高三体情态动词完整版.ppt

1. eg: You should keep your promise. You should be polite to your teachers. You shouldn’t waste any time. *表推测，通过日常经验及常识作出比较有把握的推断，表示“按理说应该” It’s 8 o’clock now, he should be here at any moment. 构成虚拟语气，在表达“要求，建议，命令，”时，从句中应用(should) +do 这些词有suggest, suggestion, advice, advise, insist, command,demand,order, ask, request等词 My suggestion is that you (should) go there at once -- I don’t care what people think. -- Well ,you _________. A. could B. would C. should D. might 2. ought to的用法 表义务，意为“应该”（因责任、道义、法律或原则等该做），口气比should稍重。 You ought to help him, he is in trouble. Such things ought not to be allowed, ought they? 3.shall （2010.江苏-25） --I haven’t got the reference book yet,but I’ll have a test on the subject next month. -- Don’t worry. You ______ have it by Friday. A. could B. shall C. must D. may (2012.辽宁-24) One of our rules is that every student ____ wear school uniform while at school. A. might B. could C. shall D. will 1). must 译为：“必须”， I must shut the door, or the dog will come in. Why must it snow on Sunday? Why must you always be finding fault with me? Johnny, you ______ play with the knife. You _____ hurt yourself. A won’t; can’t B mustn’t; may C shouldn’t; must D can’t; shouldn’t --May I take book out of the reading room? -- No, you______. You read it in here. A. mightn’t B. won’t C. needn’t D. mustn’t -- Hi, Tom . Any idea where Jane is? -- She ____ in the classroom . I saw her there just now. A. shall be B. should have been C. must be D. might have been (2012.重庆-25)-- ___ you interrupt now? Can’t you see I’m on the phone? --Sorry Sir, but it’s urgent. A. Can B. Should C. Must D. Would have to的用法 1. have to “不得不”,有时态（had to），人称和数（has to）的变化. 二者的否定意义不相同。 You mustn’t go. “禁止，不允许” You don’t have to go. “没有必要” （2012.湖南-23） You _______ buy a gift, but you can if you want to. A must B mustn’t C have to