冀教九上Unit5-Lesson26KeeptheCandleBurning教学课件.ppt

1、Unit 5 Look into ScienceLesson 26 Keep the Candle BurningThink about it!Do you think science is interesting?Why or why not?2.Name one or two famous Chinese scientists.What do you know about them?Lets do another experiment.Keep the Candle Burning.What do we need?a candle蜡烛a big glass jar玻璃罐子a candleh

2、older烛台a shallow dish with water浅的matches火柴a match一根火柴How do we do the experiment?Lets read the text and fill in the blanks.Lets do the experiment together!Put the candle in the candle holder.Put the candle holder on the dish.Fill the dish half full with water.Light the candle with aor a lighter.Wha

3、t can you see?The candle is burning._ the candle burn for two or three minutes.Then carefully put the jar _over it until the top of the jar rests on the dish.As the candle burns,itthe oxygen in the air.When the candle stops,it has used up all the oxygen in the air.The water inside the jarand fills a

4、bout of the jar.This is because about one fifth of the air is made up of oxygen.matchLetburningrisesWhat is happening?1)分数由分子和分母两局部构成。用英语表达时，分子用基数词，分母用序数词。2)如果分子为1，那么分母的序数词是单数形式，如果分子大于1，那么分母的序数词用复数形式。one(a)half 或 one second(one-second)=one(a)quarter 或 one-quarterHow to express the fractions:口 诀:分子基，

5、分母序。分子1，分母加s。二分之一三分之一四分之一四分之三五分之二十分之九a/one half (one second)one-third one quarterthree-fourths three quarterstwo-fifthsnine-tenths1.Practice the text in groups.2.Finish the exercise on page 69.Do the experiment what you want in groups.Read about the experiment in this lesson.With a group of classmat

6、es,practice the experiment.Do your experiment in front of the class.Dont forget the following things:First,describe your experiment.Second,ask the class what they think will happen.Third,do the experiment.Finally,ask the class if the result is what they expected.Write the progress in the experiment.

7、1.Listen and read.2.Finish exercises of this lesson.Homework What does life mean?生活是什么意思？What doesmean?=Whats the meaning of?=What do you mean by?是什么意思？Ms.Peng succeeds in singing.She is a successful singer.She is good to children.Yao Ming succeeds in playing basketball.He is a successful basketball

8、 player.He is deep in thought.They succeed in developing the relationship between China and the US.They are successful leaders.They will start a dialogue.What is the meaning of neighbours?Strangers Close friends Become famous.Have a happy family.Attend a good university.Make other people happy.Have

9、a satisfying job.Be rich.Listen to the passage and tick the sentences mentioned.Read the lesson and answer the questions.1.What is Li Ming thinking about?2.What does Wang Mei think we should do?3.What does Li Mings father always say?1.What is Li Ming thinking about?Wang Mei:Hi Li Ming.What are you t

10、hinking about?Li Ming:oh,hi Wang Mei.I was just thinking Whats the meaning of life?Do you ever wonder about that?He is thinking about what the meaning of life is.2.What does Wang Mei think we should do?She thinks we should try our best to live a good and happy life.Wang Mei:These are really importan

11、t questions and very difficult to answer.Im not sure how to answer them,but I think we should try our best to live a good and happy life.3.What does Li Mings father always say?He always says that we should be good to others.Li Ming:That sounds right to me.My dad always says that we should be good to

12、 others.After the history class,Li Ming sits in the classroom,deep in thought.deep in thought意为“深思,沉思,还可以用lost in thought表示。其中thought为名词,意为“思考,思索。thought是动词think的过去式和过去分词,意为“想,认为。What are you thinking about?think about意为“考虑,一般可与think of互换,后接名词、代词、动词-ing形式,也可接“疑问词+动词不定式结构或宾语从句think of意为“考虑,想起,认为,后接名词

13、、代词或动词-ing形式,常用于疑问句中,与what连用。think over意为“认真考虑,仔细考虑,后接名词或代词作宾语,当接代词时,应将代词放在think与over之间。What is the meaning of life?meaning为名词,意为“意思,意义。the meaning of意为“的意思/意义。(1)mean为动词,意为“意欲、打算。mean to do sth.意为“意欲/打算做某事。(2)询问“是什么意思?的常用句型:What doesmean?What is the meaning of?What do you mean by?Do you ever wonder

14、 about that?wonder在本句中用作不及物动词,后搭配介词about表示“想要知道,感到疑惑,觉得好奇,后搭配at表示“感到惊讶。(1)wonder作动词时,后常接由疑问词或whether,if引导的宾语从句及“疑问词+动词不定式的结构。(2)wonder还可作可数名词,意为“奇观,奇人。(3)wonder的形容词为wonderful,意为“极好的。That sounds right to me.sound为系动词,意为“听起来,后面常接形容词作表语,有时也可接like构成短语sound like,意为“听起来像。sound还可作名词,意为“声音,指自然界中所有的声音。My dad

15、 always says that we should be good to others.本句中that引导的宾语从句作says的宾语。be good to意为“对好/和蔼/慈祥,后接表示人或人格化的词,与be friendly to意思相同。(1)be good for意为“对有益,其反义短语为be bad for,意为“对有害。(2)be good at表示“擅长,在方面做得好,at后跟名词、代词或动名词。I agree.I agree.意为“我同意,是英语中的常用口语,表达同意对话者的意见。Lets write these questions down and then survey

16、our parents,friends and neighbours about their thoughts.write down意为“写下,记下,是由“动词+副词构成的短语。write down的宾语如果是名词,放在down前后均可;如果是代词,必须放在down之前。本句中的survey为及物动词,意为“(对做)民意调查。Read the lesson and fill in the blanks.After the history class,Li Ming is deep in thought.Wang Mei comes in,and they start a _.Li Ming w

17、onders about the _ of life.He has many questions about his purpose in life.Wang Mei thinks those questions are_ to answer.They decide to _ their questions _,and then _ their parents,friends and neighbours about their thoughts.dialoguemeaning difficultwritedownsurveyFill in the blanks with the correc

18、t forms of the words in the box.1.Work hard and you will be in the future.who he was,but nobody could tell me.3.What is the of your visit?4.One of our helped us look after our dog while we were away.500 people and 75%of them were in favour of the plan.successpurposesurveywonderneighboursuccessfulwon

19、deredpurposeneighbourssurveyedIts said that happy people can live longer.What do you need to be happy?Fill in the mind map.Then give a reason for each thing you list.SURVEY:What do you need to be happy?I need health to be happy.Reasons:We will live a good and happy life if we are healthy.I need _to be happy.Reasons:_ _.Writing:Write a short passage about your survey.Its said that happy people can live longer._.Homework:1.Finish the exercises in the activity book.2.Recite the new words.