1、Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems. Section A,Words and Expressions,A: Where have you been/traveled?,B: I have been/traveled to .,Have you ever had a picnic?,Kangkang, Jane, Maria and Michael are planning a picnic for Sunday. They will go to the West Hill.,What ca
2、n you see there?,We can see bees and butterflies dancing.,bee,butterfly,Is the West Hill beautiful?,Guess,a place with,beautiful flowers,Brainstorm,many hills,green trees,What a shame/mess! The flowers and grass have gone!,The flowers and grass have gone!,Oh, my goodness. What a mess!,Look! There ar
3、e several chemical factories pouring waste water into the stream.,= have disappeared.,Is it beautiful now? What has happened there?,P27 1a mp3,waste water waste paperWaste water. 浪费水。 Dont waste paper. 不要浪费纸。,waste,adj.v.,There are several chemicalfactories pouring waste waterinto the stream.有几家化工厂正
4、在往小溪里排放废水。,There bedoing sth 有在做某事,e.g. There are some people waiting for the bus at the bus stop.,倒出；倾泻 pour into 把倒入 e.g. Pour red wine into the glass.,1b Listen to 1a and mark the words with P (Past) or N (Now)._ beautiful _ butterflies _ dirty _ grass _ terrible _ factory _ bees _ fresh _ clean
5、_waste water,P,P,N,P,N,N,P,P,P,N,1a Listen, look and say.,1c Read 1a and complete the sentences in the table. Then retell 1a to your partner.,beautiful place,lots of flowers and grass,fresh and the water was clean,bees and butterflies dancing,The flowers and grass,so dirty,terrible,chemical factorie
6、s,waste water,Everything,2 Work in pairs. Look at the pictures and make up conversations similar to the example with your partner.,Example: A: There were lots of flowers and grass when I visited the village last year. B: But now the flowers and grass have gone. A: What has happened here? B: The vill
7、agers have destroyed them.,lake/fish factory/ pollute,hill/ trees farmers/cut down,village/flowers and grass villagers/destroy,4 Work in groups and talk about pollution in a place you are familiar with. The following sentences may help you.ago, it was Now, have/ has gone. What has happened? Everythi
8、ng has changed. Oh, my goodness!,3 A. Listen to the sentences and number the pictures.,5,3,2,1,4,6,1. People _ _ _ too many trees, so I dont have enough leaves to eat. 2. I live in trees but now many trees _ _. 3. I like leaves and grass, but now they _ _. 4. I _ _ hungry for months because of less
9、bamboo. 5. Human polluted the sea, so I _ _ _. 6. The water _ _ many years ago. But it _ _ _ for me to live in now.,B. Listen again and complete the sentences.,have cut down,have gone,have disappeared,have been,dont live happily,was clean,is too dirty,Exercises,单项选择 ( ) 1. Look! There are some boys
10、_ on the playground.A. play football B. are playing footballC. playing football D. plays football ( ) 2. Im sorry I cant go shopping with you. I am ill. _A. What a mess! B. What a shame!C. What a pity! D. B and C ( ) 3. Dont _ water. We must save every drop of it. Sorry, I wont do it again.A. waste
11、B. throwC. play D. leave,C,D,A,Exercises,用所给动词的适当形式填空。 1. When I entered the room, I saw Maria _ (read) a Chinese book. 2. What a shame! The flowers and trees in the park _ (go). 3. Everything _ (change) in the past few years. 4. Pandas dont have enough bamboos _ (eat) now because of the pollution.
12、5. Where have they been? They _ (be) to the Great Wall. They _ (have) a good time there the day before yesterday.,reading,have gone,has changed,to eat,have been,had,summary,We learn:,1. Express exclamation:What a mess! What a shame! Oh, my goodness! 2. Know the differences between Simple Past and Pr
13、esent perfect.It was a beautiful place. Everything has changed.,We can:,1. Some words:bee, butterfly, mess, shame, several, pour, waste, destroy, pollute, goodness 2. Some phrases:see sb. doing sth. pourinto 3. Some sentences:There aredoing,Homework 1. Read 1a. 2. Write a passage according to Part 4. 3. Finish Section A in your workbook. 4. Preview Section B.,Thank you.,