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1、 Unit 2 Topic 2 Section B Picking flowers is bad behavior.Talking about the behavior below pick the flowers spit anywhere in publicMake too much noisethrow rubbish step on the grassIs it good behavior ?Using the following words to fill in the blanks (1) of us need worry.(2) I knocked on the door but

2、 answered.(3) Some of these books are better than .(4) She was driving the car with one hand and wiping the window with the .Nonenobodyothersother(5) Its a good little car but I am looking for faster.(6) You cant believe she says.(7) Therere 5,000 people living here and almost has their own car.(8)

3、Hes cleverer than I know.(9) Ive looked but I cant find it.somethinganythingeveryone/everybodyanybodyeverywhere cut down trees many treespreventfrom = stopfromwash the earth awayforest gonesandstorms come into being change into desertsandDo you know the relations between trees, human beings and sand

4、storms? Number the pictures and then talk about them with your partner. 1 4 2 3 5 61) What is the weather like ? 2) What may cause sandstorm? 3) What can prevent water from washing the earth away? Listen to the tape answer the questionsThe wind is blowing strongly with lots of sand.People have cut d

5、own too many trees.Forests. Read 1a and make some notes.1b.Work aloneTrees can stop the wind from blowing the earth away.They can prevent the water from washing the earth away. be polluted water2.Read and understand Discuss different ways of saving water. Water is very important to human beings, but

6、 not everybody knows how to save it. As a student, what should you do?1.Pass laws against water pollution.2.Stop factories pouring waste water into rivers by cutting off their water supply.3.Remember to turn the tap off when you leave.4.Collect and reuse waste water. Language points1.A lot of rich l

7、and has changed into desert. A lot of 許多，許多， 大量。相當(dāng)于大量。相當(dāng)于lots of. 即可修即可修飾可數(shù)名詞又可修飾不可數(shù)名詞。修飾不可飾可數(shù)名詞又可修飾不可數(shù)名詞。修飾不可數(shù)名詞時相當(dāng)于數(shù)名詞時相當(dāng)于a great deal of. We have a lot of (a great deal of ) work to do. Change .into 把把 變成變成. Change rich land into desert. 2. Trees can stop the wind from blowing the earth away. sto

8、pprevent . from doing sth. keep 阻止做某事 Eg. My mother often stops me from watching TV at home.3. Although we have built the Great Green Wall, we still need to work hard to protect the environment. Although 盡管盡管,雖然雖然相當(dāng)于相當(dāng)于though， 引導(dǎo)讓步狀語從句。引導(dǎo)讓步狀語從句。 不能和不能和but連用。連用。Although my uncle is old, he looks very

9、 strong and healthy. 4.It caused Harbin City to cut off its water supply for five days. cause sb. to do sth. 引導(dǎo)引導(dǎo)/引起某人做某事引起某人做某事. What caused his illness? cut off 中斷，中斷， 切斷。切斷。We were cut off in the middle of our conversation. cut down 砍伐砍伐Do not cut down the tree that gives you shade. 【諺】【諺】遮蔭之樹不可砍

10、。遮蔭之樹不可砍。課堂練習(xí)課堂練習(xí)1. Our teacher have told us _ the trees. A. cut off B. cut down C. not to cut off D. not to cut down2. _ they can swim, _ they never go swimming alone. A. Although, but B. Though, but C. Although, / D. Because , so 3.The policemen tried to prevent traffic accidents _ happening. A. f

11、rom B. in C. to D. with 4.He didnt cross the road until the red traffic lights changed _ green ones.A.to B. into C. for D. in 5._ bad weather! We have to stay at. home.A. What a B. How C. How a D. What PROJECT 1.Water is very important to human beings. Now please talk about the following questions: Whats the importance of water? How should we save water? Why do we save water? Whats the importance of saving water?2. Homework:(1) Find out more information about water. (2) Try to find more ways of saving water. Give some advice on how to save water.