九年级英语|Unit 9 When was it invented?|Section A |1a-2c

课件27张PPT。Unit 9
When was it invented? Xia Cun Middle School By Yang JunmeiPeriod 1calculatorWhat’s this in English？What’s this in English？TV What’s this in English?telephoneWhat’s this in English?carWhat’s this in English?computerLanguage Goals:Talk about the history of inventions.
Grammar Focus:The passive voice.1b: listen and match the inventions and the dates._____ 1876
_____ 1885
_____ 1927
_____ 1971
_____ 1976d
a
e
c
bThe telephone was invented in 1876.
The car was invented in 1885.When was … invented ?Sample 3:
B:1cPAIRWORKWhen was the telephone invented ?
I think it was invented in 1876.battery-operated
slippersheated
ice cream scoopshoes with adjustable heels电池供电
的拖鞋加热的
冰激凌勺可调节
后跟的鞋2b: listen again and match the items in columns A,B and C.3122a: listen and number the inventions in the order that you hear them.2cPAIRWORKWho was it / were they invented by ?
It was/ They were invented by
Chelsea Lanmon.What are they used for?They are used for seeing in the dark.PAIRWORKWhat are they used for?They are used for scooping really cold ice cream.What are they used for?They are used for changing the style of the shoes.
(1)be?used?for?(doing)?sth.被用来做……
for表用途。 ?Stones?can?be?used?for?building houses. (2)be?used?as?sth.被作为……用 This?book?can?be?used?as?a?text?book. (3)be?used?by?sb被某人使用 English?is?used?by?people?in?many
countries.
（4）be?used?to?用作谓语，意为"习惯于"，可用于各种时态。这里to是介词。 ???????*He?is?used?to?the?cold?weather. ???????The passive voice.被动语态 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
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.被动语态的构成:助动词be+ (及物动词的) 过去分词 一般现在时一般过去时The passive voice.被动语态被动语态的用法: 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.
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 are polluted (污染).The passive voice.被动语态主动语态变为被动语态的步骤:把原主动句中的宾语转换为被动语态的主语.
2.把动词改为被动形式,即 “be + 过去分词” . 注意 be
动词要按新的主语的人称和数进行变化,时态要和原来
的主动语态的时态保持一致.
3. 原来主动语态句中的主语,如果需要,就放在by后面
以它的宾格形式出现. 如果没有必要就可以省略.其他的
成分 (定语,状语) 不变, 句式也不能变.The passive voice.被动语态主动语态变被动语态的结构图:Bell invented the telephone in 1876.
The telephone was invented by Bell in 1876. 主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语The passive voice.被动语态主动语态变为被动语态的步骤:把原主动句中的宾语转换为被动语态的主语.
2.把动词改为被动形式,即 “be + 过去分词” . 注意 be
动词要按新的主语的人称和数进行变化,时态要和原来
的主动语态的时态保持一致.
3. 原来主动语态句中的主语,如果需要,就放在by后面
以它的宾格形式出现. 如果没有必要就可以省略.其他的
成分 (定语,状语) 不变, 句式也不能变.1. The woman asked the policeman for help.
2. The old man on TV tells a story on Sunday.
3. Do they use the box as a table?
4. She sent me a collection last week.
5. The teacher doesn’t teach us math this term.练习：请把下列主动句变为被动句6. Did Lily buy her sister a hat?
7. We often hear him play the violin at
home.
8. The lazy boy didn’t wash clothes
yesterday.
9. Students listen to the kind teacher
carefully.
10.When did your father take you to
the park ? 有两种被动语态的一些动词:buy 买 give 给 pay支付 teach 教授 tell 告诉 show 展示 lend 借出通常用直接宾语作被动语态的主语一些动词:bring拿来 do做 make 制作 pass传递 sell 卖 send 送、寄 sing 唱 write写A bike was lent to me ( by him). I was lent a bike (by him).A letter was written to her (by her son). 合习惯She was written a letter ( by her son) 不合习惯注意：在主动句中see ，watch ，hear，make
等后+宾语+动词原形的结构变为被
动句时一律在see ，watch ，hear，
make等后加上to。练习1 We hear birds sing every morning.Birds are heard to sing by us every morning.
2 His father made him stay at home.He was made to stay at home by his father. 由 不及物动词+介词或副词构成的被动语态She looks after her grandmother. (主动句 )Her grandmother is looked after by her.(被动句 )My friends laughed at me all the time. (主动句 )
I was laughed at by my friends all the time. (被动句 )
注 :介词不能省略 =及物动词