(课件网) Unit 2 Unit 2 第3课时 (Section A 4a-4d) 人教版·八年级下册 Stay Healthy Stay Healthy Review and say What’s the matter with Helen What advice does the doctor give Helen runny nose fever flu take some medicine and drink enough water rest at home wear a mask 4a Read the sentences. Underline the modal verbs for advice. What’s wrong I ate too much last night. Now my stomach aches. You shouldn’t eat so much next time. What’s the matter I have a really bad toothache. You should see the dentist and get an X-ray. You could eat some soft food for now. How did you hurt yourself I hurt myself when I fell off my bike. Be more careful next time. If we are not careful, we can easily hurt ourselves. Presentation What rules can you find out 情态动词should，could 后接动词原形， 无人称和数的变化。 should，could 不能单独作谓语，只能和 其他动词一起构成谓语。 否定形式是在其后加not；变为一般疑 问句时，将should，could 提到主语前。 情态动词should和could的用法 情态动词should和could的用法 should的用法 （1）用于委婉地提出建议或劝告，意为“应该” You should have three meals a day on time. 你应该按时吃一日三餐。 （2）用于表达义务或责任，意为“应该；应当” Each of us should study hard. 我们每个人都应该努力学习。 （3）表示推测，意为“应该会；可能” Doing calligraphy should be interesting. 练习书法应该会很有趣。 （4）用于责备、命令或要求，语气比较强烈。 You shouldn’t be scared of making mistakes. 你不应该害怕犯错。 （5）用于征求对方的意见，意为“应该； 应当”，常用于主语是第一人称的疑问句中。 What should we do now 我们现在应该做什么呢？ should的用法 could的用法 （1）表示建议。 You could eat out tonight. 今晚你可以上馆子吃饭。 （2）用于向对方委婉地提出请求或征求对方的许可。 Could you take out the rubbish 你能倒垃圾吗？（提出请求） Could I go on an outing with you 我可以和你一起出外游玩吗？（征求对方许可） could的用法 （3）could 为can 的过去式，表示能力。 He could ride a bike at the age of five. 他五岁时就会骑自行车。 （4）表示推测，意为“可能”。 The book could belong to Lily because she likes reading books. 那本书可能是莉莉的，因为她喜欢读书。 （连云港中考） Earthquakes can be very dangerous. We _____ learn to protect ourselves. 解析：might 意为“也许”；should 意为“应该”；could 意为“能；可以”；would 意为“愿意；将”。结合常识可知句意为“地震可能非常危险。我们应该学会保护自己。”情态动词should符合语境。故选B。 A. might B. should C. could D. would B （2025·白银） _____ you turn down the TV, please I’m trying to work. 解析：could 意为“能；可以”；must 意为“必须”；might 意为“也许”；should 意为“应该”。根据后一句句意“我正在努力工作。”可知，前一句是请求对方把电视音量调低，could 符合语境。故选A。 A. Could B. Must C. Might D. Should A 4a Read the sentences. Circle the reflexive pronouns. What’s wrong I ate too much last night. Now my stomach aches. You shouldn’t eat so much next time. What’s the matter I have a really bad toothache. You should see the dentist and get an X-ray. You could eat some soft ... ...
