Step1问候，进入课题，通过幻灯片二，师生问答，复习SectionA中“should/shouldn’t/hadbetter/hadbetternot”的用法；
T：Asweknow,healthisveryimportant,doyouthinkso(Ss:Yes.)Butsometimeswemayfeelterrible.Wemayhaveaheadacheorgettheflu.Sowhenwegettheflu,whatshouldwedo(出示幻灯片1，Whatshouldwedotopreventtheflu)
S1:Weshoulddoexercisetobuildusup./…
S2:Weshouldkeepourroomscleanandmaketheairfreshallthetime./…
S3:Weshouldwashouthandsandchangeourclothesoften./…
Step2、展示幻灯片三、四和五，让生逐一根据六幅插图，联想动词短语，进一步复习“must/mustn’t/hadbetter/hadbetternot”的用法，注意学法指导。如：
T:Let’slookatpicture4,weshouldn’tthrowlitteraround,andwemustthrowitintothedustbin.Butinthepicturehere,howcanwekeephealthy(师生一同仔细观察图片)
S4:Wemustn’t/shouldn’tdrinksourmilk.（师要适时追问”sour”means）
Ss:“Bad.”（师进一步输入）
T:We’dbetternothavebadfood,orwemayfeelveryterrible,wemayhaveastomachache.Soweshouldsaynotothebadfood.
Ss:…
T﹠Ss:一同总结情态动词的基本用法。(师板书should/shouldn’t/must/mustn’t/hadbetter/hadbetternot+动词原形，生做笔记！)
设计意图：用简洁的语言和直观的图片进行师生问答，让他们用心观察，积极回答问题，为有效复习做好支撑。
Stage2Pre-listening
通过课文P45中1a右边的两幅图片，初步猜测文本信息。
T:Pleaseopenyourbook,turntopage45,lookatthepicturein1a.Whoarethey
Ss:TheyareKangkangandMissHu.
T:Yeah,therearealsosomequestionsontheblackboard.Pleasescanthem,listento1acarefully,thenfinishthem,clear