Unit 2 ? Keeping healthy?Topic 2 ? I must ask him to give up smoking. ? ? Section B? Designer : Chen XiaoyanРI am feeling sleepy now.?Can you guess what caused it?РMake sentences according to the pictures, using be good for/be bad for.РBrushing teeth twice a day is good for our health.?→You must brush teeth twice a day .РKeeping long fingernails is bad for our health.?→You must not keep long fingernails. ? & Don’t keep long fingernailsР情态动词:must必须/ must not不准、不许+ V原Р1, You must do homework now?2, You mustn’t smoke here.?3, Must I clean the house now?? Yes, you must.? No, you needn’t / don’t have to.
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