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课件网) Unit 2 Stay Healthy Section A (4a-4d) 让教学更有效 Learning Objectives To understand and master the basic meanings, structures and usages of the modal verbs “should” and “could”, as well as the formation, basic usages and syntactic functions of reflexive pronouns. Identify and comprehend the usage contexts of modal verbs and reflexive pronouns in grammatical example sentences.. To grasp the core meanings, structures and usages of modal verbs and reflexive pronouns. Recognize and understand their usage contexts in grammatical examples. To use should/could with real-life examples to give proper advice on different health problems; consciously use reflexive pronouns in writing and speaking to make expressions more accurate and logical. Watch and Read Read and Think What did they say “ You shouldn’t eat so much next time.” “ You should see the dentist and get an X-ray. You could eat some soft food for now. ” 情态动词 should/could What are they used for Look and Learn 情态动词should和could的用法 1. 情态动词 should, could 后接_____，无_____的变化。 2. should, could_____单独作谓语，只能和其他动词一起构成谓语。 3. 否定形式是在其后加_____；变为一般疑问句时，将should, could 放 _____。 动词原形 人称和数 不能 not 句首 Look and Learn should 的用法 （1）用于委婉地提出建议或劝告，意为“应该”。 eg: You should see the dentist and get an X-ray. 你应该去看牙医，并且拍个 X 光片。 （2）用于表达义务或责任，意为“应该；应当”。 eg: We should take good care of our teeth. 我们应该好好爱护我们的牙齿。 （3）表示推测，意为“应该会；可能”。 eg: Brushing your teeth with this should be interesting. 用这个刷牙应该会很有趣。 （4）用于责备、命令或要求，语气比较强烈。 eg: You shouldn’t eat so much sugar. 你不应该吃这么多糖。 Look and Learn could 的用法 （1）表示建议，意为“可以”。 eg: You could eat some soft food for now. 你暂时可以吃点软食。 （2）用于向对方委婉地提出请求或征求对方的许可，意为“...能...吗？”。 eg: Could you give me some porridge 你能给我一些粥吗？（提出请求） （3）表示推测，意为“可能”。 （4）could 为can 的过去式，意为“能，会”。 eg: This bowl could be Nancy’s. 这个碗可能是Nancy的。 eg: Could I eat some porridge 我能吃一些粥吗？（征求许可） eg: He could eat porridge by himself at the age of one. 他一岁就能自己吃粥了。 Look and Learn 辨析should与could （1）当你认为“必须”时用should。 eg: You should go to bed early. 你应该早点睡觉。（身体需要） （2）当你认为“可以做，但可选其它”时用could。 eg: You could read a book or watch a movie. 你可以看书或看电影。（两种选择都可以） 1. You _____ brush your teeth before going to bed. It’s good for your teeth health. A. could B. should C. can 选择正确的选项。 2. —I have a headache. What should I do —You _____ have a good rest and drink more warm water. A. could B. should C. can 选词填空（should/could/shouldn’t/couldn’t）每词可重复。 Look and Practice 1. You _____ eat more vegetables. They are good for your body. 2. My brother _____ play baske ... ...
