1、 1. Jim _ sing very well. 2. Hello, _ I speak to Jim? 3. He listened, but he _ hear nothing. 4. We are students. We _ work hard. 5. _ I come in? 6. You _ talk in class. can can? may? must? could? might ? can/could/may could must May mustnt ?There must be some mistakes. ?She cant be English. ?Ask Jim
2、. He may know the answer. must cant may mustbe certain may/might/could be not certain; be possible cant be impossible Whats this? It must be. Can it be. What kind of ball? It may/might could be. BALL Whats this? . might/may/could . Young? Or Old? Who can it be? It may/might/ could be. Whats in the b
3、ox? There may/ might/ could be . Chocolate What do they do? No.1No.2No.3No.4 He must be a . Policeman Postman Waiter Boss Where are they from? No.1No.2No.3No.4 He/She must be from/come from He/She may/might be from/come from What can it be? -Can it be a. -No, it cant be a I think it (Yes, maybe.) Wh
4、at are they going to do? No.1No.2No.3No.4 He/She/They may/might/could. can和 could 1表示“能力”I can swim , but my sister cant. 2表示“许可”、“请求” Can I go with you ? (请求) Father said I could go to cinema. (表示过去的许可) You cannot smoke in the meeting room. (cannot 表示“禁止”) Could I use your phone?Yes, of course you
5、can.肯定回答，不能用could ，一般是Yes, please. Thanks. ? 3“猜测”（主要用于否定句 和疑问句）： ? He cant be at home. (否定 句) ? Can the news be true ? (疑 问句) may 和might 1表示“许可” You may take a walk. Students may not make noise in the library. (may not 表示不许可或 禁止) May I come in? 否定回答No, you mustnt. /cannot. 也可以 may not 肯定回答sure, cer
6、tainly, of course Might I trouble you for a light? “You may indeed.“ ? 2.表示“事实上的可能性“ ? It may rain tomorrow. (表 示可能会发生) 1.表示“必须”、“务必”： We must obey orders. Must I pay now ? 肯定回答 Yes, you must 否定回答 No, you neednt 或 No, you dont have to 2.表示“预测” (必定，必会) 一般用于肯 定 句。可用于否定一般疑问句。 There must be a mistake. M
7、ustnt there be another reason for his behavior? must must may/might/could cant/couldnt do be doing have done What are they doing? must. What is Ms Wang doing now? The ground is wet. What happened last night? It must have rained last night. How did Tom reach the cake? He must have used a chair. What is the house for? Where are they? Homework: Finish Ex in your exercise book. Finish Ex. in your workbook.
