Unit 1 Period 3情态动词(一) 导学案-2023-2024学年高一英语外研版（2019）必修第二册

Book2 Unit 1 Food for Thought Period 3情态动词(一) 考向分析：和建筑作品相关的阅读，完型，语法填空，写作 学习目标： 1. 掌握情态动词的用法； 2. 掌握情态动词在语境中的运用 学习重点：掌握情态动词在语境中的运用 易混易错知识：dare, need 实义动词和情态动词的区别 Section 1 自主学习 选择适当的情态动词填写下面教材中的句子并体会它们的语法特征： be able to/dare/have to/had better/need/must/can 1．I've enjoyed food from both countries ever since I ________________ hold a knife and fork—and chopsticks! 2．But there are still some dishes that Dad ________________ not try even after many years of marriage to my mother. 3．He ________________ have thought I was joking. 4．Dad ________________ cook a super “full English breakfast” of bacon, eggs, beans, sausages and toast with butter—Mum and I just ________________ find a way to get him into the kitchen! 5．Mum says we ________________ not eat too much roast food as it may make us suffer from heat inside our bodies... 6．“You ________________ not try it if you don't want to，” Mum said... Section 2 语法精讲 一、基本特征 1．情态动词有一定的词义，不能单独作谓语，需和实义动词或系动词一起作谓语。 She can speak English though she is six. 虽然她才6岁，但她会说英语。 2．情态动词一般无人称和数的变化，个别情态动词有现在时和过去时两种时态变化。 They must be in the classroom. 他们一定在教室里。 3．构成否定句时，not放在其后面。 The young man can't carry the big stone. 这个年轻人搬不动那块大石头。 4．情态动词后接动词原形。 Jogging can be harmful to the health. 慢跑可能会对身体健康有害。 二、be able to的用法 1．be able to后跟动词原形，表示具体的能力，与can的用法相近。 I am not able to answer your question. 我回答不了你的问题。 2．be able to与can/could的区别。 (1)be able to有更多的时态形式，can只有一般现在时和一般过去时。 Will you be able to come tomorrow? 你明天能来吗？ I'm sorry I haven't been able to answer your letter in time. 很抱歉我没能及时给你回信。 (2)was/were able to do sth.表示过去成功做成了某事，相当于succeeded in doing sth.。could仅表示客观上有某种能力，不说明实施该能力后的结果。 The maths problem was hard, but I was able to work it out. 这道数学题目虽难，但是我能把它做出来。 By the time she was eight, she could read Greek and Latin. 她八岁就会读希腊文和拉丁文了。 3．be able to可用在may/might，want之后。 I want her to be able to use a computer. 我希望她能使用电脑。 [即学即练]　选词填空(can/be able to) (1)If you have a good sleep, you will ________________ work out this problem. (2)When I was young, I _______