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Produce:Wang Jiangling Shuguang Middle School I. Introduction • Sanbei shelter-forest(三北 防护林 )is known as China’s “Great Green Wall”.It is a “Great Green Wall” of trees, millions of trees.China has built a new Great Green Wall across the northern part,including InnerMongolia ,Shanxi,Hebei,Beijing and Tianjin. # The Great Green Wall also covers some of the northwest and the west -ern part of the North - east.It includes altogther 13 provinces,cities and autonomous regions.Its total area is 4,096,000 square kilometres,which cover half of the land of China.The building of the Great Green Wall will take 73 years(1978- 2050). • The Great Green Wall has already saved a lot of land by stopping the wind from blowing the earth away and the sand from moving towards the rich farmland in the south.But more “Great Green Wall ” are still needed and not only in China.They must be built all over the world. II. Read the text and grasp the main idea of each paragragh Key words paragrap1 Paragragh2-3 Paragragh4-6 About paragragh 1 1.How do forests help prevent drought? Forests help to keep water from running away so that drought doesn’t often happen.2.How can forests prevent floods? Keep…from doing , the dead leaves, the water is used by the trees in the forests. Main idea “The importance of forests” 1.What does “the Great Green Wall” mean? About paragraph 2-3 It is a “Great Wall” of trees, millions of trees. 2.Why does China built the Great Grean Wall? Chinese people don’t want to see more floods and droughts.3.How long and how wide is the Wall? 7,000 kilometers long,and between 400and 1,700 kilometers wide Main idea: “Something about the Great Grean Wall” About paragragh 3 - 6 1.How did Wang Feng feel when he was talking about their future in Yulin Those mountains will all be covered with trees and the people will have the better harvest. He felt proud of the good results and had confidence in the future. 2.What will happen to the mountains and people’s lives there in a few years’ time? Main idea:What Wang Feng thinks about the Great Green Wall and his work iii.Language points1.Have you ever heard of the Great Green Wall? 辩析： hear ,hear of 与 hear from （ 1） a. hear：听见 e.g. She can’t hear very well. We listened but could hear nothing. Have you ever heard that song sung in Italian? b. 听说，后可跟从句I heard that he was ill. I heard that it’s a good film.(2)hear of: 听说，听到，后跟名词或代词 I’ve never heard of that place. Have you ever heard of that story? (3)hear from…: 收到……来信。 How often do you hear from your sister? 2.Forests help to keep water from running away, so drought does not often happen. (1)a. Keep …from (sth./doing sth )使…不做（某事） =stop/prevent…from doing sth I mustn’t keep you from your work. 我不该打扰你的工作。 Can’t you keep him from fogetting? 你没办法使他记住吗？ The rain kept us from going out. 下雨使我们无法外出。 b.keep oneself from doing sth.克制自己不做某事。如： I could hardly keep myself from laughing. 我忍不住笑了出来。 I just managed to keep myself from failing. 我差点跌倒。 (2)run away: 流失，逃走，常与 from连用。如： Water ran away through the pipe. 水通过这条管子流出去了。 She hit the child and he ran away. 她打了这个小孩，于是这个小孩就逃跑了。 3. Chinese people do not want to see more floods and droughts, so they have to build a new Great Wall across the northern part of the country. 辨析： across,through and over a. 这些词都可作介词，表示“通过”的意 思。 Across的意思是“横过，穿过”，是指从物 体表面和上空横过。He walked across the road.他横穿马路 。 There is a bridge across the river.河上有一座桥。 (2)through 的意思是“穿过，通过”，表示从物体的中间穿过。如： The railway runs through several mountains. 那条铁路穿过好几座山。 Light comes in through the window . (3)over的意思是“横过，越过”，表示从某物体上方越过，或 在高形 物上穿过。表 示横过河流、街道或在某一长形物 的另一边时， 与 across相同 。 。 The boy ran over/across the road.小男孩跑过了马路。 A warm wind is blowing over the sea.暖风吹过海面。 Through Across Over (4)句中 the northern part of 相当于 the north of . South－－ southern(adj) East－－ eastern West－－ western Southeast－－ southeastern东南方的 4. The Great Green Wall is 7,000 kilometers long,and between 400 and 1,700 kilometers wide. 在英语中，表示计量的方法是： 数词＋ meters/kilometers+long/wide/deep/high/tall… 表示重量的方法是：数词＋ kilograms+heavy.如 ：The classroom is 4 metres wide.这个教室有 4米宽。 The river is about 10 meters deep. The box is about 5 kilograms heavy. How+long/wide/far…提问 6This year alone, we’ve already planted ten thousand trees (1)alone:adv仅仅，只有，用于名词或代词之后，同义词为 only The shoes alone cost 100 yuan. Time alone will tell.日久自明。 Hewill be remember for that one book alone. 仅仅那一本书就可以使他留名于世了。 (2)alone:adj 单独的，独一无二的，只作表语 I was alone in the house .我独自在房子里 I am not alone in this opinion.不只是我一个人有这想法 区别： lonely(感情上的寂寞孤独或之偏僻的地方可作定语和表语。 ) He lives alone,but he never feels lonely. They brought her into a lonely house. 6.He pointed to the high mountains far away. 辩析： point to与 point at Point to 的意思是“指向”，多用于指远方的东西 或方向； point at 的意思是“指着”用来指近处具体的东西。 如： He pointed to a tower on the dis tant horizon. 他指向远处地平线上的一座桥。 Shepointed to the house on the corner. “That,s the man who did it ,” she said ,pointing at me . The teacher is pointing at the map. 区别： faraway and far away. Faraway是形容词只可以 作 前置定语 .Far away 可用作状语、表语后置定语。如 Call me if you need me , I won’t be far away. He lives far away . My grandfather lives in a village far away. The faraway village is very beautiful. 7.But thanks to the Great Green Wall,the land produceds more crops. 但是多亏了绿色长城，地里产出更多的庄稼 。 (1)thanks to :多亏，由于，同义词为 because of .thanks to 后跟名词，在句中作状语，表示 原因，常位于句首或句末。。 Thanks to 常 有“感谢”的感情色彩，表示处于某种原因 才有了某种好结果。但 because of 物感情色 彩，只表理由。 Thanks to the doctor,the boy was saved. 多亏了大夫，那个男孩得救了。 Thanks to your help,I passed the exam. 多亏了你的帮助，我通过了这次考试。 We were successful thanks to your help. 由于你的帮助，我们成功了。 而 thanks for sth./doing sth.是指“因某事或某人做了 某事而感谢”。