lesson25(2)修改课件.ppt

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1、Lesson 25 Lets Do an Experiment昭仁中学昭仁中学杨雪艳杨雪艳experiment n. 实验；试验实验；试验vAn experiment shows what happens.theory n. 理论；学说理论；学说vA theory is an idea.jar n.广口瓶；罐子广口瓶；罐子fill v.装满装满vPlease fill the jar with water.upside n.上部；上边上部；上边prove v.证实；证明证实；证明vLets do an experiment and prove whos right.observe v.观察；监

2、视观察；监视vPlease observe carefully what I do.scientific adj.科学的科学的method n.方法；办法方法；办法vThats called the scientific method.vexperiment 实验；试验实验；试验vtheory 理论；学说理论；学说vjar 广口瓶；罐子广口瓶；罐子vfill 装满装满vupside 上部；上边上部；上边vprove 证实；证明证实；证明vobserve 观察；监视观察；监视vscientific 科学的科学的vmethod 方法；办法方法；办法Fill in the blank with th

3、e proper word. The first letter is given.v1. Lets do the e and see whatv happens.v2. A “t ” is an idea and predicts whatv will happen.v3. We can p whos right.v4. Turn the jar u down and we can seev what will happen.v5. “O ” is another way of sayingv “watch carefully”.xperimentheoryrovepsidebserveLis

4、ten to the tape and answer the following questions.v1.Whats Dannys theory? v2.Whats Brians theory? Danny thinks the floor will get wet. Brian thinks the floor wont get wet. Lets do an interesting experiment. First, I _ a jar _a desk, _it _ water, then _the top _ a piece of cardboard. When I _the jar

5、 _ _, can you guess what will happen? putonfillwithcoverwithturnupsidedownMain Sentences 1. I fill a jar with water. 我用水把瓶子装满。我用水把瓶子装满。 fill with用用装满装满 He has filled his case with many books. 他已经把书装满了箱子。他已经把书装满了箱子。 coverwith 用用盖住盖住4. Well do the experiment and observed what will happen.我们将做这个实验并观察会发

6、生什么情况。我们将做这个实验并观察会发生什么情况。 observed 动词动词, “观察观察”。 observe sb. do/ doing sth. 如：如： I observed her dance.When I passed by the grass, I observed himWalking.be sure +that 从句表示从句表示“认为认为一定一定” 而而be not sure 表示不确定表示不确定.e.g. Im sure she will come here. 我确我确信她会来。信她会来。 Im not sure when hell come here. 我我不能肯定什么时候来这儿。不能肯定什么时候来这儿。3. Im sure the floor wont get wet. 我确信地板不会湿。我确信地板不会湿。2. I turn the jar upside down. 我把广口瓶倒置。我把广口瓶倒置。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Homework:Do the experiment with your friends inyour home.