1. Unit 6 When was it invented? Period 4 Section A 4a-4c

2. Review  When was … invented ?  It was invented in…  What is it used for ?  It is used for…

3. New words  fridge /frid ʒ /  n. 冰箱  translate /trænsleit/  v. 翻译  lock /l ɔ k/, /la:k/  v. 锁上；锁住  earthquake / ə:(r)θkweik/  n. 地震

4.  sudden /s ʌ dən/  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 /instrumənt/  n. 器械； 仪器；工具

5. When was the zipper invented? It was invented in 1893. Who was it invented by? It was invented by Whit comb Judson. When was tea brought to Korea? It was brought to Korea during the 6th and 7th centuries. What is the hot ice- cream scoop used for? It’s used for serving really cold ice-cream.

6. 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。

7. 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 + was\were + 过去分词 + (by …) 否定句 主语 + was\were not + 过去分词 +(by …) 一般疑问句 was\were + 主语 + 过去分词 + (by …)? 特殊疑问句 疑问词 + was\were + 主语 + 过去分词 + (by …)?

8. 时态肯定形式否定形式疑问形式 一般 过去 时 S + was/were +done S + was/were +not + done Was /Were +S + done?

9. 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 last 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？

10. 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

11. 中考真题链接中考真题链接 1. — I feel very happy that I ____ to be the host. — Congratulations! (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

12. 4a Rewrite the sentences using the passive voice.  1. They sold the fridge at a low price.  The fridge was sold at a low price.

13.  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 ?

14.  4. Our parents advised us not to go out alone. 5. Different writers translated the book into different languages. We were advised not to go out alone by our parents. The book was translated into different languages by different writers.

15. 4b Complete the sentences with the correct forms of the verbs in the box.  1. You to the party last night, weren’t you? Why didn’t you go?  2. The earthquake all  of a sudden, but luckily the villagers to a safe place. were invited came were brought

16.  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 more! was locked rang were told broke were eaten asked

17. 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 Watson. In 1875, Alexander (learn) to send musical notes through an instrument similar to a telephone. was invented was born worked learned \ learnt

18.  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 (use) around the world. was invented was said is used

19. Summaries  1. at a low price 以一个很低的价格  2. take these photos 拍这些照片  3. go out alone 单独外出  4. translate the book into different language  把书翻译成不同种类的语言  5. all of sudden 突然  6. work on 从事，进行

20. 用所给词的适当形式填空。  1. This instrument is used for (play) music in class.  2. How many magazines (borrow) from the library today?  3. Edison was a great inventor. He had over 1.000 in his life. (invent).  4.A picture (put) on the blackboard before class.  5. Plates and dishes (not wash) after supper yesterday. playing were borrowed inventions was put weren’t washed