小学情态动词的学习.doc

小学情态动词的学习情态动词有can (could), may (might), must, have to, shall (should, will (would),等。 情态动词不能单独使用，必须与其后的动词原形构成谓语一、 can, couldCan you lift this heavy box?（体力） Mary can speak three languages.（知识） Can you skate?（技能） 二may, might 表示请求和允许。might比 may语气更委婉，而不是过去式。表示“不可以，禁止”-Might/ May I smoke in this room? No, you mustnt. - May/Might I take this book out of the room?三、 must, have to 表示必须、必要。 You must come in time. 在回答引出的问句时，如果是否定的，不能用mustnt（禁止，不准），而用neednt, don四、 need 作情态动词用时, 常用于疑问句、否定句。1You neednt come so early. 2. - Need I finish the work today? - Yes, you must. / No, you neednt. 五、 shall, should 1) shall 用于第一人称，征求对方的意见。 What shall we do this evening? 2) shall 用于第二、三人称，表示说话人给对方的命令、警告、允诺或威胁。 1. You shall fail if you dont work hard.(警告) 2. He shall have the book when I finish it.(允诺) 3. He shall be punished.(威胁) 六、 will, would Will / Would you pass me the ball, please? will never do that again. They asked him if he would go abroad. 情态动词两要点;动词原形跟后面,说话语气较委婉,can表能力may许可,must责任或义务,否定回答neednt换;should应该,would愿,have to 被迫表客观. 注释:对must构成的一般疑问句作否定回答只能用neednt. 1. A can you play the piano? (you/play) B No, I cant, but I can play the violin.2. A _ Chinese? (you/speak) B Yes, I _, but I _ it well.3. A _? (your brother/drive) B Yes, he _, but he _ well.4. A _ his new job on Monday? (Hua An/start) B No, he _, but he _ on Tuesday.5. A _ chess? (your mother/play) B No, she _, but she _ poker (?K?J$6. A _ me ?100? (you/lend) B No, I _, but I _ you? 50.7. A _ the 8:30 bus? (Mr. Ye/catch) B No, he _, but he _ the 9:30 bus.改错1. She cant sings well.2. What dishes you can cook?3. Where do we can go today?May and may notMay I leave the room? Yes, you may.May wedo? No, you may not. (No, you maynt)根据情景和答句，用括号中的词提问。1 The television is very loud, and you and your sister are studying, (may)A May we turn down the television?B Yes, please turn it down.2 Its hot, and the air conditioner is off. (can)A _B Yes, you can turn it on.3 You and your friend see some lost tourists, (can)A _B Oh yes, please help us!4 You want some ice cream, but you have no money, (can)A _B Of course you can borrow $20.5 You see three of your friends playing tennis, (may)A _B Yes, please join us! We need a fourth player.6 You dont understand an English word, (may)A _B Yes, please use my dictionary.7 You want to order dimsum in a restaurant, (can)A _B Yes, of course you can have the menu.