牛津版上海版八年级下册Unit2Water教案.docx

1、牛津版上海版八年级下册Unit2Water教案U2 WaterThe first periodTeaching aims：Introduce the topic water. Ask students to work in pairs for a few minutes, and to write down anything they know about water. Ask 3 students to tell their answers and write them down on the black board. Then discuss their ideas briefly and

2、 do the exercises.Teaching Important Points :Try to know something about waterTeaching Procedures:1: A Free TalkWhat do you know about water* People can live without food for more than a month, but they can tlive without water for more than week. Losing more than 20% of the normal water content of o

3、ur bodies will result in a painful death.*About 65-70% of our bodies are water, so it is important for us to drink a lot of water. Each day, a normal person will drink about 2.4 liters of water or other drinks. In America, the average person will use 260 liters of water a day and on average, each pe

4、rson will drink 60, 600 liters of water in his/her life.*Some people believe that our emotions and mental stability are affected when there is a full moon because the gravitational pull of the moon affects the water in our bodies in the same way as it affects the ocean tides. Legends say that werewo

5、lves appear whenthere is a full moon.*You need more water during and after exercise because you lose water by sweating and you need to replace the water that is lost.*Water freezes at 0C (32 T ). When it freezes, it changes into ice. Water boils at 100C (212 T ) when it changes its form into a gas,

6、becoming steam.2: Look and think*Choose the write answer1You could live without water for a few .a days b weeks c hours2Your body needs about liters of water daily.a two b four c eight3When you exercise, the amount of water you need .a increases b decreases c remains the same4When you freeze water,

7、it becomes a .a liquid b solid c gas5About of the earth is covered by water.a one third b one half c two thirds6The scientific symbol for water is .a H2O b HO2 c H2O2*Use the picture to put these sentences in the correct order.( ) It flows to the sea.( ) It runs into streams and rivers.( ) It rises

8、from the sea to the sky.( ) Water falls from the clouds as rain.( ) It falls as rain again.Homework:Preview the text: Water talkThe second periodTeaching aims:1Try to understand the whole lesson and read it fluently. The tone and pronunciation should be basically right.2Learn the new words and phras

9、es.Teaching aids:Multimedia equipmentTeaching Important Points :How to understand the test completely .Teaching Difficult Points : Teaching Procedures:1: A Free talk(Ask two Ss to talk about some measures we use to save water and say the following.) T: Very good . Thank you for your performance.We h

10、ave learnt that water is very important and we don t have enoughwater in the world. If we don t have wateryinlifeo,utrhdeasilituationwill be terrible and we all will die. Some people in other places are suffering from lack of water, such as African people. We should treat every drop of water serious

11、ly and should no waster even a drop of water.Show the text on the screen then give brief introduction to the students and then let Ss read the new text after the recording .2: learn some new words.1brush n. 刷子，毛刷v. 刷，擦，拂拭 We brush our teeth with a toothbrush everyday.2pour v. 灌注，倾泻，涌入，流，倾盆大雨pour oil

12、 on the fire 火上加油 Tears poured from her eyes.People poured into he hall.Please pour me a cup of tea.At 5 o clock workers peodurout of the factories.It was pouring.3sink n. 水槽Ileft the soap by the side of the sink.v.使下沉The ship is sinking.4vanish v. 消失Forests are vanishing from our land.5drain n. 排水管

13、Your kitchen drain has become blocked by tea leaves.v. 排去The water drained away slowly.6freeze v. （使）结冰，凝固The terrible news froze my blood.freezing adj. 极冷的 frozen adj. 冻结的 frozen food7impatient adj. 不耐烦的，没耐心的 opp. patient 有耐心的I m getting impatient because I ve waited for an hour.patience n. 耐心，容忍Ih

14、ave no patience with him again.8obey v. 服从，顺从，听话They refused to obey (the order).9faint adj. 微弱的Did you hear the faint moan just now?10float adj. 漂浮，飘浮 Wood floats on water.11comfortably adv. 舒适的，舒服的comfortable adj. 安乐的，舒适的comfort n. 慰藉，安乐Ifeel very comfortable in this chair. The lovely baby was a c

15、omfort to her.12view n. 景色，风景 The house has a view over the sea.n. 看法，观点 What is your view on school punishments?13speed v. 加速 speed upn. 速度 at a speed of 80 miles an hourShe nodded to show that she agreed with me.n. 点头He greeted me with a nod.15relax v. 松弛，放松，休息After a day of hard work, I relaxed a

16、t home.16puzzled adj. 困惑的，疑惑的puzzle v. （使）迷惑，（使）为难，迷惑不解n. 难题，迷a crossword puzzleIwas puzzled how to do it.Their strange relationship puzzles me.17treatment n. 治疗，处理His treatment of the animal was cruel.hard treatment: 虐待 be under treatmen：t 在治疗中treat v. 对待，处理18thorough adj. 完全的，彻底的We d better have a

