module4 unit2 情态动词 (nx)
36页1、,语法讲义之 情态动词 modal verbs,1.-Is John coming by train? -He should, but he _ not. He likes driving his car. (2002高考题) A. must B. can C. need D. may 2.It has been announced that candidates(候选人) _ remain in their seats until all the papers have been collected. (2002上海高考题) A. can B.will C. may D. shall 3.-I heard they went skiing in the mountains last winter. (2002北京高考题) -It _ true because there was little snow there. A. may not be B. wont be C. couldnt be D. mustnt be,情态动词,表示推测,不表示推测,can could may mig
2、ht shall should must will would ought to,have to dare (darent) need (neednt) used to,I darent ask her for a rise. 我不敢请求她加薪. How did you dare to tell her that? I wonder whether he dare stand up in public. I dont know how she dares to wear that dress. Do you need any help? I wonder whether he need send it immediately. I need hardly tell you that the work is dangerous. The garden doesnt need watering at the moment. You neednt finish that work today.,可兼做行为动词的情态动词:need 、 dare,情态动词 (+动词原形),行为动词,.,need
3、,dare,1.无人称和数的变化;,2.尤其用于:,*否定句及疑问句中;,*在if/whether之后;,*或与hardly, never, no one, nobody连用;,3.常以neednt 和darent 的形式出现;,4.dare有其过去时dared.,多用于肯定句; (sb.) need to do dare to do (sth.) need to be done (sth.) need doing,判断正误:,How dare you say such a thing? How dare you to say such a thing?,He darent to speak English before such a crowd, did he? He darent speak English before such a crowd, dare he?,Nobody need to be afraid of catching the disease. Nobody need be afraid of catching the disease.,These dishes
4、 need be cleaned carefully. These dishes need to be cleaned carefully. These dishes need cleaning carefully.,注意对need问句的回答: -Need I finish the work today? -Yes, _. No, _. No, _.,you must,you neednt,you dont have to,neednt 对其它情态动词的回答: -Shall I tell John about it? -No, you _. -Must we do it now? -No, you _.,neednt (dont have to),neednt (dont have to),表示推测情态动词的重要用法.,1. You must be Mr Smith-I was told to expect you here. 2. He must have known what we wanted. 3. We may have read the same report. 4. He
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