Unit 6 Section B (3a-Self Check) 课件人教版九年级英语.pptx

Section B (3a-Self check),Unit 6 When was it invented?,Language goals,By the end of the class, you will be able to Master the following words and sentences of Unit 6. Learn how to introduce an invention by using the passive voice. Review the passive voice （past tense ）.,Who invented basketball ?,When was the first basketball game in history played?,Why did James Naismith invent basketball?,How to play basketball?,What does basketball look like?,Revision,who,when,how,.was/were invented by. .invented .,in+ 年份 on+月，日，年,at the same time although,because.in order to.,There be. color,shape,size,what,why,invention,How to introduce an invention,why,when,who,what,how,Shennong,around 5,000 years ago,by accident,brown water nice fresh smell trade,put the tea into the cup,then pour the water,How to introduce tea,Discuss about what you want to invent and why.,Lead in,3a Think of something that you do not like to do. Then think of an invention that could help you. Make notes.,Problem：_ New invention：_ What it is used for：_,quickly taking notes in class,a special pen,correcting mistakes,3b Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.,This special pen was invented by Liu Jie. It has three colors and is used for.,This special pen was invented by Liu Jie. It has three colors and is used for taking notes and correcting mistakes. It is very cheap. It is easy to take. It is made of plastic so its not heavy. Do you want to buy it?,Self Check 1,Complete the passage with the correct forms of the words in the box.,inventdoubtmentionwebsite 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 almost the,invent,This is because. 这是因为 系动词之后是表语，表语是由一个句子充 当的，即称为表语从句，连接表语从句的词有：because，why，that，what，who， when，where，which，whether，how等。

same. Its hard to tell who came up with the idea first. 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 elses idea to create his or her invention. That is why books or _ usually _ more than one inventor when giving information about inventions.,all of a sudden,doubt,websites,mention,Self Check 1,Rewrite these sentences using the passive voice.,1Someone stole my watch. _ 2They used five eggs to make this big cake. _ 3When did they invent the personal computer? _,My watch was stolen by someone.,Five eggs were used to make this big cake by them.,When was the personal computer invented by them?,Self Check 2,4They asked us not to run in the hallway. _ 5Someone took the video back to the store. _,We were asked not to run in the hallway by them.,The video was taken back to the store by someone.,Self Check 2,Find out information about an invention you would like to know more about and write sentences below.,Invention：_ When：_ Who：_ Purpose：_,Bell,Telephone,1876,To communicate with others,Self Check 3,Exercises,短文填空 根据短文上下文和首字母提示写出所缺的单词， 使短文内容完整、 连贯。

Soap is widely used in our life around the world. Once soap was a dangerous-to-make hair p _ , but it is something that it would be difficult to live without today. Soap is everywhere. We use it every day and c _ it as something important in our life. It also has an amazing h_. In Babylon around 2800 B.C., the e _ known soap was made and used. Ancient Egyptians also made soap. At one time, soap-making was not s_. Thats because lye（ 碱液） b_chemical burns or even made people blind in the making process.,product,consider,history,earliest,safe,brought,Exercises,Other dangerous materials were also m_ with animal fats and oils. Later, soap became a_in stores and people gradually stopped making it in their homes. Originally（ 最初）， soap was not mainly used for c_ . Instead, it was used as gel（ 凝胶）for making hair stay in place or smell good. Arabs first made the soap that we know today. They created colored, liquid, and hard soaps. They even had soaps which were used for shaving（ 刮胡子） . Soap became peoples f _ in the late 1800s. Advertising in Europe and the US helped people understand the connection between cleanliness and good health. Now, soap is something we wouldnt want to live without.,mixed,available,cleaning,favorite/favourite,Homework,1.Write a description of your new invention. 2.Review Unit 7-Section A (1a 2d).,Bye-bye!,。