仁爱八年级上情态动词讲解概要.ppt

情态动词 用 法 shall 征求对方意见 (第一, 三人称) 表示命令,警告, 威胁或允诺 (第二, 三人称) should 表示劝告,建议,命令或责任 “应该, 必须” 表示推测, “理应, 估计, 大概, 可望” should 还可表示“竟然” 5.shall 和should need 　1.need作实义动词，意为“需要”。如： need to do sth. eg. Do you need to stay at home?你要呆在家里吗？ 　2.need作情态动词，一般用于对must的否定回答。如： ---Must he leave now?　　他必须离开吗？ ---No, he neednt.　　　　不，他不必。 * 3.区分： 　 a.need作实义动词。 He needs to go. He doesnt need to go. Does he need to go? Yes, he does./No, he doesnt. 　　　 b.need作情态动词，一般不用于肯定句。 He neednt go. Need he go? Yes, he need./No, he neednt. 六、 will, would 1) 表示请求、建议等，would更委婉。 Will / Would you pass me the ball, please? 2) 表示意志、愿望和决心。 1. I will never do that again. 2. They asked him if he would go abroad. 1. We __________ smoke here, because the worker is carrying some petrol. 2. It is dangerous. You __________ leave the room immediately. 3. He ___________ go hiking with friends at weekends when young. 4. Write to me when you get home. ---I ___________. 5. --Need I hand in my exercise book at once? --Yes, you__________. 6. You have been working all day. You __________ be very tired. 7. It is a long time since we met last time. You __________ come and see us more often. 8. Why don’t you try on this dress? It _________ look nice on you. will, would, shall, should, must: mustn’t should would will must must should will 表示禁止,不许可 表示建议,命令 表示过去习惯 表示意愿 表示必须 表示肯定猜测 表示建议 表示将会,一定会 l练习 1—_____?I?water?the?trees?on?Tuesday?? ?—No,?you?needn’t.? A.?Can?B.?Must?C.?May?D.?Shall? 2.?—_____?I?turn?on?the?radio?? 　—You’d?better?not.?It?is?noisy?enough?in?this?room.? 　A.?Shall?　B.?Must?C.?Need?D.?Do? 3?Let’s?go?to?the?library?this?afternoon,?_____?? A.?shall?we　?B.?will?we?C.?can?we?D.?should?we? 4.?Everyone?_____?do?his?best?to?make?the?world clean.? A.?can?　　B.?may?　　C.?should?　　D.?had?to? 5.?_____?to?have?lunch?with?us?today?? A.?Do?you?like B.?Would?you?like C.?Will?you?like?　D.?Have?you?like? 6 —Will you lend me your book? —Yes, I _____. A. Will B. need