宁夏银川市第四中学九年级英语全册 Unit 9 When was it invented.Section A 3a-4学案（无答案） 人教新目标版

1、unit 9 when was it invented.section a 3a-4学案一教学目标1知识目标： words and phrases talk about the history of inventions2能力目标：能在具体语境中正确运用被动语态。3情感目标：培养爱国主义精神。二学习重点：重点词汇用法及一般过去时被动语态用法。学习难点：被动语态用法。二、资料准备：课本p69 sectiona3a 4 三、学习过程：step one: 自主学习1发明；创造 _ 2 计算器 _ 3用勺舀；勺子； _ 4可调整的 _5.后跟_ 6.电池_7.操作，作业_8. 电池供电的_9.拖鞋_1

2、0.加热，使变热_11. 电灯泡，电灯_12. 微波_ 二、预习自测：这些短语在课本中就能找到。1用来做 2.电灯泡 3. 微波炉_4.被发明 5.有舒适鞋跟的鞋子 6.每天 7. 整天 （听力材料）1. 现代的发明_2. 上历史课_3. 我的一些朋友_ 4. 在过去_5. 私人电脑_6 .上上下下_7. 的式样_step two：合作学习 1. the telephone was invented by bell.（划线提问）_ _the telephone _by. 2. the watch was made in japan. （变否定句） the watch _ _ _japan. 3

3、. we saw a bird in the tree. (变被动语态) a bird _ _in the tree. 4. paper is used for writing. （划线提问） _ _paper _ for? 5. many things were invented by edison. (变为主动语态) edison _ _ _. step three: they are used for seeing in the dark. be used for doing sth. “被用来做-“ 相当于be used to do sth. stones can be used fo

4、r building houses.= stones can be used to build houses. 拓展： 1. be used to doing sth. 习惯于做某 im used to getting up early. 2. be used as 被用作- this word can be used as a noun. 3. be used by 被- 使用 this kind of machine is used by farmers for getting in crops(收割庄稼)做一做：1. 刀被用来切东西。 knives are used _ _things.

5、 = knives are used _ _things. 2. 英语在中国被用作第二语言。 english is used _the second language in china. 3.这本书的作者是韩寒。the book is_ _hanhan.1 in the end, finally, at last “最后” 1)in the end “最后，终于”可用于过去时态，也可预测将来。 we won the match in the end. he will be a teacher in the end. 2)finally 表示事情在长时间之后发生，用法同in the end 但f

6、inally 还可以用来表示顺序的终结，此时不用at last. after three hours walk, he finally got there. there are three reasons why i hate him: first, hes rude; second, hes a liar; finally he owes me money. 3)at last 指经历长时间或周折，困难，终于向好的方向发展，有了好的结局。 at last he worked out the problem.2. by mistake 错误的 by accident 偶然，意外地 he put

7、 salt into his tea by mistake. i saw an old friend in the street by accident.3.not until“直到才” they didnt finish the work until yesterday evening.(译成汉语)四：反馈达标：单项选择1 sixteen-year-olds should_ work at night. a allow to b allowed to c be allowed to2 they _ seeing in the dark. a used for b used to c are

8、used for3 shoes_ adjustable heels can change the style. a and b with c for4 when _ the car_? a did, invent b was, invented c does, invent5 the light bulb is used for _ the dark. a in b at c during6 the flowers should _ often. a be watered b water c watered7 the pen is used _ a tool( 工具)_writing. a as, for b by, to c as, by8. we are_ by miss li. a teachers b taught c teaching9 i think it i