新冀教版九年級英語上冊第25課課件

Look into Science Unit 5 Lesson 25 Lets Do an Experiment! Think about it! 1. What kinds of experiments have you done in science class? 2. If you hold a jar that is filled with water upside down, what will happen? * Why does Danny say they should do this experiment outside? * What will Brian do? * Does Danny have the same theory as Brians? Read the dialogue with the following questions. Work in groups and think of this experiment. Discuss it and write down how we do it. Step 1 Preparation: Make a list of the materials and tools that we will use in the experiment. Water, a jar, a piece of cardboard. Step 2 Theories: Write down two different theories. 1. The floor will get wet. 2. The floor wont get wet. Step 3 Main steps: Write down the steps of doing the experiment. 1. Fill a jar with water. 2. Cover the top with a piece of cardboard. 3. Turn the jar upside down. Step 4 Result: Write down the result of the experiment. The force of air will keep the water in the jar. How do we do the experiment? Lets do an interesting experiment. First, I _ a jar _ a desk, _ it _ water, then _the top _ a piece of cardboard. When I _the jar _ _, can you guess what will happen? put on fill with cover with turn upside down 1. I fill a jar with water. 我用水把瓶子裝滿。 fill with 用 裝滿 He has filled his case with many books. 他已經(jīng)把書裝滿了箱子。 coverwith 用 蓋住 I cover the top with a piece of cardboard. 2. I turn the jar upside down. 我把廣口瓶倒置。 upside down 的意思是 “向下翻轉(zhuǎn)過來 ”。 You hold the book upside down. 你把書拿倒了。 right side up 是 “正面朝上 ”的意思。 3. Im sure the floor wont get wet. 我確信地板不會濕。 be sure +that 從句表示“ 認(rèn)為 一定 ”。 而 be not sure表示 不確定 。 eg. Im sure she will come here. 我確信她會來。 Im not sure when hell come here. 我不能肯定他什么時候來這兒。 4. Well do the experiment and observed what will happen. 我們將做這個實(shí)驗(yàn)并觀察會發(fā)生什么情況。 observed 動詞 , “觀察” observe sb. do/ doing sth. 如： I observed her dance. When I passed by the grass, I observed him walking. 根據(jù)句意及首字母提示完成下列句子。 1. Do you often do e _ in your physics class? 2. Ill p _ that what he said is right. 3. He likes to read books about s _. 4. Mr. Smart sat in a corner and o _ what was going on with this little aunt. xperiments rove cience bserved 選擇與畫線部分意思相同或相近的詞。 1. Is the theory right or wrong? A. idea B. way C. mind D. answer 2. Dont turn the bottle upside down. A. away B. off C. up D. over 3. When I do the experiment, you must watch closely. A. learn B. know C. see D. observe 4. - Excuse me! May I ask you a question? - Certainly. A. No B. Sorry C. Sure D. Thanks 請根據(jù)課文內(nèi)容 , 以 “ An Interesting Experiment”為題寫一篇小作文。