《when was it invented》

　　Teaching aims:

　　1. Knowledge aims:

　　(1) Master the usage of some new words and sentence pattern, and understand the usages of passive voice in past tense;

　　(2) Talk about the history of some inventions in English;

　　2. Ability aims:

　　(1) Can use some simple expressions to communicate in English class;

　　(2) Can describe one thing simply under the help of teacher or with some teaching aids;

　　(3) Can do the self-checking during speaking.

　　3. Emotional aims:

　　(1) Learn about the history of inventions, and foster the interest in the science;

　　(2) Can improve the confidence of learning English, and not afraid of speaking English;

　　(3) Can ask advices of others actively and overcome the difficulties bravely.

　　Key points and difficult points:

　　Key point: The structure of passive voice in past tense “was / were + v. pp. ”

　　Difficult point: important words and expressions

　　Teaching aids: a tape recorder, multimedia, pictures

　　Teaching methods: The teaching methods will be used in this class include following three methods: Communicative Approach, Task-based Teaching Method, Audio-Lingual Approach.

　　Teaching procedures:

　　Step 1 Lead-in

　　Hello! Everyone. Today we are going to learn a new unit. At the very beginning of this class, I want to ask you a question, and let us see, do you have enough history knowledge. If you know the answers, hands up quickly, I will invite the quickest one to answer this question. Are you ready? Ok, attention please. My question is :

　　What are the greatest four inventions in ancient China?

　　Ok, Leo is the first one! Please tell us your answer.

　　He answered in Chinese, is he right? Yes, he is right. But do you know how to say these things in English? Let’s look at the PPT. They are powder, printing, compass, and papermaking technology.

　　Now let’s watch a short video to learn something about these four inventions.

　　What do you think about the video? Do you think these inventions are great? Ok, today we will learn some other inventions.

　　Step 2 Pre-listening

　　Now, let us review the way of reading years first. Please look at the blackboard, how to read these years? (I will write some years on the blackboard)

　　The first one, 1876. How do we read it? Eighteen seventy-six, is it right? Yes, it is right. So, what is the regular of reading these numbers? Yes, we can read the year as two parts. When we read them, we can read the first two numbers, then read the second two numbers. So take the year “1876” as an example again, we can start with “18”, then read “76”. Are you clear?

　　Ok, very good. Now let do some practice.

　　How to read 1885? Eighteen eighty-five? Yes, it is. What about 1927? Who can have a try? Lily, please have a try. Ok, she said “nineteen twenty-seven”. Is she right? Yes, she is right! “2001”，this one is a bit special. Usually we read it as “two thousand and one”, because there are two zeros in the middle of this number. Please pay more attention to this kind of numbers. Any questions? No questions?

　　Ok, everyone, please turn to page 41. And look at the picture of this unit. What are they in English? Yes, they are computer, car, telephone and TV. So do you know which one was invented first? Which one was invented last? Ok, here I need you guess. And work in pairs, to rank them according to the time when they invented. When you finished, please check the answer with your desk mate by using the conversation structure on the PPT (I will show the following conversation on PPT ). Do you understand? Ok, very good, after that I will choose some groups to tell us their orders. Now, do the pair work. Take your time.

　　A: Can you guess which one of them was invented first?

　　B: I think the … was invented first.

　　A: Which one of them was invented last?

　　B: Well, I think the … was invented last.

　　A: I think the TV was invented before the car.

　　B: Well, I think the TV was invented after the car.

　　Ok, every group has finished. So Xiao Hong, please.

　　Thank you, sit down please. She said the first one is TV, second one is computer, then is telephone, the last one is car. Any different ideas? Ok, Zhang Lei, what is your order? Ok, very good. Sit down please. His answer is a little different with Xiao Hong’s. He believes that TV was invented after telephone. What is your opinions? So, is there anyone who knows when the TV was invented and when the telephone was invented? Ok, it seems no one can tell us the specific time. Now let us listen to the tape and find out the time when they were invented.

　　Step 3 While-listening

　　I will play this record only once, so you should listen carefully. And check your answers in 1a, and then match the inventions with the years in activity 1b. Are you ready? Ok, listen carefully!

　　Ok, do you get the useful information from this listening? I think most of us have known the time when these inventions were invented. Who wants to tell me the correct answer? Ok, John, please tell me your answer! Ok, his opinion is: telephone was invented in 1876, car was invented in 1885, TV was invented in 1927, computer was invented in 1971. Is he right? Yes, he is right. Ok, excellent. Sit down please. So, we can know that telephone was invented first, car was invented second, TV was invented third, the last invented was computer. Ok, now, I will play the record for the second time. At this time, you should read after the record silently. Are you ready? Ok, let’s begin.

　　Step 4 Post-listening

　　Now, let’s move on to another section. You are supposed to make a dialogue with your desk mate by using the information in 1b. Let’s look at the dialogue first. The first sentence is a question sentence, one student asks, and the other students answers. Then use other inventions in 1b to replace the relative words. Are you clear? Ok, 5minutes for you. Start!

　　Are you finished? Ok, who want to share their dialogue with us? Ok, Jane and Tom, please. Ok, very good.

　　Then let’s do some extra exercises. Look at PPT, and make conversations by using the information provided in the chart. In this activity, I need you to change your partners. Come on, change seat, do the activity with different students.

　　Ok, one more thing, one asks and one answers, then change the role, Ok? Any questions? Ok, let’s begin.

　　Ok, time is up. Any volunteers? Who wants to perform your dialogues? Ok, this group. Very good, give them some applause!

　　Step 5 Summary and Homework

　　You all did very well in this lesson. Now let’s do a summary. I ask and you answer, Ok?

　　When was the telephone invented?

　　When was the computer invented?

　　Now, you ask and I answer.

　　It was invented in 1927.

　　It was invented in 1885.

　　Ok, very good. Today’s homework.

　　Imagine you are alone on a tiny island. Choose three inventions you think is the most helpful, and think about why you choose them. In the next class, I will ask some students to give us a short report like this: I think the most helpful invention is the cell phone because people could communicate with each other very easily. And I will also choose a light, because I can see objects in the night.

　　Do you understand? Ok, if there is no any questions, class is over. See you tomorrow!