May 一、情态动词表推测的用法一、情态动词表推测的用法情态动词情态动词对现在和未来的推测对现在和未来的推测对过去的推测对过去的推测使用场合使用场合mustmay/mightcan/couldshould二、情态动词表示责备和意愿二、情态动词表示责备和意愿1、 本来应该做某事而实际未做本来应该做某事而实际未做2、 本不该做某事而实际做了。本不该做某事而实际做了。3、 本不必做某事本不必做某事4、 本能够做某事本能够做某事5、 本可以做某事本可以做某事6、 本想做某事，而实际没做。本想做某事，而实际没做。三、三、Exercise:1. Oh, Im not feeling well in the stomach. I so much fried chicken just now. A. shouldnt eat B. mustnt have eatenC. shouldnt have eatenD. mustnt eat 2. We didnt finish the work in time. You us since you were there. A. might help B. should help C. could have helped D. must have helped 3. Its very kind of you to do the washing-up, but you it. A. mustnt have doneB. wouldnt have doneC. mightnt have doneD. didnt have to do 4. That car nearly hit me; I . A. might be killed B. might have been killedC. may be killed D. may been killed 5. My wallet is nowhere to be found. I when I was on the bus. A. must drop it B. should have dropped it C. must have dropped it D. had dropped it 8. Did you criticize him for his carelessness?Yes, but I it. A. Id rather not do B. Id rather not have doneC. I shouldnt do D. Id better not do 9. He attended the meeting this morning. He has been staying at my home for the whole day. A. couldnt have B. mustnt have C. shouldnt haveD. neednt have 10. You go right now if you want, but I think, you , because we have enough time. A. may; needntB. must; needntC. should; mayD. may; must11. Listen, it must outside now. A. rain B. have rained C. raining D. be raining 12. Dont be late again next time.Yes, I . A. do B. would C. will D. cant 13. Did you leave your umbrella at the market?Yes, I . Which one of the following is WRONG?A. did B. may have C. might have D. might 14. You your parents, if they are wrong. A. mustnt obeyB. dont have to obeyC. wouldnt have obeyed D. cant have obeyed 15. I have come earlier, for you have needed some help. A. might; shouldB. should; mightC. must; shouldD. must; might附第三课时答案：附第三课时答案：情态动词表推测的用法情态动词表推测的用法情态动词情态动词对现在和未来的推测对现在和未来的推测对过去的推测对过去的推测使用场合使用场合mustmust doMust have done肯定句肯定句may/mightmay/might do May/might have 肯定句或否定句肯定句或否定句donecan/couldcan/could doCould have done否定；疑问句否定；疑问句shouldshould do 肯定句肯定句二、情态动词表示责备和意愿二、情态动词表示责备和意愿