人教九上U6第1课时导学教案.doc

自主学习方案1.学生自学生词，并记住单词拼写和拼读。2.预习课本，熟读重点短语和句子。（见学习目标）课堂导学方案Step 1 复习Ask students questions like:What is your chair made of?Where is it made?环节说明：简要复习上单元有关询问物品的原材料，产地等的教学内容。Step 2 情景导入Ask the students like below:T:What are there in your house? Do you have mobile phones, computers or cars?S1:_ T:What are they made of?S2: _ 环节说明：由向学生问其家里的电器、交通工具入手进入本单元内Step 3 完成教材1a-2d的任务1.1a学生看本节四种发明，判断它们被发明的先后顺序。2.1b听1b录音，把每项发明及其年份搭配起来。3.1c学生B遮住日期。学生A 问学生B 在1b图画中的物品是什么时候发明的。然后交换角色，再练习。并找几组学生展示他们的对话。4.2a听2a的录音，根据听到的顺序给下面的发明标上1-3的序号5.2b再听录音，完成表格。6.2c小组练习，学生就2b模仿本节对话练习对话，并找几组学生展示他们的对话。7.2d处理学生预习后的重难点，然后学生两人一组读对话，然后让2-3对学生表演对话。课堂资料包Step 1 重难点解析1.I think the TV was invented before the car.我认为电视比汽车发明得早。这是一个主从复合句，think后面跟了一个宾语从句。因为主句是一般现在时态，从句根据句意用了一般过去时态。（1）was invented意为“被发明”，此结构为一般过去时的被动语态。一般过去时的被动语态的结构为“was/were + 及物动词的过去分词”。如：These trees were planted last year.这些树是去年种的。The car was bought yesterday.这部车是昨天买的。（2）invent作动词，意为“发明，创造”，指发明以前没有的新东西。当物做主语时，常用被动语态。invention名词，意为“发明物”；inventor名词，意为“发明家，发明者”。如：Edison,a great inventor, invented many great inventions during his life.爱迪生，一个伟大的发明家，在他的一生中发明了许多重要的发明。Many inventions have been invented last year.去年有多项发明。2.What are they used for?它们是用来做什么的？ be used for sth./doing sth.意为“被用来做某事”，表示用途或目的，后接名词或动名词，相当于be used to do sth.。如：Clothes are used for keeping (=to keep) warm.衣服是用来保暖的。Wood can be used for building (=to build) houses.木材可以用于建房子。The stick is used to write on the blackboard.那根棒子被用来在黑板上写字。辨析：be used for，be used as 与be used by(1)be used for被用来（做）,for表示用途或目的，后接名词或动名词形式。如:Knives are used for cutting things.刀子是用来切东西的。Bikes are used for riding.自行车是用来骑的。(2)be used as 被用作,as是介词，意为“作为”，其后一般接名词，强调使用的工具或手段。如:The box is used as a table by my mother.这个箱子被妈妈当作桌子使用。(3)be used by 被使用,by是介词，意为“被，由”，后接动作的执行者。如:The tools are used by the workers in the factory.这家工厂的工人使用这些工具。The computers are mainly used by the students.那些电脑是学生用的。Step 2 小结训练(C)1.The telephone _by a wellknown scientist, Edison. A.inventedB.inventingC.was invented(A)2.English is used _a second language people in many _countries.A.as;by B.for;by C.as;for(B)3.What is the bottle used for?It is used _hold the water.A.for me to B.by me to C.to me for(B)4.He is famous for the_ he_ .A.inventions; inventionB.inventions; inventedC.inventor; invention环节说明：学生进一步巩固对invent,use 相关用法的理解和掌握。Step 3 问题探究1.The ancient Chinese_ (发明) tea that is now very popular all over the world.【解析】答案是 invented。这里应该用invent的主动语态，同时根据句意，应该用invent的过去式，故答案是invented。2.The old man is so lonely that he hopes to know about_ every day.A.special somethingB.special anything C.something specialD.anything special【解析】答案是C。句意为“老人很孤单，他希望每天都知道一些特殊的事。”3.The computer is a great invention it changed the world.A.so;that B.such;that C.so;how【解析】答案是B。a great invention是名词词组，所以用词组such that。4.What is the thing made _ you used _?It is important _us to clean the glass.A.by；for；byB.by；for；forC.for；to；for【解析】答案是B。句子意思为：你做的这个东西是用来干什么的？它对我们擦玻璃很重要。5.The man_ （mention) in the book lived in Q