《2012九年级英语 unit 9When was it invented Section A精品课件 人教新目标版》由会员分享，可在线阅读，更多相关《2012九年级英语 unit 9When was it invented Section A精品课件 人教新目标版（50页珍藏版）》请在金锄头文库上搜索。
1、九年级新目标,Unit 9 When was it invented?,Section A,Which do you think is the most important invention in the world?,What other can you think of?,TV? telephome? radio? computer? caculator? car?,Do you know what are they?,computer,radio,television,calculator,telephone,car,1a. Groupwork,Look at the things b
2、elow. In what orders do you think they were invented? Number them 1-5,5,2,4,1,3,1b.Listen and match the inventions with the dates.,1885,1976,a,b,1971,1876,c,d,1927,e,According to what you have listened, answer the questions below. 1. What did the grandma have when she was young? 2. Why didnt they ha
3、ve a television at that time? 3. Does grandma have personal computer now?,Telephone and car.,Because it was expensive.,Yes, she does.,1c. Pairwork,When was the computer invented?,I think it was invented in 1976.,_ Shoes with adjustable heels,Its used for scooping really cold ice cream.,Right. It was
4、 invented by Chelsea Lanmon.,_ battery-operated slippers,_ heated ice cream scoop,2a.Listen and number the inventions in the order.,3,1,2,2b.Listen again and match the items in columns.,2c. Pairwork,What is it used for?,It is used for seeing in the dark.,3a. Hate it or like it?,alarm clock,camera,li
5、ght bulb,herbicide,microwave oven,refrigerator,vedio graphying machine,air conditioner,plastic bag,Can you think of others?,3b. Pairwork,A: what do you think is the most helpful invention? B: I think the most helpful invention is the computer. A: why is that? B: Because it helps me search the inform
6、ation that I need.,4. Groupwork,Imagine that you are alone on a tiny island. Choose five inventions you would like to have on the island with you.,A: Id like to have a radio because I could listen to music all day. B: Yes, but thats not going to help you leave the island. I think it would be better
7、to have a telephone.,Explanation,1. Its used for scooping really cold ice cream. be used for 意为“被用来”,强调用途或作用。 e.g. The duster is used for cleaning the rooms. be used as 意为”被当作来用”，强调被当作工具或手段来用。 be used by 意为“被使用，强调使用者。 e.g. The big box is used as a table. The car is used by our manager.,2. Shoes with
8、 adjustable heels were invented by (1) with 是介词，意为”“具有，持有，带有”。 e.g. a girl with long hair a house with a blue roof (2) adjustable意为“可调整的，可调节的”。 e.g. I have a pair of shoes with adjustable heels. (3) invent是动词，意为“发明，创造”。 e.g. Edison invented the light bulb. invention是名词，“发明，发明物” e.g. Edison had about
9、 2,000 inventions during his lifetime.,3. Battery-operated slippers were invented by operate用法： (1) “操作” e.g. Can you operate the computer? (2)“起作用，见效果” e.g.The sleeping pill operated at once. (3)“经营，管理” e.g.The company operates ten factories. (4)“动手术” e.g.The doctor will operate on his mother next
10、week.,4. annoying adj. 讨厌的, 恼人的 (往往指事物) e.g. How annoying it is! 真讨厌。 annoyed adj. 生气的, 恼怒的 (往往指人) e.g. My father is annoyed with me. 爸爸在生我气。,5. helpful adj. 有帮助的, 有益的 e.g. Mr. White is a very helpful man. 构词法：n + ful adj e.g. use + ful useful thank + ful thankful beauty+ ful beautiful care + ful ca
11、reful,6. Imagine that you are alone on tiny island. alone adj. 意为“单独的”, 不带感情色彩。 e.g. When his wife died, he lived alone. lonely adj. 意为“孤独的, 寂寞的” e.g. He feels lonely when he is alone. lonely 指地方时表示“荒凉的, 偏僻的” e.g. The old man lives in a lonely small village.,7. I think it would be better to have (1)
12、 would 在此处表示“料想或猜想、揣测”，后接动词原形或完成式。 e.g. What would she be doing there? (2)It is better to do sth “最好做“，it是形式主语，动词不定式是真正的主语。 e.g. It is better for you to walk to school. It is better to do sth=had better to do sth,Grammar focus,The passive voice,一、语态 英语中动词有主动语态和被动语态两种语态. 主动语态表示主语是动作的执行者,被动语态表示 主语是动作的
13、承受者,在被动语态中动作 的执行者 有时用by短语表示出来. 二、被动语态的构成 助动词be+及物动词的过去分词 am(is,are)+done 一般现在时 was(were)+done 一般过去时,三、被动语态的用法 1. 不知动作执行者时,常用被动语态. eg. My bike was stolen yesterday. This car is made in American. 2. 不必要说出动作执行者时,常用被动语态。 eg. Rome was not built in a day. 3. 为了突出强调动作的承受者时,常用被动语态. eg. Thousands of beaches
14、are polluted .,四、主动语态变为被动语态的步骤: They speak English. 主语 谓语 宾语 English is spoken by them. 主语 谓语动词的过去分词 宾语,(1)主动语态的宾语变成被动语态的主语。 (2)主动语态的谓语动词变为被动语态的谓语动词，即”“be+及物动词的过去分词”(be有时态、人称和数的变化)。 (3)主动语态的主语变为by的宾语。,主动语态变为被动语态的步骤,主动语态改被动语态,Bell,invented,the telephone,in 1876.,was,by,五、被动语态的时态表示 被动语态的时态一般只通过be表现, 过
15、去分词 不变。例如： 一般现在时: The trees are planted by the farmers. 一般过去时: The trees were planted by the farmers. 现在进行时: The trees are being planted by the farmers.,一般将来时：The trees will be planted by the farmers. 现在完成时：The trees have been planted by the farmers. 含情态动词的被动语态：The trees can (must,should) be planted
16、 by the farmers.,六、被动语态的几种句型： 肯定句 主语+be+过去分词+(by) A sweet song was sung by her on the stage. 否定句 主语+be+not+过去分词+(by) A sweet song wasnt sung by her on the stage. 一般疑问句 Be+主语+过去分词+(by) Was a sweet song sung by her on the stage? 特殊疑问句 疑问词+be+主语+过去分词+(by) Where was a sweet song sung by her?,They produced that kind of car. The workers built a bridge over the river. Mother tells me a story every day.,请把
