Unit8 It must belong to Carla SectionA Grammar Focus-4c 课件 2023-2024学年人教版英语九年级全册

人教新目标Go For It九年级英语全册 Unit8 It must belong to Carla SectionA Grammar Focus-4c 基本特征 1. 有词义，但不能单独作谓语，须和动词原形一起构成谓语 2. 一般无人称和数的变化，have to有人称和时态的变化 3. 在情态动词后+not变否定，把情态动词提到主语前面变一般疑问句 They can walk to school.他们可以走路去上学。 否定：They can not walk to school. 一般疑问：Can they walk to school? 4. 含情态动词的被动语态: 主+情态动词+be+done I can speak English . English can be spoken by me . Grammar focus - 4c Unit 8 It must belong to Carla. 3 方框里的词都是______动词， 其作用是_______________ 思考表推测的情态动词的区别： 语法探究之一 观察 思考 回答 情态 表示推测 The important thing in life is to have a great aim, and the determination to attain it Grammar Focus 情态动词表推测 表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词就是情态动词。情态动词可以表示说话人的语气或某种情态，也可以表示推测。英语中表示肯定推测的情态动词主要有 must, can, could, may, might，否定推测can’t 。 1. 表肯定推测时，语气从弱到强：might → may → could → can → must。 2. 表否定推测时，can’t/couldn’t “不可能”，语气较强；may not/might not “可能不”，语气较弱。 注意： mustn’t “禁止, 千万不要”，不表推测。如： John, you mustn’t play football on the street. We should keep quiet in the library. We mustn’t speak loudly. The important thing in life is to have a great aim, and the determination to attain it 3. must 一定，准是。只用于肯定句中。如： The light is off. He must be sleeping. 4. can多用否定句或疑问句中。could可用于各种句式。如： The door is locked. He can’t be at home. There could be life on some of the planets. 5. may/might用于肯定句和否定句中。如： They may not know his address. I’m not sure about that. She told me that she might go to Hawaii this winter. The important thing in life is to have a great aim, and the determination to attain it 1. —Could you play the piano at the age of five? —No, I ______. I started at six. A. can’t B. shouldn’t C. needn’t D. couldn’t 2.—May I park my car here? —No, you_______. Can’t you see the sign ? A. mustn't B. wouldn't C. needn't D. couldn't D A The important thing in life is to have a great aim, and the determination to attain it 3. —What will the weather be like tomorrow? —It ______ be rainy, cloudy or sunny. I am not sure. A. must B. may C. can’t D. should B 4. Li