Transcript 自学检测3
Unit 4 Amazing Science Topic1 When was it invented? Section D 制作学校：振华中学 学习目标 1.复习掌握语法—被动语态，并能用之去做 题。 2.复习并背诵一些功能句。 3.通过阅读短文，理解什么是GPS定位系统 及其在生活中的应用。 自学指导1 1.自学内容：课本87页Grammar。 2.自学方法：背诵、观察、总结。 3.自学时间：5分钟 4.自学要求：背诵并观察句子，然后总结出被动 语态的构成规律，并能用之去做题。 Grammar Passive Voice (Ⅱ) The radio was invented by Guglielmo Marconi in 1895. When was the digital camera developed ? It was developed in the 1970s. Where was it developed? It was developed in Japan. What is a rocket used for? It is used for sending satellites or spaceships into space. 自学检测1 Passive voice was /were +done ( C ) 1. A big supermarket _____in our city last year. A. is built B. were built C. was built ( C ) 2.Could you tell me who the radio ____ by? A. invents B. invented C. was invented ( B ) 3. Many trees and flowers _____ in our school last year. They made our school more beautiful. A. have planted B. were planted C. planted ( C ) 4.The children ____ swim last month and they can swim very well now. A. are taught B. were taught C. were taught to ( A ) 5.It is said that potato chips _____by mistake about one hundred years ago. A. were invented B. invented C. are invented 自学指导2 自学内容：课本87页Functions. 自学方法：背诵。 自学时间：3分钟 自学要求：能够熟练掌握这些句子. Functions I wish I could go into space some day. I hope your dream will come true. It’s said that he invented more than two thousand things during his life. Inventing is interesting and exciting and everyone can be an inventor. 自学检测2 I wish I could go into space some day. I hope your dream will come true. It’s said that he invented more than two thousand things during his life. Inventing is interesting and exciting and everyone can be an inventor . 自学指导3 自学内容：课本87页的短文。 自学方法：扫读。 自学时间：3分钟 自学要求：通过理解生词和短语，能够回答88页的问题。 自学检测3 • 1. How did the early explorers know where they were? • They found out where they were by using stars. • 2. What’s the disadvantage of using the stars as guiding marks? • Its disadvantage is that it didn’t work well when the weather was bad and the stars could not be seen. • 3. What is a GPS? Is it useful to use? • It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful. • 4. What do you think the GPS will be used for in the future? • … 要点归纳 Key words: n.标示，记 号，符号 •explore, explorer, v.做记号， 做标记 •mark •find out, in…direction •work well, as long as •the rest of the time •solve, like, use, the shape of •great invention 强化练习： 根据首字母提示，完成短文。 Thanks to GPS, we can exactly know w here _____we are sed in now. GPS is like a man-made “star”. It can be u____ any place and any weather condition to find out our osition In the past, the early explorers had to use p________. stars in the s____ ky to tell them where they were, however, this method didn’t work well when the weather was bad. So GPS is a great invention that can help humans to better e________ xplore our planets. 知识小结 We Learn: 1. Some words : mark, explorer We can: 2. Some phrases: find out, in …, direction, as long as, work well, the rest of the time, be used to, the shape of 3. Some sentences: This method worked well at night as long as the weather was good and the stars could be seen. 1. Use the passive voice of the simple past tense more properly. 2.Talk about new technology GPS. 3. Develope our imagination and creativity by designing our own inventions. 当堂训练 ( C) 1.Hurry up, you ____ on the phone. A. Wanted B. was wanted C. are wanted ( C) 2. Some stories _____the children by the teacher everyday. A. is told for B. are told for C. are told to ( A) 3._____that he has studied abroad for five years. A. It is said B. It says C. That is said ( B) 4.The window ____ five minutes ago. A. is cleaned B. was cleaned C. can be cleaned ( C) 5.The children ______by the teachers at school. A. take care of B. are taken care C. are taken care of ( A ) 6. I have no idea what ______while I was asleep. A. happened B. was happened C. happens ( B ) 7. In some countries, tea _____before meals. A. is serving B. is served C. served ( A ) 8. This kind of books ______well. A. doesn’t sell B. isn’t selling C. aren’t sold. ( B ) 9. I ______ten minutes to decide which sentence was right by the teacher. A. gave B. was given C. was giving ( B ) 10. Teachers ______in every part of the world. A. are needing B. are needed C. will need Bye-bye!