九年级英语上册Unit6Whenwasiti教学课件新版人教新目标版 22页

Unit 6 When was it invented? Self Check 一般过去时被动语态 一般过去时的被动语态表示过去某一时刻发生的被动性动作 , 其基本结构为： 主语 + was / were + 过去分词 + by ... The teacher was visited by them two years ago. 他们两年前看过这位老师。 主动变被动解题步骤 : 1. 找宾语 ---- 即动作的承受者 2. 判断宾语的单复数 ---- 即 be 动词的单复数 3. 判断动词的时态 ---- 即 be 动词的时态 4. 修改谓语的时态 ---- 即原句动词改为过去分词 5. 修改原句的主语 ---- 即 by+ 主语 / 宾语 b e 要随着主语变 逻辑主语 by 来引 1. Tom broke the window.   The window was broken by Tom. 2.He broke the windows.  The windows were broken by him. 被动语态的大体构成： b e + P . P . （过去分词） 主动语态变被动之歌： 被动语态强调宾， be 后加上过去分。 b e 要随着主语变，人称时态要弄准。 行为对象作主语， 逻辑主语 by 来引。 Some fruits were bought (by him) yesterday. Look and say He bought some fruits yesterday. The motorbike was ridden to his factory (by him) last night . He r o de the motorbike to his factory last night . We made the snowman this morning . The snowman was made by us this morning . Self Check Complete the passage with the correct form of the words in the box. 1 invent doubt mention nearby website all of a sudden invent doubt mention nearly website all of a sudden It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may __________ things which are __________ the same. It’s hard to tell who came up with the idea first. invent nearly Some inventions can also lead to other inventions ______________. So some people _______ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention. That is why books or ________ usually _________ more than one inventor when giving information about inventions. invent doubt mention nearly website all of a sudden all of a sudden doubt websites mention Someone stole my watch. They used five eggs to make this big cake. Rewrite these sentences using the passive voice. 2 My watch was stolen (by someone). Five eggs were used to make this big cake. 3. When did they invent the personal computer? 4. They asked us not to run in the hallway. 5. Someone took the video back to the store. When was the personal computer invented? We were asked not to run in the hallway. The video was taken back to the store (by someone). Invention: When: Who: Purpose: Find out information about an invention you would like to know more about and write sentences below. 3 switch plug ( 断路插头 ) 2012 年， 富超穎 ( 中国 ) scooter carriage ( 滑板婴儿车 ) 2007 年， Valentin Vodev ( 奥地利 ) MORE PRACTICE The first paper __________ (make) in China in 105 AD. For over 500 years the art of making paper __________ (limit) to China. In 610, papermaking ______________ (introduce) into Japan. Kites ___________ (know) in China about 3,000 years ago. was made was limited was introduced were known Fill in the blanks with the correct form of the given verbs. 5. Wheelbarrows ____________ (invent) in the Han Dynasty. 6. Gunpowder _______________ (discover) by the Chinese hundreds of years ago. 7. Soccer _____________ (develop) in England in the 12th century. were invented was discovered was developed 按要求改写下列各句。 1. We planted these trees in 1997. ( 改成被动语态 ) ____________________________________ 2. He made a cake yesterday. ( 改成被动语态 ) ____________________________________ These trees were planted (by us) in 1997. A cake was made by him yesterday. 3. The teacher gave the students some advice. ( 改成被动语态 ) ______________________________________________ 4. He was seen to read a book in his room. ( 用 I 作主语 , 改为主动语态 ) ______________________________________________ 5. She was helped by all the people.( 改成一般疑问句 ) _______________________________________________ Some advice was given to the students by the teacher. I saw him read a book in his room. Was she helped by all the people? 根据中英文提示完成句子。 1. 根据历史记载 , 纸是由蔡伦发明的。 ______________ history, paper ___________ by Cai Lun. 2. 大约三千年前风筝在中国就被人使用了。 Kites_____________ in China about 3,000 years ago. According to was invented were used 3. 这个书架是木头做的。 This bookshelf _________________ wood. 4. 这部电影是由冯小刚导演的。 This film ______________________ Feng Xiaogang. is made of was directed by