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______________ eat the grass. can’t/ mustn’t/shouldn’t They _______________________ eat too much energygiving food. shouldn’t/ oughtn’t to “Hi, guy, don’t you know I’m a born (天生的) player. I ______ move quickly and avoid your shoes! can Philips ______________________________ smoke marijuana(大麻) . shouldn’t/ oughtn’t to/ can’t Summing up Function(功能) modal verbs(情態(tài)動詞) Possibility(可能性) can/could/ may/might…. Ability (能力) … Permission(許可) … Guessing(猜測) can/could/may/might…. Request(征求意見) … Advice(建議) Prediction(預(yù)測) will/would… Necessity(必要性) Promise(允諾) ought to/ should/will/would can/ could will/would/can/could/may/might must/should/ought to… have to, must can/ could/may/might Go to see a doctor Today following Li Hua’s advice, I went to see a doctor….. D: What’s the matter? X: I …… feel frustrated, be amazed at, energygiving food, take exercise, a balanced diet, lose weight, be/keep fit Health is wealth My advice to teen