冀教版九年级英语Unit 5 Lesson25《Let's Do an Experiment》(共20张PPT).ppt

1、Unit 5Look into Science!Lesson 25 Lets Do an Experiment!1.To listen and understand the dialogue2.To learn some useful words and expressions ObjectivesThe new words:experiment,jar,upside,pour,correct,scientific,method,raincoat,force,pressure,conclude1)get 的用法及短语：get warm,get along/on/well with,get aw

2、ay from,get back,get in,get off get up,get together,get through,get to2)sb,be sure+that 从句。“认为一定”3)observe sb.do sth.observe doing sth.Wordsexperimentjarupsidepourcorrectscientificmethodraincoatforcepressureconcluden.实验；试验n.广口瓶；罐子n.上部；上边v.倒出；倾倒adj.正确的；恰当的adj.科学的n.方法；办法n.雨衣n.力量 v.迫使；强迫n.压力；压强；挤压v.得出结

3、论；断定；推断出What is a fairy tale?A fairy tale is a story that often has characters like fairies,dwarfs,giants or mermaids.What kinds of experiments have you done in science class?A fairy tale is a story that often has characters like fairies,dwarfs,giants or mermaids.A fairy tale is a story that often h

4、as characters like fairies,dwarfs,giants or mermaids.If you hold a jar that is filled with water upside down,what will happen?1.What experiment is Brain going to do?2.Whats Dannys theory about what will happen?Now Danny,Jenny and Brian are in the lab.fillwithcover withI am(not)sureright side upturn

5、upside down/turn over变湿做一个实验一块硬纸板outsidetheoriescarefully1.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）_Read the text and finish off these exercises.scientificdo an experimentfill A with Bc

6、over A with Bturn.upside downtake.off.get wet/hurt/.形容词pour outscientific methodbe sure of sth.be sure to do sth.the force of the air/air pressureconclude/make a conclusion做实验用B装满A用B盖住A把.倒过来把.拿开变湿涌出科学方法对.有把握一定做某事大气压力得出结论Write down the steps of doing the experiment1.Fill a jar with water.2.Cover the

7、top with a piece of cardboard.3.Turn the jar upside down.4.Take your hand off the cardboard.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.一、I fill a jar with water.我用水把瓶子装满。fill with 用装满 (主语是人)be

8、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 filled,with D full,in6.The child _ all the bowls _ water.()A fill

9、,with B fills,with C is full,with D is filled,with are filled with is full of AB学以致用意为“用覆盖”如：1.cover with My mother covered the table with cloth.我妈妈用布把桌子盖住了。二.I turn the jar upside down.我把广口瓶倒置。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 upsi

10、de down.3.be sure of意为“对有把握”，介词of后加名词或代词作宾语。如：Are you sure of this matter?你对这件事情有把握吗？学以致用三、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.2.

11、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句中的enough to do意为“足以做某事”，这里的enough起副词作用，用在形容词或副词后作状语。3.It is strong enough to hold the water.Allan is old enough to go to work.艾伦到上班年龄了。1.我确信你是一个诚实的人。I _ _ that you are an honest man.2.请用一块玻

12、璃盖上那个杯子。Please _ the cup _ a piece of glass.3.小心，否则你会弄湿的。Be careful,or youll _ _.4.把箱子倒过来，你会找到标签的。_ the box _ _,then youll find the label.III.根据所给汉语意思翻译下列句子。am surecover withget wetTurn upside downlNew words:lscience scientific experiment fill prove method theory jar observe lPhrases:lbe filled with

13、 be full of cover with turn upside down lSentence Patterns:SUMMARY sb.be sure+that 从句sb.be not sure+疑问词引导的从句First,_ a jar _ water.Next,_ the top _ a piece of cardboard.Then,_ the jar _ _.Finally,_the hand _the cardboard.withwithturnfillcoverupside downtake offlRead the text again and again till you can describe the content of the text by yourself.lLearn to express sequence.lDont forget to preview the next lesson.HOMEWORKThank you for your presence and guidance!Good-Bye