(
课件网) 仓颉之初作书盖依类象形故谓之文其形声相益即谓之字文者物象之本字者言孳乳而浸多也著于竹帛谓之仓颉之初作书盖依类象形故谓之文其形声相益即谓之字文者物象之本字者言孳乳而 Discovering Useful Structures 新人教必修三 Unit 5 The Value of Money 1. To learn about the different functions of modal verbs. 2. To be able to talk about future events in the past using “would do” and “was / were going to do”. Part I Modal verbs 情态动词 May we ask what you're doing in this country and what your plans are I can't say that I have any plans. You mustn't worry about that. Could you offer me work here Read the sentences below and pay attention to the usage of the red words: Lead-in Lead-in Tell me as much as you can about modal verbs that you remember. may / might must / have to shall / should will / would ought to need / dare can / could modal verbs Definition 情态动词 表示说话人对某一动作或状态的态度，表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词，用来给谓语动词增添情感，态度，语气等色彩。 注意：情态动词不能单独作谓语, 只能和动词原形一起构成谓语。 情态动词没有人称和数的变化。 Types 1.只作情态 动词的词 must can could may might 2.作情态动词也 可作实义动词 need dare 3.可作情态动词 也可作助动词 would will should shall 4.具有情态动词 的某些特征 ought to have/has/had to had better used to We use modal verbs to talk about A. ability or will（能力或意愿） B. prohibition（禁止） C. making suggestions（建议） D. certainty or inference（可能性或推断） E. politeness or euphemism（客气或委婉） F. obligations or expectations（义务或预期） Functions exercises 1. Oliver believes that with a million pound bank note a man could live a month in London. ( ) 2. Young man, would you step inside a moment, please？( ) 3. May we ask what you’re doing in this country and what your plans are ( ) 4. Well, I can’t say that I have any plans.( ) 5. Well, you mustn’t worry about that. ( ) 6. You mustn’t think we don’t care about you. ( ) 7. Well, it may seem lucky to you but not to me! ( ) 8. Now if you’ll excuse me, I ought to be on my way. ( ) 9. Oh, no, you’d better not open it. ( ) 能力或意愿 客气或委婉 客气或委婉 能力或意愿 禁止 禁止 可能性或推断 义务或预期 建议 The comparison and conclusion of modal verbs Usage ①can /could 表推测, 只能用在否定句或疑问句中，且此时could可能性比can小。 Eg：It’s so late. Can Tom be reading She couldn’t be telling lies. *对过去发生的行为进行推测时，常用can/could have done的否定或疑问形式。 Eg: The door was locked. She couldn’t have been at home. ②can /could 表许可时，could语气更委婉。 Eg：Can(Could)I come in Could(Can)I borrow your pen ③can /could 表能力，can表示现在的能力，could表示过去的能力。 Eg：I can read this chinese article. She could play the piano at the age of five. *can表示能力时，还可以用be able to代替。be able to后接动词原形，可用于大多数时态。 Eg：I will be able to speak French in another few months. 1. can/could can/could与be able to的区别 1. ... ...
