精心整理5BM3U1 SignsPeriod 2 Look at th signs精心整理Look at the sign!You cant/mustnt _.We can see the sign in/at _.the river/lakeswim hereA:B:What does this sign mean?A:精心整理Look at the sign!You cant/mustnt _.We can see the sign in/at _.A:B:What does this sign mean?A:精心整理It means we mustnt swim here.What does this sign mean?精心整理1.You cant smoke here.2.You cant swim here.3.Dont litter!4.Dont walk on the grass.5.Dont walk your dog.()()()()()ABCDF12345No smoking!No swimming!No litter!No _!No _!精心整理Look at
