冀教版英语八下《unit 4 look into science》（lesson 25）ppt课件

1、,Lesson 25 Lets Do an Experiment!,Learning aims:,Aim of knowledge(知识目标) A. Vocabulary: （词汇）science experiment prove observe cardboard fillwith cover.with, turn upside down inside outside B. Sentence Patterns（句子）1. Im sure the floor wont get wet.2. Im not sure. I think the floor will get wet.3. Maybe you should do this experiment outside. Aim of ability（能力目标） How to to talk about certainty and uncertainty. Aim of emotion(情感目标) Arouse the students interest in doing science experiment.,science 科学 e

2、xperiment 实验;试验 theory 理论;学说 fill 装满 jar 广口瓶; 罐子 upside 上部;上边 prove 证实; 证明 observe 观察;监视 scientific 科学的 method 方法; 办法,Learn the words and expressions,Fill in the blanks with the right words and the first letter is given. 1. Lets do an e . 2. Brian has one t andDanny has another. 3. They can p whos right. 4. I turn the jar u down. 5. Please o carefully.,xperiment,heory,rove,pside,bserve,.,1. What will Brain do?,He will do an experiment,1. Why does Danny say they should do this experiment outside?

3、 Because Danny thinks the floor will get wet. 2. Whats Brains theory? Brian is sure the floor wont get wet.,QUESTIONS,1.用把装满 _ 2.用把盖住 _ 3.我(不)确信 _ 4.正面朝上 _ 5.把翻转_ 6.get wet _ 7.do an experiment _ 8.a piece of cardboard _ 9.inside（反义词） _ 10.theory（复数） _ 11.careful (副词）_ 11.science(形容词）_,fillwith,cover with,I am (not) sure,right side up,turn upside down / turn over,变湿,做一个实验,一块硬纸板,outside,theories,carefully,scientific,Lets do it,Write down the steps of doing the experiment 1. Fill a jar with water.

4、 2. Cover the top with a piece of cardboard. 3. Turn the jar upside down. What will happen ? You may say Im sure Im not sure The floor will get wet. I think The floor wont get wet Maybe The cardboard can keep thewater in the jar.,fill with 用装满 (主语是人)be full of / be filled with (主语是物或容器) 同义句转换。 1.The rooms are full of the students now.The rooms _ _ _ the students now. 2.My pocket is filled with the money.My pocket _ _ _ the money.选择。 5. Can you _ the box _ books? ( ) A fill ,with B full ,with C f

5、illed ,with D full , in 6.The child _ all the bowls _ water.( ) A fill,with B fills, with C is full ,with D is filled ,with,are filled with,is full of,A,B,学以致用,upside down 的意思是“向下翻转过来”. You hold the book upside down. 你把书拿倒了。 right side up 是“正面朝上”的意思,That picture is upside down.,三、 Im sure the floor wont get wet. 我确信地板不会湿。 b e sure 表示肯定, 有把握,而be not sure 表示不确定 be sure/ be not sure 后可接句子，还可接代词、名词、动名词或不定式。 常见用法： be sure of sb / doing sth , be sure to do sth 完成下列各题。 1.我确信她会来。_that she will come here

6、. 2.他没有把握通过考试_to past the exam. 3.Im sure _ Jim plays basketball well .（ ） A of B to C that D with,Im sure,Hes not sure,C,. ., He _ the stockings _ christmas presents. （用装满）, Please pass me a bottle _ water. A. full with B. filled of C. filling with D. full of, My mother is holding the book _ _ . （倒着）,我弟弟用一块玻璃盖住了那个杯子。 My brother _ the glass _ a piece of glass, 我肯定他会来。 _ _ _ he will come.,filled,with,D,upside down,covered,with,I am sure,New words: science scientific experiment fill prove method t

7、heory jar observe Phrases : be filled with be full of cover with turn upside down Sentence Patterns:,sb. be sure +that 从句,sb. be not sure +疑问词引导的从句,How do we do the experiment,First, _ a jar _ water. Then ,_ the top _ a piece of cardboard. Finally, _ the jar _ _.,with,with,turn,fill,cover,upside down,Read the text again and again till you can describe the content of the text by yourself . Learn to express sequence. Dont forget to preview the next lesson.,Thank you for your presence and guidance!Good-Bye,

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