1、Using Language Chemical or Organic Farming,Working the land,1.出國(guó)旅行時(shí)很激動(dòng)人心的。 2. 在這兒等也沒(méi)用，咱們走回去吧。 3. 我記得在哪兒見(jiàn)過(guò)他。,Travelling abroad can be very exciting .,Its no use waiting here,lets walk back.,I remember seeing her somewhere.,5. 即使最聰明的孩子，也需要指教。,4. 我后悔沒(méi)聽(tīng)你的勸告。,I regret not following your advice.,Even the

2、cleverest child needs teaching .,What do farmers usually put on the soil to make crops grow fast ? It is fertilizer.,How many kinds of fertilizers do farmers use? There are two kinds. They are chemical fertilizers and natural fertilizers .,Which kind do farmers use when they are doing organic farmin

3、g? Do you know about organic farming?,ORGANIC FARMING Organic farming is simply farming without using any chemicals.,Read the passage Underline the topic sentence of each paragraph. How many ways farmers use to help crops grow are mentioned in the passage,Comprehending,Long-term use of chemical fert

4、ilizers can cause damage to the land and peoples health.,Farmers and customers turn to organic farming.,Other methods to keep the soil fertile.,Problems caused by chemical fertilizers.,P1.,P2.,P3.,P4.,topic sentence,ways to help crops grow,Chemical fertilizers,use natural waste from animals as ferti

5、lizers,change the kind of crop in each field every few years,plant different crops with different lengths of roots,plant grass between crops and then leave it in the ground,organic farming,chemical fertilizers,advantage,disadvantage,a great way to stop crop disease and increase production,long tern

6、use of these fertilizers can cause damage to ,problems,damage_by_.,chemicals stay in _,affect _,lead to _,the land,killing the helpful,bacteria and pests and the harmful ones.,the ground and underground water,crops and animals and humans,?,The chemicals _,build uo in peoples bodies,cancer or other i

7、llesses,fruit ,vegetables and other food,Grow too fast to be full of much nutrition,organic farming What is organic farming ?,This makes the soil richer in minerals and so more fertile. This also keeps the air ,soil ,water and crops free from chemials.,without using any chemicals.,put important mine

8、rals back into the soil, making it ready for other crops that need rich and fertile soil,3 This uses different levels of soil.,4 This prevents wind or water from carrying away soil and acts as a natural fertilizer for the next years crop.,給造成損失 增強(qiáng); 建立；開(kāi)發(fā) 導(dǎo)致 轉(zhuǎn)向，求助于 關(guān)注，集中注意力于 使免于，擺脫 每隔幾年 阻止,cause dama

9、ge to,build up,lead to,turn to,focus on,keep free from,every few years,prevent from,Language points,1. lead to用法 寓詞于境 閱讀下列句子，注意lead to的意思和用法。 1. His carelessness led to the accident. 2. This test is obviously bad because it leads to incorrect learning. 自我歸納 lead to意為“_”, 后多跟名詞或代詞。,導(dǎo)致、造成(后果),3. Too m

10、uch work and too little rest often leads to illness.,過(guò)量的工作和過(guò)少的休息會(huì)引起疾病。,聯(lián)想 result in引起(某種結(jié)果)、使獲得(某種成果)、結(jié)果。如： The accident resulted in two deaths. result from由造成、因而產(chǎn)生。如： Sickness sometimes results from eating too much. 即學(xué)即練 用lead to的適當(dāng)形式完成句子。 1. Students should always remember that hard work is the ma

11、in way which _ success. 2. The bad weather _ a terrible accident a few days ago.,led to,leads to,3 They focus on keeping their soil rich and free of disease. focus on:集中(注意力，精力等）于 Olympus: Focus on life.奧林巴斯：瞄準(zhǔn)生活。,You should focus your attention on your work.,把注意力集中在你的工作上。,2. Focus your camera on th

12、ose trees. 3. Im so tired that I cant focus on anything today.,把照相機(jī)的焦點(diǎn)集中在那些樹(shù)上。 今天我太累了, 精神集中不起來(lái)。,focus作名詞, 意為“焦點(diǎn)、中心點(diǎn)”; Because of his strange clothes, he immediately became the focus of attention when he entered the office.,由于他的奇裝異服, 所以一走進(jìn)辦公室他便成了大家注意的焦點(diǎn)。,3. keep free from “遠(yuǎn)離”或“避免”,keep free from emo

13、tional reactions 避免激動(dòng)的反應(yīng) keep free from restrictions 避免受到限制,我們應(yīng)該使婦女兒童免受傷害和痛苦。 村民們已經(jīng)采取措施使小河無(wú)污染。,We should keep women and children free from harm and pain .,The villagers have taken measures to keep the river free of pollution .,4. These chemicals in the food supply build up in peoples bodies over time. build up 增強(qiáng); 建立；開(kāi)發(fā) build up a big library build uo a fine reputation