Unit 2 Let's Celebrate! Using language Modal verbs 2 导学单-2024-2025学年高一英语外研版（2019）必修第二册

Unit 2 Let’s celebrate Using language---Modals (2) 导学单 1. 情态动词的定义: 情态动词_______独立作谓语，只能和_________一起构成谓语，具有助动词功能。 2. 情态动词表推测: 两种句式： 1. ________________________（表示对目前的动作或状态进行推测） 2. ________________________ （表示对已发生情况的推测） Grammar 1 must 表推测: 1. must表示推测时意为“一定，肯定”，推测的语气最强。 2. must表示推测时，只能用于肯定句，不用于否定句和疑问句。 注：如果表示“一定不，肯定不”，应用can’t，不能用mustn’t，mustn’t表示“禁止”。如询问某种可能性时，应用can。 3. must表示推测时，可以推测现在的情况、正在发生的情况和过去已经发生的情况。 Exercise: 1. You ______ be hungry after all that long walking. 2. - It might be John who is in the office. - No, it ______ be him. I saw him off at the airport half an hour ago. 3. He ___________________ (complete) his work; otherwise, he wouldn’t be enjoying himself by the seaside. Grammar 2 can/could 表推测: 1. can用于肯定句时，表示有时可能会出现的情况。 2. can表示对现在的动作或状态进行主观的猜测时通常只用于否定句和疑问句。 3. can’t/couldn’t have done 表示对过去事实推测，意为 “不可能做过……”。 Exercise: 1. Although you ______ find bargains in London occasionally, it’s generally not a cheap place to shop. 2. Thank you so much Sir! Without your help I ________________ (pass) the test. 3. Mr. Smith is on time for everything. How __________ it be that he was late for the important meeting? Grammar 3 may/might 表推测: 1. may/might表示把握不大的推测，用于肯定句和否定句，不能用于疑问句。might在语气上比may更委婉，表示的可能性更小。 2. may/might可以推测现在的情况、正在发生的情况、过去已经发生的情况以及将来的情况。 Exercise: 1. Sorry, I’m late. I ______________________ (turn) off the alarm clock and gone back to sleep again. 2. - Excuse me. Is this the right way to the Children’s Palace（少年宫）? - Sorry, I am not sure. But it ______be. Grammar 4 should / ought to表示推测: 1. 根据经验的推测，“应当、应该”. 2. 表示“竟然”，带有感情色彩。 课堂小练: 1、 填空题。 1. I don’t know where she is, she ___________ be in Wuhan. 2. The road is wet. It ________________(rain) last night. 3. - Linda has gone to work, but her bicycle is still here. - Oh, I guess she _____________________ (go) by bus. 4. Mike _______________ (find) his car key, for he came to work by bus this morning. 二、选择题。 1. --- Where is Mary? --- She ____ in the library. A. should be B. must be C. can be D. must have been 2.His room is dark. He must ____ to bed. A. go B. be going C. have gone D. have been gone 3.--- Will your father stay home tonight? --- I’m not sure, He ____to work. A. must go B. can go C. may go D. could go 4.There was plenty of time. She ____ worried or hurried. A. mustn’t have B. shouldn’t have C. must be D. needn’t have 5. The flower is dead. I ____ it more water. A. will give B. would have given C. must give D. should have given 学科网（北京）股份有限公司 $$