following places? Think of as many as you can and share your ideas with your classmates and teacher. In the parkIn the parkDont climb th
3、e trees.Dont walk on the grass.Dont pick the flowers.Dont feed the birds.In the classroomIn the classroomNo eating or drinkingDont draw on the desk. No runningKeep quiet.In the toiletIn the toiletFlush after use.Wash your hands after use.Dont waste the water.MustWe use must to say that it is necessa
4、ry to do something.must = have to / need to For example:Keep quiet. You must keep quiet.Dont run in the classroom. You must not run in the classroom.No littering You must not litter.We mustnt climb the trees in the park.In the parkDont climb the trees.Example:We _in the park.In the parkDont ride a b
5、icycle.Now you try. mustnt ride a bicycleWe _ .Outside the classroomQ-upmust queue up outside the classroomWe _ .In the classroomDont play football.mustnt play football in the classroomWe _ .No spittingmustnt spit對(duì)本課所學(xué)內(nèi)容進(jìn)行梳理和匯總，自己思考和整理本課的所學(xué)與所得。Make some rules in groups. (in classroom, at school, at the library, at park)THE END
外研版英語四下一起Module1 Unit2PPT課件2
