【名校课件】人教版必修3：Uint1Festivalsgrammar.ppt

Learning about language;modal verb;情态动词有一定的意义，但没有人称和数的变化，不能独立使用，它和后面的动词构成谓语． 只作情态动词的　　can/could, may/might, 　　　　　　　 　 ought to， must 可情态可实义的　　need, dare/dared 可情态可助动词的　shall/should, will/would 相当于情态动词的　have to, used to, had better, would rather ;can and could Jim can speak English well. (ability) No one could finish the test last week. (ability) The teacher said that we could not leave early. (permission) The hunters are lost. They could starve. (possibility) Could you please show me the way to Beihai Park? (request);2.may and might May we see the awards for teams? ( permission, request) She might give you some new clothing. (possibility) 注意：1).表示许可时，用于第一人称，指我（们）被允许做某事；用于其他人称，则指说话者允许主语做某事。 Eg. We might go shopping until dark.(我们被允许) Mother said:”You might go shopping until dark.” （说话者允许主语做某事） 2).在用于请求许可时，may可与can/could 互换; 3.will and would The Spring Festival is the most fun. The whole family will come for dinner. ( promise; agreement) Often he would dress up like a rich man. (past habit) Would you like to join us for dinner? (request) 注意：would 与 used to 均可表示“过去惯常”，但是would 常与过去时间状语连用，意为总是，总要；used to 与现在时间相比，意为过去常常，暗示现在已经没有了。 Eg. When he was there, he would go to that coffee shop at the corner after work every day? He used to go to that coffee shop at the corner after work every day, but now he goes to play basketball.; 4.shall and should The harvest festival begins on Saturday. We shall be there with our friends. (promise, agreement) When going by plane,you should arrive at the airport at least one hour early. (advice) It’s nearly five o’clock. The taxi should be here soon. (prediction) 注意：1.shall 用于第一，三人称的疑问句中，表示说或者征求对方的意见，或向对方请示。 Shall we go shopping after school? 2.should have done 表示过去应???做而没有做 Should not have done 表示过去不用做而却做了; 5.must and