When was it invented? The first period Unit 9

Warming up Can you tell when they were invented?

1885 年

1876 年

1927 年

1976 年

1927 年

1a GROUPWORK Look at the things below. Number them [1—5] according to the order they were invented

Model A: I think the telephone was invented before the car. B: Well, I think the telephone was invented after the car. 1a GROUPWORK

a 1b Listen and match the inventions with the dates. ___ 1876 ___ 1885 ___ 1927 ___ 1971 ___ 1976 b a c d e b e c d

TAPESCRIPTS Girl: Life must have been difficult when you were a kid. Woman: Oh, not really. Why do you say that? Girl: Well, you didn't have many modern inventions. Like, you probably didn't have a telephone, right? Woman: Of course we did! How old do you think I am? The telephone was invented in Girl: How about cars? I bet cars weren't invented yet.

Woman: Sure they were. Cars were invented in My family had a car. I think you need to take a history class, Alice. Girl: Ha, ha! Well, did you have a TV? Woman: No, we didn’t. The TV was invented around 1927, I think. Some friends of mine had one. But in those days, TVs were really expensive, and we couldn't afford one.

Girl: And I bet you didn't have calculators and computers and stuff. That's something I do know. We learned in school that hand- held calculators were invented in 1971 and personal computers were invented in Woman: You're right. I didn't have those things when I was young. But I do now!

1c PAIRWORK Student A, cover the dates and ask student B when were the things in the picture above were invented. Model A: When was the telephone invented? B: I think it was invented in A: When was the car invented? B: I think it was invented in I think it was invented after the telephone.

312 2a Listen and number the inventions in the order that you hear them.

2b Listen again and match the items in columns A, B, and C. invention Who was it/were they invented by? What is it/are they used for? shoes with adjustable heels Chelsea Lanmon scooping really cold ice cream battery-operated sneakers Jayce Coziar and Jamie Ellsworth seeing in the dark heated ice cream scoop Julie Thompson Changing the style of the shoes

Tapescripts Boy: What are those? Girl: They’re battery-operated slippers. Boy: What are they used for? Girl: They’re used for seeing in the dark. Boy: Oh, that’s cool! Who were they invented by? Girl: Julie Thompson. And look at this heated ice cream scoop.

Boy: I know what it’s for! It’s used for scooping out really cold ice cream. Girl: Right. It was invented by Chelsea Lanmon. Boy: My favorite are those shoes with adjustable heels. You know—you can move the heels up and down. They were invented by Jayce Coziar and Jamie Ellsworth. Girl: And what are they used for? Boy: Well, you can change the style of your shoes. You can make the shoes go from casual to dressy.

2c PAIRWORK Role play the conversations using the information in the chart above. Model A: Who was / were it / they invented? B: They was / were invented by …. A: What is / are it / they used for? B: It / they is / are used for …. be used for 被动语态, “ 被用来做 ……” 。介词 for 表目的用途, 可接名词或动名词形式。

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. Oral Practice

Grammar Focus The passive voice 被动语态 语法构成： 主语 + be 动词 + done ( 动词的过去分词 ) 主语是谓语动作的承受者。 表达意义：

一般现在时 am / is / are + done 一般过去时 was / were + done e.g. Chinese is spoken in by the most people in the world. 世界上讲汉语的人最多。 纸是中国发明的。 Paper was invented in China.

一般将来时 shall / will + be + done 过去将来时 would / should + be + done e.g. 我的作业将在半小时后被完成。 My homework will be finished in half an hour. 他们结束训练时将被派往部队。 They would be sent to the army when they finished the training.

现在进行时 am / is / are + being + done 过去进行时 was / were + being + done e.g. 这个计划正在执行中。 The project is being carried out. The case was being investigated then. 那时这案子正在调查中。

现在完成时 have / has + been + done 过去完成时 had + been + done e.g. This novel has been translated into several languages. 这本小说已被译成了几种语言。 They said that production costs had been reduced. 他们说生产成本已经下降了。

1. They produced that kind of car. 2. The workers built a bridge over the river. 3. Mother tells me a story every day. That kind of car was produced by them. A bridge was built by the workers over the river. I am told a story by Mother every day. I. 请把下列主动句变为被动句 :

HOMEWORK Find out an invention that you think is the most important. Write a short passage about it including the date, the people who invented it and what it is used for.