发布于：2020-05-25 16:28:54
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《Keep the Candle Burning》Look into Science! PPT优质课件
第一部分内容：Warming up
Do you like doing science experiments?
Why or why not?
What will happen if you put a jar upside down over a burning candle?
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Keep the Candle BurningPPT，第二部分内容：New Words
1. holder n. 支托物；持有者
2. shallow adj. 浅的
3. lighter n. 打火机；点火器
4. examine v. 检查
5. oxygen n. 氧气
6. match n. 火柴 v. 相称；相配
match作动词时，既可以作及物动词，也可以作不及物动词，意为“相称；相配”。
e.g. a packet of cigarettes and a box of matches.
一包香烟和一盒火柴
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Keep the Candle BurningPPT，第三部分内容：Let's do it!
1. Read the lesson and fill in the blanks.
Let’s do the experiment together! Put the candle in the candle holder. Put the candle holder on the dish. Fill the dish half full with water. Light the candle with a ______ or a lighter.
What can you see? The candle is burning. ___ the candle burn for two or three minutes. Then carefully put the jar over it until the top of the jar rests on the dish. As the candle burns, it _____ the oxygen in the air. When the candle stops ________, it has used up all the oxygen in the air.
The water inside the jar _____ and fills about ________ of the jar. This is because about one fifth of the air is made up of oxygen.
2. Circle the correct words to complete the sentences.
1. Don’t (use up / push up) all of the ink. Leave some for me.
2. The medical team (is made of / is made up of) five experienced doctors.
3. Please fill the hole (with / in) sand and water.
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Keep the Candle BurningPPT，第四部分内容：PROJECT
SCIENCE? THAT’S INTERESTING!
Read about the experiment in this lesson. With a group of classmates, practice the experiment. Do your experiment in front of the class. Don’t forget the following things:
● First, describe your experiment.
● Second, ask the class what they think will happen.
● Third, do the experiment.
● Finally, ask the class if the result is what they expected.
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Keep the Candle BurningPPT，第五部分内容：Language Points
1. Fill the dish half full with water.
倒半碟水。
half full with water是形容词短语，
在句中作状语，表伴随状态。
2. When the candle stops burning, it has
used up all the oxygen in the air.
当蜡烛停止燃烧时，它已经耗光了空气中的氧气。
use up 是固定短语，意为“用光、耗尽”。
其中的up是副词，意为“完、光、尽”，常与动词搭配使用。
e.g. He has used up all his energy.
他已筋疲力尽。
3. How far does the water rise?
水面上升了多少？
far在本句中表示“深（的程度）”。
e.g. They walked far into the forest.
他们走进森林深处。
Don’t work far into the night.
不要工作到深夜。
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Keep the Candle BurningPPT，第六部分内容：Homework
Write a short passage that explains how the Lava in Cup experiment works.
What will happen if you mix oil and water and then add salt to the mixture?
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