2023年广西中考英语专题--情态动词.pptxVIP

2023年广西中考英语专题情态动词1.can与cant2.could与couldnt3.must与mustnt4.should/ought to与shouldnt5.may与might6.need与needn’t7.will与would8.shall与had better9.have to与don’t have to1. can与cantcan表示能力，意为“能，会”，可与be able to互换 Can you speak English？表示请求、允许，意为“可以”Can you tell us about the fire？cant表示能力，意为“不能，不会” I cant paint or drive a car.表示否定推测，语气强烈。意为“一定不，不可能”，可能性几乎为零—Whose cap is this? Is it Cindys?—It cant be hers. She didnt come to the party.2. could与couldntcouldcan的过去式，意为“能，会”，表示过去的能力You could help to clean up the city parks. 在疑问句中表示委婉的请求Could you take a message for me？表推测，意为“有可能，也许”(20%～80%的可能性)，语气缓和，较委婉The French bookcouldbe Alices. She studies French.couldntcould的否定式，意为“不能，不会”Words could not express her feelings at that moment.3. must与mustntmust表示主观看法，意为“必须，一定”We must be on time. 表示非常有把握的肯定推测，100%的可能性，意为“一定，肯定”They must be very tired after a long walk. mustntmust的否定式，意为“一定不要，禁止”We mustnt throw rubbish into the river. 4. should/ought to与shouldntshould/ought to意为“应该”，表示要求和命令，也可以表示劝告或建议We should work harder to protect our world.表示征求意见，常用于疑问句When should we have a meeting？shouldnt意为“不应该”You shouldnt start eating first if there are older people at the table.5. may与mightmay表示请求、许可，意为“可以”May I ask you a question? 意为“有可能，也许”，用于肯定句，表示把握不大的推测His answer may be right. 表示祝福和愿望May you succeed！mightmay的过去式He was really worried that his coach might kick him off the team. 表示请求、许可，语气比may更委婉Might I sit here?表推测，意为“有可能，也许”，可能性低于may，语气缓和，较委婉She might have gone to the library. She likes reading in the afternoon. 6. need与needntneed意为“需要”，主要用于否定句和疑问句中Need I leave now？needntneed的否定形式，意为“不需要，没必要”You neednt get up so early.7. will 与would will表示询问、请求，用于疑问句中，常用于第二人称Will you pass me the book? would表示自愿做或主动提出做什么，如意志、愿望或决心等Jane said she would not go with Tom, for she didnt have time.8. shall与had bettershall表示请求或征求对方意见，常用于主语是第一人称的疑问句。对“Shall I...？”作肯定回答时，用“Yes, please.”；否定回答用“No, thank you.”Shall we get each of them a card and a gift to say thank you？had better意为“最好”，没有人称和数的变化，后接动词原形You had better have breakfast eve