1、Unit 3 We should obey the rules.,Lesson 17,Lets chant,Warm-up,Lead-in,You should/You shouldnt,Review,Lead-in,What do you think of them?,Do they obey the rules?,Presentation,Look at the picture and discuss.,Presentation,Just talk,Presentation,must,mustnt,V.原形,must not,Presentation,must,mustnt,should,
2、shouldnt,应该,不应该,必须,禁止,Just talk,You mustnt _ the street now.,Practice,cross,Practice,Just talk,You mustnt _ on the ground.,spit,Just talk,Practice,You mustnt _ the flowers.,You must _ the grass.,keep off,pick,Just talk,Practice,You must _ young children.,You mustnt _.,litter,take good care of,Practi
3、ce,You must keep off the grass.,Practice,You _ cross the street now. You _ wait for the green light.,You _ pick the flowers.,You _ spit on the ground.,You _ litter.,You _ keep off the grass.,You _ take good care of young children.,must,mustnt,must,mustnt,mustnt,mustnt,mustnt,must,must,Summary,如何表达必须和禁止做某事？,You must/mustnt,例如： You must keep off the grass. You mustnt pick the flowers.,
