《Unit6 When was it invented?》SectionA(1a-1c)学案【学习目标】：1.学习一般过去时的被动语态和特殊疑问句2. 掌握一下句型“When was it invented?Who was it invented by?What is it used for?3.了解一些日生活中见物品的发明历史，如：电视、电脑、电话、汽车等，括他们被发明的时间、被什么人发明及其作用。在学习中， 懂得人类的科学发明创造了丰富的物质文明。：要求学生掌握三个句型 难点：三个句型的使用。Who was it invented by? 和What is it used for?中的介词学生容易丢掉，要注意多加练习。【课前准备】：I．比较下面两句话的区别： Bell invented telephone.______语态 The telephone was invented by Bell.______语态根据我们学习的一般现在时的被动语态的结构总结出一般过去时的被动语态。 【自主学习】：一般过去时态的被动语态构成：肯定句：主语+was/were+done+其他：Bell invented the telephone in 1876.----The telephone was invented.(例句1)否定式：主语+was/were+not+done+其他The telephone wasn’t invented.一般疑问句：Was/Were+主语+done+其他？_______________________________________?（把例句1改为）特出疑问句：特出疑问词+was/were+主语+done+其他？When was the telephone invented?小试牛刀：把下列句子改为被动语态1.I didn’t lend anybody my books._____________________________2.Did you send your brother gifts?_____________________________ 3.She bought her brother a dictionary._______________________________4The boy ate the biscuits in two minutes.__________________________5.When did people invent paper?_________________________ |
