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Revision for Modal Verbs Teacher: Hu YiLei School: Jinling Middle School Students: Class One, Senior Three
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Revision on Basis Uses of Common Modals Basis Uses of Common Modals MUST may need CAN SHOULD MIGHT COULD
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Complete the tips with “can, may, must, should,need” “can, may, must, should,need”
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Flu, Don’t worry Many people_____ catch a cold in the spring or the fall. There are some ways to prevent it: may
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1. Cover your nose and mouth with a tissue when you cough or sneeze. You _______ throw the tissue everywhere after you use it. And clean your hands afterward, noticing that viruses________ remain infectious( 传染 性 ) for hours. mustn’t may
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2. Wash your hands often with soap and warm water, especially after you cough or sneeze. Alcohol-based gel hand cleaners ________ inactivate( 减除 … 活性 ) viruses. can
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3. Avoid touching your eyes, nose or mouth. Germs ______spread this way and consider buying a mask in case you ________it in the future. may need
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4. At home, you ________ usually clean your room. keeping house air circulation_______ reduce the spread of virus. should can
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5. By eating food rich in vitamin C to improve your natural immunity( 免疫力 ). * if you _____ take vitamin C pills, please ensure tablets containing zinc ( 锌 ) to promote( 促进 )absorption of vitamin C. must
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6. Those who show physical discomfort, the symptom of high fever, cough _____ stay in the home, and at least 1 meter with others maintain, seek medical advice immediately. must
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Put these tips into practice and you_________ be infected with the terrible flu! may not
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‘ must be may be can’t be StructureMeaning 肯定是 … 可能是 … 不可能是 …
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It can’t be… It may be… It must be… It is a hat.
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It can’t be… It may be… It must be… It is a mobile phone.
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The person can’t be… The person may be… The person must be…
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‘ must be doing may be doing can’t be doing StructureMeaning 肯定(正在) … 可能(正在) … 不可能(正在) …
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What is she doing? 1 She can’t be doing… She may/must be doing…
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What is she doing? 2 She can’t be doing… She may/must be doing…
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What is she doing? 3 She can’t be doing… She may/must be doing…
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A cat may have walked on the paper. A small dog must have done this. An elephant can’t have made these marks.
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‘ must have done may have done can’t have done StructureMeaning (过去)肯定 … (过去)可能 … (过去)不可能 …
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‘ must be doing may be doing can’t be doing Meaning 肯定 … 可能 … 不可能 … 对 ? 表猜测 must have done may have done can’t have done Structure 对 ? 表猜测 对现在正在进行 的动作表猜测 对过去已经发生 的动作表猜测
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A:where’s Peter? B: I don’t know. He_______in the teachers’ office. A: He_______there, for I was there just now. C: I know where he is. He is ill and _____________ the doctor now. may be can’t be must be seeing
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A: What’s the matter with him? C: He had a sore throat and coughed with high fever. A: He _______________a bad cold. B: Really? He is not himself all these days. I’m afraid that he______________with H1N1. must have caught may be infected
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A: Oh, he ________________ travelling outside last weekend, or he wouldn’t have got ill. These days, everyone ____________(talk) about this virus. C: But we ___________ too nervous. It ________that bad, for we have done our best to prevent it from spreading. B: Hope so. How I wish he _________________ recover soon. shouldn’t have gone may be talking needn’t be can’t be could/would/might
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Homework Finish the exercise paper after you review what you have learned in the class.
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Revision for Modal Verbs
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