2021新版人教版选修二英语Unit1 Using Language 1 ppt课件.pptx

1、Scientific experiments Exploration Look at the photos below, and discuss in groups what these activities have to do with science. Look at the photos below, and discuss in groups what these activities have to do with science. Look at the photos below, and discuss in groups what these activities have

2、to do with science. Look at the photos below, and discuss in groups what these activities have to do with science. Look at the photos below, and discuss in groups what these activities have to do with science. The photos above are related to the conversation you will hear. Using the photos, try to p

3、redict the answers to the following questions. 1. Where are the people in the conversation going to go? 2. What kind of place is it, and what does it focus on? 3. What kinds of things can you do there? Predict by using pictures One way to get more out of your listening is to predict what you will he

4、ar. Using the pictures provided and the knowledge you already have, you can guess the kinds of information you should listen for. At times, you may even be able to guess exactly what will be talked about. This will help you focus better when listening, making your listening more effective. Strategy

5、Listen to the conversation and see if your answers for Activity 2 are correct. Then write down the letters (A-E) for the photos in the order that you hear them described. 1. _ 2. _ 3. _ 4. _ 5. _ Listen again and complete the descriptions of the photos above. Photo A: A giant dish; when you speak in

6、to it, it _ the sound back and _. You can use it to speak in a _ to someone 17 metres away. Photo B: A giant _ that you can use your feet to play. Instead of playing the sounds of a piano, it plays the voices of _. Photo C: You look at a blue screen for a while, and then suddenly you can see _ movin

7、g around on it. These are our _. Photo D: A _ where you can see yourself reflected thousands of times. Photo E: You stand in front of _, and it casts different shadows of you, in _ the rainbow. n. 彩虹彩虹 Tapescript 1. The conversation is about the City of Science and Industry, a museum in Paris. Would

8、 you like to go to this museum? Why or why not? 2. Are there any museums like this in China? What other interesting museums are there? Discuss the following questions in groups. In groups, choose one of the museum activities on the previous page or brainstorm another scientific research or experimen

9、t that you are interested in. Make a short presentation to the class about your choice. Use the example and useful phrases below to help you. Today, I want to talk to you about a very strange phenomenon called a non-Newtonian fluid. You can make it easily using equal parts of water and cornflour, li

10、ke I have here. A non-Newtonian fluid is strange because you can pour it like a liquid, but if you put any pressure on it, it suddenly becomes hard as concrete. In fact, it becomes hard enough to stand on. Then, as soon as you take the pressure off, it becomes a liquid again. This shows that it is p

11、ossible that something can exist as a liquid and a solid at the same time. n. 混凝土混凝土 非牛顿流体非牛顿流体 Talking about scientific phenomenon. . can/cannot exist in the form of a solid/gas and a liquid/plasma . is both a . and a . at the same time . how light/sound is reflected . . the existence of other . Th

12、is occurs when . If you, it will become . That demonstrates . n. 血浆血浆 This experiment/ research shows Through this, we know that . We can prove that . This evidence proves . 1. You stand in front of _, and it casts different shadows of you, in _ the rainbow. cast vt. to send light or shadow (= an ar

13、ea of darkness) in a particular direction 投射；向投射；向投以（视线、笑容等）；投以（视线、笑容等）； 投掷投掷 eg The moon cast a white light into the room. 皎洁皎洁的月光洒进房间里的月光洒进房间里。 She cast a quick look in the rear mirror. 她她迅速看了一眼后视镜。迅速看了一眼后视镜。 The knight cast the sword far out into the lake. 骑士骑士将剑远远地扔进湖中将剑远远地扔进湖中。 n. 投，掷，抛；全体演员投，掷

14、，抛；全体演员 eg After the final performance, the director threw a party for the cast. 最后最后一场演出过后，导演为全体演员举办了一场演出过后，导演为全体演员举办了 一个聚会一个聚会。 shadow n. the dark shape that someone or something makes on a surface when they are between that surface and the light 阴影；影子；背光处阴影；影子；背光处 eg The building cast its shadow

15、(=made a shadow) across the street. 大楼大楼在街上投下影子在街上投下影子。 shadow与与 shade shadow 指某物在光线的照射下映在墙上、指某物在光线的照射下映在墙上、 地上等处的阴影。地上等处的阴影。 shade 表示光线照不到的地方或阴凉处。表示光线照不到的地方或阴凉处。 【语境应用语境应用】辨析辨析填空：填空：shadow, shade 1. In front of our house stands a tall tree, which provides _ for us in summer. 2. The children were ha

16、ving fun, chasing each others _. shade shadows 2. A non-Newtonian fluid is strange because you can pour it like a liquid pour vt. (of a liquid or substance that flows like liquid) flow, esp downwards, in a continuous stream 倒出倒出；倾泻；斟（饮料）；倾泻；斟（饮料） eg She poured coffee for everyone. 她她为每一位倒了咖啡为每一位倒了咖啡

17、。 pour down（雨）倾盆而下；（从（雨）倾盆而下；（从） 流下流下 pour in 使使流入；大量地涌进来流入；大量地涌进来 pour into 不断不断地流进地流进 pour out 倒出倒出；使；使流出；倾诉流出；倾诉 【语境应用语境应用】单句单句语法填空语法填空 1. I poured the milk from the bottle _ the cups. 2. After the conference the people poured _ in crowds. 3. We were sailing on the sea when it suddenly poured _.

18、4. Offers of help poured _ from all over the country. into out down in 将将下列句子翻译成汉语。下列句子翻译成汉语。 1. As soon as the door was opened, tens of thousands of fans poured into the stadium. 2. Nancy listened carefully while I poured out my troubles. 门门一开，好几万球迷涌进了体育场一开，好几万球迷涌进了体育场。 Nancy认真地听我倾诉心中的烦恼。认真地听我倾诉心中的烦恼。 Make a short presentation to the class about your scientific experiences.