情态动词培训课件.ppt

Grammar: Modal Verbs 情态动词表示说话人的“情感，态度”，所以把握“词义和语境”很重要。 常见的情态动词有： can, could, may, might, must, shall, should, ought to, will, would, need, dare 有关这些情态动词的基本用法，请同学们参看“创新导学案”。 1. You ______ tell him about the news. I’ve told him already. 2. Experienced teachers ___ make mistakes. needn’t can 3. ______ you make so much noise, Mary? We’re studying. 4. I’m surprised that you ________ speak to your parents in that way. 5. Don’t worry! I’ve just sent an ambulance to you. They ________ be there any second. 一. 读句子，总结归纳will, would的用法： 1. Will/Would you please open the door? 2. Some birds will fly away to the south when the weather turns cold. 3. We would work in the countryside when we were young. Must should should 4. I will make it work even if I stay up the whole night. 5. He said he would come to our help. 归纳总结： (1) _________________________________ . (2) _________________________________ . (3) _________________________________ . 二. 读句子，观察总结shall 的用法： 1. Shall I carry your luggage? 2. Shall he come to see you? 在疑问句中用于第二人称表示委婉的请求 will/would分别表现在和过去习惯性动作 will/would分别表现在和过去的“意愿，意志” 3. You shall have a nice present for your birthday. 4. You shall fall behind in your study if you keep playing. 5. When he comes in, nobody shall say a word. 6. The sign reads, “No person shall smoke in this area.” 7. The school rules state that no child shall be allowed out unless accompanied by an adult. 归纳总结： 1. __________________________________ . 2. __________________________________ _______________ . 3. __________________________________ _______________ . 三. 情态动词+ have done 1. should/ ought to have done 2. shouldn’t/ oughtn’t to have done 3. needn’t have done 疑问句中用于1,3人称表委婉的请求. 例:1,2句 用于2, 3人称,表“警告,命令,强制,威胁， 允诺”，例如：3，4，5句。 法律,文件,规定,制度中应尽的义务“应该， 得，必须”。例如：6，7句。 4. could have done 5. can’t/couldn’t have done *1表示本该做却未做，表遗憾或责备。 *2表示本不该做却做了，表遗憾或责备。 *3表示本不必做却做了。 *4表示本能够却未能。 *5表示推测，不可能已经做了某事。 1. I needn’t have gone to school yesterday morning, for it was Sunday. 2. Most