17、 thorough cleaning to welcome the Chinese New Year.thoroughly adv. 完全地，彻底地We have cleaned the house thoroughly to welcome the Chinese New Year.19chemical n. 化学制品They added a few chemicals to clean up the water.chemicalchemical adj. 化学的changechemistry n. 化学 She is out chemistry teacher.20sewage n. 污水

18、We can t let out sewage because it will pollute the water.21plant n. 工厂，仪器When the plant closed down, many workers lost their jobs.n. 植物v. 种植22pump v. 抽水Can you help to pump the water from the well?The heart pumps blood.n. 抽水机，打气筒23precious adj. 珍贵的，宝贵的Nothing is more precious than friendship.The be

19、autiful vase is very precious.24weird adj. 怪异的，奇怪的，不可思议的Tom had some weird ideas.3: PracticePlay the tape for students to listen and repeat, then answer some questions.4: Read and thinkComplete the following blanks.JUDY1 PETER Why was the voice impatient?Daisy was2PETER Why did Daisy nod her head?JU

20、DY she knew was.3PETER Why did the water go to a treatment works?JUDY it journey.4PETER Why did the water say, I ll be back in the sea again. ?JUDY it the sea place.5PETER Why did the water say it was like liquid gold?JUDY it believed that .6PETER Why did Benny think his sister was weird?JUDY she sa

21、id, 4: Explain the language Points :1look around: 向四周看I looked around and found there was no one in the street at all.2It is /was time to do sth. 是该的时候了，到时候了It is time to have lunch. 该吃饭了。It was time for him to stop his revenge.It is time to have a relax if there is no work to do.3finish doing sth.f

22、inish with sth. 完成某事Could I borrow the book when you have finished reading it?I have finished with all my homework.The work has not been finished yet. Another 3 days are needed to finish it.After finishing playing football, you can have a bath.4It is (not) + adj. + for sb. to do sth. 某人做某事(不)容易It is

23、 exciting for us to go to the movies.It is not easy for him to win the first prize.It is impossible for people to live on the sun.5get cleaned up = be cleaned upHomework:The third periodTeaching Aims:1 Review the new words and expressions and the grammatical points in the chapter2Do some ExercisesTe

24、aching Important Points :Master how to talk about amounts.Teaching Difficult Points :1 The different usage of a few, a little, few and little2How to understand the listening and the sequences of events.Teaching Procedures:1:Revision1 Show the new words of chapter 6 on. First ask a student to read al

25、oud, correct the wrong pronunciation, and then ask the whole class to read together.2Read the text after the tape to understand it better2:Ask student to do the vocabulary exercises C1, C2 and C3.3: ListeningPut the picture into right order.1One day, Suzy s mother gave he-ryuoanne coin. It was rathe

26、r dirty, so Suzy put it in the sink and washed it. When the coin was nice and clean, it suddenly started talking to Suzy.2 This listening is aimed at training students understanding of the order of the events. Ask the students to see how the drop travels in Water talk .3Play the recording once, whil

27、e students listen but do notWrite anything. Tell them to listen for the sense and the main points. Then replay the recording and students must complete the exercise. Replay it a third time，explaining any problems.4:Gramma: Learn how to talk about amounts1He took a few biscuits.He took a little butte

28、r.*Compare the two sentences and ask the students to discuss inpairs to tell the differences.* Explain that “ a little ” and meafew数量很少的,“ a few ”用于修饰可数名词 , “alittle 修”饰不可数名词，它们都表示肯定 的含义*a few = some, several a little = someeg. I want a little coffee.Give me a few apples.2He took few biscuits.He too

29、k little butter.*Compare the two sentences and ask the students to discuss in pairs to tell the differences.* Explain that “ few ” and “ little 数量少到几乎没有,“ few ”修饰可数名词，“little修饰不可数名词。都含有否定涵义。*few = not many little = not mucheg. Little of his time is spent on books. 他很少花时间在书本上。There are few eggs in th

30、e fridge, are they?冰 箱里几乎没有鸡蛋，是吗？3“ few ” , “ a few ” , “ little ”既可做形容词又可做代词。eg. - Do you want any coffee?- A little , please.quite a few = manyeg. I have collected quite a few stamps about the Olympics. (=many stamps)4“a little ”“ laittnled ” can be used as adv.eg. He talked little about his fathe

31、r. 他很少谈论他的父亲。It rained a little during the night. 夜里下了点雨。Time is very limited. Could you possibly drive _a little_ faster?There are about 50 guests coming. We need _a few_more chairs.Homework:The fourth periodTeaching Aims:1Review new words and expressions in the chapter2Further train students ability of talking about amounts3Do some ExercisesTeaching Important Points :Master the usage of a lot of, much, many, no, noneTeaching Difficult Points :1The different usage of a lot o