英语课件Unit9SectionA.ppt

Unit 9 When was it invented? Section A,九年级人教新目标,Inventions,abacus,calculator,microwave oven,binoculars,light bulbs,n. 发明物 invent v. 发明 inventor n. 发明家,1a. Look at the things. In what order do you think they were invented?,A: I think the calculator was invented before the computer. B: Well, I think the calculator was invented after the computer.,1b. Listen and match the inventions with the dates.,1927 1971 1976 1885 1876,Sample,Well, I think it was invented in 1876.,When was the telephone invented?,1c. Pairwork,When was the car invented?,I think it was invented in 1885. I think it was invented after the telephone.,2a. Listen and number the inventions in the order that you hear them.,3,1,2,adj. 电池供电的,n.（鞋、袜等的）后跟,adj. 可以调节的,v. 用勺舀 n. 勺子,n. 拖鞋,v. 加热,2b. Listen again. Match the inventions with their inventors and uses.,2c. Pairwork Role play conversations using the information in the chart above.,Sample dialogues A: What is this? B: This is a heated ice cream scoop. A: What is it used for? B: It is used for scooping really cold ice cream. A: Who was it invented by? B: It was invented by Chelsea Lanmon.,Explanation,use用法小结 use 及物动词“用，使用” ，作名词时，常与of 连用。 构成的短语词组 1. used to do sth. 过去常常做某事.（现在不做了）其否定形式常用didnt use to 或used not to。 eg: My father used to be a teacher. eg: She didnt use to / used not to wear a skirt.,You can be the best!,2. sb be used to sth / doing sth.习惯于某事或者习惯做某事其to为介词，其后跟名词，代词或形容词。 eg: I wasnt used to city life, but now I have got used to living in this city. 3. sth be used to do sth = sth be used for sth / doing sth. 被用来做,是被动语态，其中to 为不定式符号。 eg: A knife can be used to cut things. 4. make use of sth. 使用某物。其中use也是名词，可用 good, full, more, little等形容词修饰。 eg: We must make good use of time to study.,3a. Make a list of five helpful inventions and five annoying inventions.,Sentence pattern: What do you think is the most helpful/annoying invention? I think the most helpful/annoying invention is Why is that? Well, it/Because it,Pairwork Discuss your opinions in 3a with your partner.,I think the most helpful invention is the light bulb.,Why is that?,What do you think is the most helpful invention?,Well, it gives people more time to work and play every day.,Groupwork,Imagine that you are alone on a tiny island. Choose five inventions you would like to have on the island with you. Tell the group what you will chose and why.,Id like to have some matches because I could light a fire to keep warm.,Yes, but thats not going to help you leave