Unit 6 Space and beyond Using language 课件-2022-2023学年高二英语外研版（2019）选择性必修第四册

新外研社高中英语选择性必修四Unit 6 Space and Beyond Using Language Grammar 2 a Millions watched that first lunar landing… aware… of the many things that could go wrong. b The world went into shock, most people having assumed that this space flight would be no more dangerous than travelling in an aeroplane. c I can remember that day so clearly, watching the take-off on TV at school, … d The sacrifice of the Challenger calls to us, reminding us that we must continue to reach for the stars, … Look at the sentences from the reading passage and answer the questions. 1 Which sentence talks about ability? 2 Which sentence talks about possibility? 3 Which sentence talks about necessity? 4 Which sentence talks about prediction? 5 What other modals do you know? What do they indicate? Now look for more sentences with modals in the reading passage. a Millions watched that first lunar landing… aware… of the many things that could go wrong. b The world went into shock, most people having assumed that this space flight would be no more dangerous than travelling in an aeroplane. c I can remember that day so clearly, watching the take-off on TV at school, … d The sacrifice of the Challenger calls to us, reminding us that we must continue to reach for the stars, … c a d b 情态动词 情态动词主要用来表明说话者的情感、态度和语气。情态动词不能单独作谓语，需要和实义动词原形一起构成谓语。 　情态动词基本语法功能 用法 请求/ 许可 可能/ 推测 义务/ 职责 意图/ 打算 意愿/ 愿意 意志/ 决心 才能/ 能力 can/could √ √         √ may/might √ √           shall/should √ √ √ √ √ √   will/would √ √   √ √ √   must   √ √         ought to   √ √         Summary 情态动词，即表示人的情感和态度的动词，它们本身有一定的词义，但是不能独立作谓语，只能跟动词原形一起构成谓语。 常见的情态动词主要有：can (could), may (might), must, need, shall (should), will (would), dare等。 Review: modals 情态动词 一、常见情态动词的用法：can和could 用法 例句 表示能力, 意为“能，会”； could表示过去的能力。 She can speak French fluently. 她能讲一口流利的法语。 can可用于肯定句中，表示客观或理论上的可能性。 An experienced teacher can make mistakes. 一位有经验的老师也会犯错。 表示请求或允许。在疑问句中，could可以代替can，语气更委婉，肯定回答时要用can，不用could。 — Can/Could I use your bike tomorro