Unit 6 Space and Beyond Grammar 课件-2023-2024学年高二英语外研版（2019）选择性必修第四册

Unit 6 Period 2 Grammar 课 堂 学 习 1 Look at the sentences from the reading passage and answer the questions. 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, ... Review: modals 1 Which sentence talks about ability? c 2 Which sentence talks about possibility? a 3 Which sentence talks about necessity? d 4 Which sentence talks about prediction? b 5 What other modals do you know? What do they indicate? Will, may, might, have to, shall, should, ought to, need, dare... Now look for more sentences with modals in the reading passage. 1. With the eyes of students across the nation upon her, she might have inspired an entirely new generation of astronauts and space scientists. 2. But there was never any doubt that manned flights would continue, and on 29 September 1988, the space shuttle programme resumed with the successful launch of Discovery. 3. The memory of those seven will live forever, written in the stars, inspiring us to join them in humanity's greatest journey of exploration and discovery. 4. The sacrifice of the Challenger calls to us, reminding us that we must continue to reach for the stars, no matter how distant they might seem. 【语法讲解】 情态动词 情态动词本身有一定的词义，表示语气的单词。但是不能独立作谓语，只能和动词原形一起构成谓语。情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想。 情态动词虽然数量不多，但用途广泛，主要包括下列单词和短语：can (could)、may (might)、must、have to、will (would)、need、ought to、dare (dared)、shall (should)。 1. can, could (1) 表示能力（体力、知识、技能）。 Can you skate? 你会溜冰吗? 此时可用be able to代替。can只有一般现在时和一般过去式；而be able to则有更多的时态。 I’ll not be able to come this afternoon. 今天下午我不能来了。 当表示“经过努力才得以做成功某事”时应用be able to，不能用can。 He was able to go to the party yesterday evening in spite