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1、Unit 9 When was it invented?,Period 5 Section A 4a-4c,Review,When was invented ? It was invented in What is it used for ? It is used for,最糟糕的发明,“二十世纪最糟糕的发明是什么 ? ”就是人们每天大量使用的塑料袋。 诞生于上个世纪三十年代的塑料袋，其家族包括用塑料制成的快餐饭盒、包装纸、餐用杯盘、饮料瓶、酸奶杯、雪糕杯等等。这些废弃物形成的垃圾，数量多、体积大、重量轻、不降解，给治理工作带来很多技术难题和社会问题。 比如，散落在田间、路边及草丛中的塑料餐盒
2、，一旦被牲畜吞食，就会危及健康甚至导致死亡。填埋废弃塑料袋、塑料餐盒的土地，不能生长庄稼和树木，造成土地板结，而焚烧处理这些塑料垃圾，则会释放出多种化学有毒气体，其中一种称为二噁英的化合物，毒性极大。,fridge /frid/ n. 冰箱,I think a fridge is the most useful invention in modern world.,translate /trnsleit/ v. 翻译,She is translating the words into English. She is a good translator.,lock /lk/, /la:k/ v.
3、 锁上；锁住,He is locking the car. These locks are strong.,earthquake / :(r)kweik/n. 地震,Dont be afraid of the earthquake.,biscuit /biskit/ n. 饼干,Dont eat too much biscuit, it isnt good for your health.,cookie/kuki/ n. 曲奇饼干,Dont eat so much cookie, because it is too sweet.,instrument /instrumnt/ n. 器械； 仪器
4、；工具,There are many kinds of instruments in our school.,New words,fridge /frid/ n. 冰箱 translate /trnsleit/ v. 翻译 lock /lk/, /la:k/ v. 锁上；锁住 earthquake / :(r)kweik/ n. 地震,sudden /sdn/ adj. 突然（的） all of a sudden 突然; 猛地 biscuit /biskit/ n. 饼干 cookie/kuki/ n. 曲奇饼干 instrument /instrumnt/ n. 器械； 仪器；工具,根据汉语
5、提示完成单词。,1. The boy lost his parents during the last years (地震). 2. The students were asked to (翻译) the story into English. 3. The police found the lost boy under the destroyed house through an (仪器)。,earthquake,translate,instrument,4. I only have some (饼干) and a glass of milk every morning. 5. If you
6、 cant eat all these fruit , you may put some into your (冰箱).,biscuits,fridge,Grammar Focus,Grammar,The passive voice 被动语态 语态是表示主语与谓语的关系的。如果主语是动作的执行者，动词要用主动语态；反之，如果主语是动作的承受者，动词就要使用被动语态。 被动语态谓语部分结构为助动词be + 过去分词。,一般过去时态的被动形式,注意：这里 be 的形式决定了被动语态的时态，其后的过去分词没有变化。,肯定句 主语 + waswere + 过去分词 + (by ) 否定句 主语+ wa
7、swere not +过去分词 +(by ) 一般疑问句 waswere +主语+过去分词 + (by )? 特殊疑问句 疑问词 + waswere +主语 + 过去分词 + (by )?,S + was/were +done,S + was/were +not + done,Was /Were +S + done?,Maria bought the book last year. (主动句) The book was bought by Maria last year. When was the book bought by Maria? What was bought by Maria l
8、ast year?,被动句：,让我们看一看各种句型的主动语态变为被动语态时，到底发生了什么变化？,Quiz,把下列句子改为被动语态。 1. They made these computers in Shenzhen. These computers _ _ in Shenzhen. 2. She bought a new bike yesterday. A new bike _ _ by her yesterday.,were made,was bought,中考真题链接,1. I feel very happy that I _ to be the host. Congratulations
9、! (07 江西) A. choose B. am chosen C. was chosen D. haven chosen 2. Today Chinese _ by more and more people around the world. (07北京) A. was spoken B. is spoken C. spoke D. speak,3(课改实验区考生做) (07重庆) Your hometown has changed a lot Yes. Take a look at these tall buildings. They _ last year A. build Bbuil
10、t C. was built Dwere built (非课改实验区考生做) Why is the classroom so dirty? Sorry, sir. It _ yesterday We forgot to do it A. dont clean B. didnt clean C. werent cleaned D. wasnt cleaned,再次阅读翻译语法句子,When was the zipper invented? Who was it invented by? When was tea brought to Korea? What is the hot ice-crea
11、m scoop used for? It was invented in 1893. It was invented by Whitcomb Judson. It was brought to Korea during the 6th and 7th centuries. Its used for serving really cold ice-cream.,4a Rewrite the sentences using the passive voice.,1. They sold the fridge at a low price. The fridge was sold at a low
12、price.,2. Somebody stole my camera from my hotel room. 3. Where did you take these photos?,My camera was stolen by somebody from my hotel room.,Where were these photos taken by you ?,4. Our parents advised us not to go out alone. 5. Different writers translated the book into different languages.,We
13、were advised not to go out alone by our parents.,The book was translated into different languages by different writers.,4b Complete the sentences with the correct forms of the verbs in the box.,1. You to the party last night, werent you? Why didnt you go? 2. The earthquake all of a sudden, but lucki
14、ly the villagers to a safe place.,were invited,came,were brought,3. The door when we arrived, so we the bell. 4. The students not to eat or drink in class. But Ruby the rule when she started eating a biscuit in science class. 5. The cookies by the hungry kids in less than 20 minutes. Then they for m
15、ore!,was locked,rang,were told,broke,were eaten,asked,4c Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks,The telephone (invent) by Alexander Graham Bell. He (born) in 1847. Alexander (work) on the invention of the telephone with Thomas
16、Watson. In 1875, Alexander (learn) to send musical notes through an instrument similar to a telephone.,was invented,was born,worked,learned learnt,Finally, the telephone (invent) in 1876. The first sentence that (say) on the telephone by Alexander was “Mr. Watson, come here; I want to see you.” Today the telephone
