2012高考英语语法：情态动词(共33张PPT).pptVIP

情态动词 modal verbs 1.--Is John coming by train? --He should, but he ____ not. He likes driving his car. 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. A. can B.will C. may D. shall 3.--I heard they went skiing in the mountains last winter. --It ____ true because there was little snow there. A. may not be B. won’t be C. couldn’t be D. mustn’t be 　 情态动词 表示推测 不表示推测 can could may might shall should must will would ought to have to dare (daren’t) need (needn’t) used to I daren’t 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 don’t 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 doesn’t need watering at the moment. You needn’t finish that work today. 判断正误: How dare you say such a thing? How dare you to say such a thing? He daren’t to speak English before such a crowd, did he? He daren’t 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 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 needn’t you don’t have to needn’t 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 __________. needn’t (don’t have to) needn’t (don’t 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