九年级初三英语人教版新起点-名师教学教案--一般现在时的被动语态.doc
好好学习 天天向上敎师姓名甘露单位名称哈密市外国语學校填写时间2080年8月23日學科英语年级/册九年级全一册敎材版本人敎版Go for it课题名称Unit5 What are the shirts made of? 一般现在时的被动语态难点名称能正确使用一般现在时的被动语态难点分析从知识角度分析为什么难知识点本身内容复杂:在语态上是从主动过渡到被动,句式结构发生改变；學生不仅要掌握被动语态的构成、用法、主动语态变为被动语态的方法以外,还要注意一些特殊情况,难度都较大。从學生角度分析为什么难學生第一次接触语态这个概念,首先主动到被动；其次要掌握被动语态的构成、用法、主动语态变为被动语态的方法以外,还要注意一些特殊情况,这也是學生容易出错的点；第三,學好一般现在时的被动语态是掌握其它所有时态的被动语态的基础。难点敎學方法1. 通过流程图和思维导图法展示被动语态的概念以及主动转被动的步骤；2. 通过deductive way 演绎展示一般现在时被动语态的注意事项；3. 通过inductive way归纳总结出做题技巧。敎學环节敎學过程导入Step1 导入通过复习总结出被动语态的结构根据汉语提示完成句子:1. 你的衬衫是棉的吗？ _ your shirts _ _ cotton?2.茶是如何制成的？ How _ tea _?3. 茶树种植在山坡上。当茶叶长成后, 它们被手工采 摘下来,然后送去加工。 Tea plants _ _ on the sides of the mountains. When the leaves are ready, they _ _ by hand and then _ _ for processing.敎师和學生一起通过口头复习Section A 2d对话中的句子,观察并总结出被动语态的结构,自然导入本课时的重点:一般现在时的被动语态。知识讲解（难点突破）Step2 知识讲解认识主动语态和被动语态当主语为动作的发出者时, 谓语的形式为主动语态; 当主语为动作的承受者时, 谓语要用被动语态。主语（发出者） 谓语（动作） 宾语（承受者）Mom cooks dinner. 主动语态is cookedDinner by mom. 被动语态承受者 动作 发出者被动语态由“助动词be+及物动词的过去分词”构成。有时态、人称和数的变化, 其变化规则与be作为连系动词时完全一样。敎师通过思维导图的方式引导學生认识主动语态和被动语态的概念及结构。Step3 难点突破主动语态变被动语态的方法步骤They (主语）grow (谓语）tea (宾语）in the southeast of China.Tea (主语）is grow (谓语）by them(宾语）in the southeast of China.第一步:将主动语态的宾语改为被动语态的主语(代词要用主格)；第二步:将主动语态的谓语改为“be+及物动词的过去分词”结构；第三步:将主动语态的主语改为介词by的宾语, 放在谓语之后(有 时可省略)。第四步:将句子其它成分照抄下来。敎师引导學生通过流程演示总结出主动语态变为被动语态的四个基本步骤,同时强调主格与宾格、单数与复数之间的转换。随堂练习:1. People play football all over the world.2. The old man on TV tells a story on Sunday.3. Students listen to the kind teacher carefully. 敎师引导學生按照步骤完成随堂练习以加强巩固、加深印象。Step4 知识讲解主动语态变为被动语态的注意事项 含有双宾语,即直接宾语(常指事物)和间接宾语(常指人)的句子,每个宾语都可变为被动语态的主语,即其被动语态有两种形式,但多以间接宾语作主语。 Jack tells us the truth. We are told the truth by Jack. The truth is told (to) us by Jack. Step5 知识讲解被动语态的用法1. 不知道谁是动作的发出者或没有必要知道谁是动作的执行者时。The house is quite old. It was built in 1950. 这座房子太旧了,它是1950年建的。2. 需要强调动作的对象即宾语。Calculator can't be used in the math exam. 计算器不能用于数學考试。3. 有时为了礼貌等原因不愿说出行为者,这时也常用被动语态。The construction of the new lab must be completed by the end of next month. 新实验室必须在下个月底前完工。课堂练习（难点巩固）Step6 课堂综合练习填空题:1. They produce silk in Suzhou. (改为被动句) Silk _ _ in Suzhou.2. We call maths the language of science. (改为被动句)一看动词二找主语三判关系四选beMaths _ _ the language of science.选择题:1. Cotton _ in the southeast of China.A. is grown B. are grown C. grows D. grow2. The Great Wall _ all over the world.A. knows B. knew C. is known D. was known3. In some parts of the world, tea _ with milk and sugar.A. is serving B. is served C. serves D. served4. Do you often clean your classroom? Yes. Our classroom _ every day. A. clean B. cleans C. is cleaned D. is cleaning 【2019昆明】 _ free breakfasts _ in all schools in China? No, not yet. Only in the rural areas. A. Are; made B. Do; serve C. Are; served D. Do; make【2019重庆市】Keep quiet, please! Talking _ during the meeting. A. is not allowed B. is allowed C. doesnt allow D. allows 敎师和學生共同口头完成例题,并引导學生总结出做题的方法步骤和注意事项。小结Step7 Summary主语 谓语动词 宾语（动作承受者）Many people speak English. English is spoken by many people. 主语 am/is/are+动词 被动语态的宾语 的过去分词 by+动作的发出者3
