浙江省杭州市塘栖中学高中英语必修三教学课件:Unit2Healthyeating情态动词.ppt

浙江省杭州市塘栖中学高中英语必修三教学课件:Unit2Healthyeating情态动词.ppt

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浙江省杭州市塘栖中学高中英语必修三教学课件:Unit2Healthyeating情态动词.ppt

Modal verbs ;dare, need 的用法;1.作情态动词用时,常用在否定句和疑问句中。;2.作实义动词用, 有人称、时态、和数的变化。;1.作情态动词时,主要用在否定句,疑问句及条件句中。 S + daren’t +V dare +S +V? I daren’t walk through the forest at night. Dare you walk through the forest at night? If you dare go out, I will kill you.;2.作实义动词用, 有人称、时态、和数的变化。常见用法是 dare to do, 但在否定句和疑问句中,dare to do 中的to可以省略。; 情态动词 + have done 这是历年高考热点之一, 表示现在对过去事物的推测, 有 “推测、责备、怀疑”等多种意义。;一、表示对过去事情的推测或估计;二、表示对过去所发生事情的遗憾或责备;4. needn’t have done “本不必做却做了” eg: Your home is not far from your school, so you needn’t have left in such a hurry.;1. The river is rising. It ________last night. must be raining   B. must rain C. might have rained D. must have rained 2. I didn’t hear the phone. I ___asleep. A. must be B. must have been C. should be D. should have been;3.---- We didnt see Tom at the meeting yesterday. ---- He ??????? it. A. mustnt have attended? B. cannot have attended ?C. neednt have attended? D. would not have attended;4. ---There were already five people in the car, but they managed to take me as well. ---It ____a comfortable journey. A. can’t be B. shouldn’t be C. mustn’t have been D. couldn’t have been;;7.Mr. White ___ at 8:30 for the meeting, but he didn’t show up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving;补充: 1.Let’s do sth, shall we? Let us do sth, will you? 2.Please do sth, will you? Please don’t do sth, will you? 3.had better do sth. would rather do sth.

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