Unit 4 Section B Grammar and usage 课件-2022-2023学年高中英语牛津译林版（2020）必修第二册

Unit 4 Exploring literature 1 Section B Grammar and usage 2 PART 1 Leading in 3 Leading in 用适当的情态动词完成下列句子，体会他们的语法特征。 1. "What shall I read？"You have asked yourself this question more than once. 4 Leading in If you are not sure what to read, you get ideas from different sources , but it is also important to develop your own taste. 3. To start with, ask your friends, parents and teachers to recommend what books you read. 4. However, you also decide for yourself what kind of books to read. 答案：1.might; 2.can; 3.ought to/should; 4.must 5 PART 2 Grammar 6 情态动词 can 与could的用法 may 与might的用法 shall 与should/ought to的用法 will 与would的用法 must 与have to的用法 dare的用法 used to的用法 情态动词的几种形式 7 情态动词 情态动词表示说话人的语气和情态，如需要、可能、必须、应该等。常见的情态动词有：can，could，may，might，must，ought to，shall，should，will和would。另外，dare，need，have to和used to也具有情态动词的某些特性。 8 情态动词有以下特征： 1.在形式上，情态动词没有实义动词的各种变化，有的情态动词有过去式，其他情态动词如must，ought to等的过去式皆与一般式同形。 2.在意义上，大