《Keep the Candle Burning》Look into Science! PPT教学课件
第一部分内容：Think About It !
Do you think science is interesting?
Why or why not?
Name one or two famous Chinese scientists.
What do you know about them?
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Keep the Candle BurningPPT，第二部分内容：Main phrases:
·use up
·be made up of
Main sentences:
·Science is so interesting!
·Fill the dish half full with water.
·Light the candle.
·Carefully put the jar over the candle until the top of the jar rests on the dish.
·The water inside the jar rises.
·Because about one fifth of the air is made up of oxygen,the water rises and fills about one fifth of the jar.
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Keep the Candle BurningPPT，第三部分内容：教材解读
1.Science is so interesting!
◆so为副词,意为“这样,如此”,用于修饰形容词或副词的原级,表示程度。常见用法如下:
(1)“so+形容词+a/an+单数名词”相当于“such a/an+形容词+单数名词”。
(2)so后可接many,much,few和little来表示名词的数量。
(3)so…that…意为“如此……以至于……”,构成结果状语从句。
◆interesting为形容词,意为“有趣的”,表示事物本身含有令人感兴趣的因素,可作表语或定语,用于说明物。
【拓展】interested也为形容词,意为“感兴趣的”,表示人对物的感受,在句中可作表语,常用于固定短语be/get interested in“对……感兴趣”。
2.Fill the dish half full with water.
half full with water为形容词短语,在句中作状语,表伴随状态。
3.Light the candle.
light为动词,意为“点燃”,可构成短语light up“点(烟),照亮”,宾语为代词时,应放在light与up之间。light的过去式和过去分词为lighted/lit,lighted/lit。
【拓展】(1)light作名词时,意为“灯,光”。
(2)light作形容词时,意为“轻的,浅的”。
4.Carefully put the jar over the candle until the top of the jar rests on the dish.
carefully为副词,意为“细心地,认真地”,其形容词形式为careful,意为“小心的”。care可用作动词,意为“关心”,也可用作名词,意为“照顾”。
5.When the candle stops burning,it has used up all the oxygen in the air.
use up意为“用完,用光”,为“动词+副词”构成的短语。这类短语用名词作宾语时,名词可用在副词前,也可放在副词后;用代词作宾语时,代词则必须放在副词前,该短语相当于run out of…,可用于被动语态。
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Keep the Candle BurningPPT，第四部分内容：Do the experiment in groups.
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：课堂练习
Ⅰ.选词(组)填空
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.
4.They didn’t realize their mistake_________(until/ as)we told them.
5.My brother wasn’t_________(strong enough/ enough strong)to lift the box.
Ⅱ.单项填空
1.I fill a jar_________water.And I cover the top_________a piece of cardboard.
A.with,with B.use,use
C.with,use D.use,with
2.Let’s do the experiment and see_________will happen.
A.what B.when C.how D.where
3.I will_________them the theory.
A.say B.speak C.talk D.tell
4.The water in the river_________after it rained.
A.rise B.raise C.raised D.rose
5.You needn’t keep the candle_________.It’s bright enough here.
A.burn B.to burn C.burning D.burned
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Keep the Candle BurningPPT，第六部分内容：Homework
1.Finish off the exercises in the activity book.
2.Preview Lesson 27.
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