Unit 4 Section Ⅲ Grammar and usage（课件PPT）-【新课程学案】新教材2023-2024学年高中英语必修第二册（译林版2020）

Section Ⅲ　　Grammar and usage NO.1 NO.2 语法专区/落实“形式”—意义 —使用“三维动态语法观” 新知学习/核心语言点集中释解 目 录 　(语法项目——情态动词) 初识语法——在美文运用中体悟　 Mary couldn't/wasn't able to see clearly because of her injured eyes.① Her mother told her that she should go to see a doctor as soon as possible.② Her mother warned，“You may/might have poor eyesight if you don't take it seriously.”③ On arriving at the clinic, a doctor asked her，“Shall I examine you one hour later？”④ Mary replied that she would not be free then because she had to attend an important lecture.⑤ The doctor said，“Would you please come to examine tomorrow？”⑥ Mary replies that she must have time then.⑦ She told her teacher，“My eyes hurt and I need have an eye examination.”⑧ As expected, the teacher said，“Yes, of course you can.”⑨ 句①含有情态动词could/be able to，表示“能力”； 句②含有情态动词should，表示“责任与义务”； 句③含有情态动词may/might，表示“可能”； 句④含有情态动词shall，表示“征求意见”； 句⑤含有情态动词have to，表示“不得不”； 句⑥含有情态动词would，表示“请求”； 句⑦含有情态动词must，表示“肯定的推测”； 句⑧含有情态动词need，表示“需要”； 句⑨含有情态动词can，表示“许可”。 慧学语法——在归纳演绎中学通　 一、概念　 情态动词本身有一定的词义，通常与动词原形一起构成谓语，表示说话人的看法或主观设想。 二、句法功能　 (一)can/could的用法 [先感知] ①If you are not sure what to read, you can get ideas from different sources ... ②Can I keep the book for more than two weeks? ③You could also read book reviews in newspapers, in magazines or online. ④Nick can read more in an afternoon than I can in a week! ⑤The story can't/couldn't be true. [会发现] (1)句 中can/could 用于肯定句，表示理论或习惯上的可能性。 (2)句②中can表示 ，口语中常用could 代替can。(could表示现在，用以委婉地提出请求、建议等，但回答时一般用can) (3)句④中can表示 。 (4)句⑤中can/could用于否定句表示 。 ①③ 请求或许可 能力 推测 [明规则] 1．表示能力：can 表示一般性的能力或即将能做某事，could 表示过去的能力； 2．表示推测：can/could 一般用于否定句或疑问句中； 3．could 表示有礼貌地请求或建议，但回答时一般用 can； 4．can 可用于肯定句中，表示一种客观的可能性。　 [名师点津]　can 常表示自身具有的能力(ability)，意思相当于be able to，但在一般过去时中，was/were able to 通常表示过去成功地做了某事，could 仅表示客观上有某种能力。 [对点练]　(选词填空：can/could/be able to) ①(2023·全国甲卷)Carson proves that a simple literary form that has been passed down through the ages still