英语：Unit4LookintoScienceLesson25课件（冀教版八年级下）.ppt

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 outsideB. 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 科学科学 experiment 实验实验;试验试验 theory 理论理论;学说学说 fill 装满装满jar 广口瓶广口瓶; 罐子罐子 upside 上部上部;上边上边prove 证实证实; 证明证明 observe 观察观察;监视监视scientific 科学的科学的 method 方法方法; 办法办法Fill in the blanks with the right words and the first letter is given.1. Lets do an e .2. Brian has one t and Danny has another.3. They can p whos right.4. I turn the jar u down.5. Please o carefully.xperimentheoryrovepsidebserveListen and answer1. What will Brain do?He will do an experiment1. Why does Danny say they should do this experiment outside?Because Danny thinks the floor will get wet. 2. Whats Brains theory? Brian is sure the floor wont get wet.QUESTIONS 1.用用把把装满装满 _ 2.用用把把盖住盖住 _3.我我(不不)确信确信 _4.正面朝上正面朝上 _5.把把翻转翻转_6.get wet _ 7.do an experiment _8.a piece of cardboard _9.inside（反义词）（反义词） _ 10.theory（复数）（复数） _11.careful (副词）副词）_ 11.science(形容词）形容词）_fillwithcover withI am (not) sureright side upturn upside down / turn over变湿变湿做一个实验做一个实验一块硬纸板一块硬纸板outsidetheoriescarefullyscientificWrite down the steps of doing the experiment1. Fill a jar with water.2. Cover the top with a piece of cardboard.3. Turn the jar upside down.What will happen ? You may sayIm sureIm not sure The floor will get wet.I think The floor wont get wetMaybe The cardboard can keep the water in the jar. fill with 用用装满装满 (主语是人主语是人) be full of / be filled with (主语是物或容器主语是物或容器)同义句转换。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。选择。5. Can you _ the box _ books? ( ) A fill ,with B full ,with C filled ,with D full , in6.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 AB学以致用学以致用upside down 的意思是的意思是“向下翻转过向下翻转过来来”. You hold the book upside down. 你把书拿倒了。你把书拿倒了。right side up 是是“正面朝上正面朝上”的意思的意思That picture is upside down.三、三、 Im sure the floor wont get wet. 我确信地板不会湿。我确信地板不会湿。b e sure 表示肯定表示肯定, 有把握有把握,而而be not sure 表示不确定表示不确定be sure/ be not sure 后可接句子，后可接句子，还可接代词、名词、还可接代词、名词、动名词或不定式。动名词或不定式。常见用法：常见用法： be sure of sb / doing sth , be sure to do sth完成下列各题。完成下列各题。1.我确信她会来。我确信她会来。_that she will come here.2.他没有把握通过考试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 withIm sureHes not sureC. . practise He _ the stockings _ christmas presents. （用（用装满）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）（倒着）我弟弟用一块玻璃盖住了那个杯子。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。我肯定他会来。_ _ _ he will come. filledwithDupside downcoveredwith I am sureNew words:science scientific experiment fill prove method theory jar observe Phrases :be filled with be full of cover with turn upside down Sentence Patterns:SUMMARY sb. be sure +that 从句从句sb. be not sure +疑问词引导的从句疑问词引导的从句First, _ a jar _ water.Then ,_ the top _ a piece of cardboard. Finally, _ the jar _ _. withwithturnfillcoverupside downRead 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.HOMEWORKThank you for your presence and guidance! Good-Bye