人教高中英语必修4Unit2WorkingthelandUsinglanguage

Besides using the natural waste from animals, organic farmers also have other methods to keep the soil __r_ic_h___. One of the methods is to c_h_a_n_g_e___ the kind of crop in each field every few __y_e_a_r_s_. Another method is to plant
Chemical or Organic Farming?
Your answer is? organic farming!
动物粪便
7. organic farming 有机耕作
8. crop disease 农作物病害 9. bacteria 细菌 10. pest 害虫，害鸟
16. keep …free from…
使…免受…，使 …不含
17. different levels of land
不同层次的土壤
The farmers are _f_e_rt_il_iz_i_n_g____. The farmer in the first picture is using _c_h_e_m_i_ca_l_f_e_r_ti_li_ze_r_s,
With these discoveries, farmers and customers turn to _o_rg_a_n_i_c___ farming, which is farming w__it_h_o_u_t__ using any chemicals. Instead, organic farmers prefer using _n_a_t_u_ra_l_w__a_st_e___ from animals as fertilizer. The natural waste from animals not only makes the soil richer in _m__in_e_r_a_ls___ and more _f_e_rt_i_le___ but also keeps the air, soil, water and crops free from c_h_e_m__ic_a_l_s_.
A. make the soil richer in minerals B. make the soil more fertile C. keep the crops free from chemicals D. kill the helpful bacteria.
Read Para.4 and answer the following questions. 1. What other methods are used to keep the soil fertile by the organic farmers?
w_a_t_e_r__ thanv_it_a_m_i_n_s and _m_i_n_er_a_l_s.
Read Para.3 and answer the following questions. 1. What is organic farming?
Organic farming is simply farming without using any
crops to use different __l_e_v_e_ls_ of soil. What's more, planting _g_r_a_s_s__ between crops XXX be helpful to prevent wind or water from carrying away the ___so_i_l_.
pests as well as the harmful ones. …stay…. affects… 2. How do the chemical fertilizers damge people's health?
The chemicals in the food supply build up in people's bodies
Read Para.1 and answer the following questions. 1. Why do many farmers use chemical fertilizers in farming?
Because they think that chemical fertilizers can stop crop disease and increase production. 2. Is it really a good way to use the chemical fertilizers? Why? No, it isn't. Because the long-term use of the chemical fertilizers can cause damage to the land and people's health.
Firstly, the chemical fertilizers _d_a_m_a_g__e_ the land by k__il_li_n_g_
the helpful bacteria and pests. Secondly, these chemicals in the
food supply _b_u_i_ld___u_p_ in people's bodies and then lead to _ca_n__c_e_r or other i_l_ln_e_s_s_e_s_. In addition, fruit, vegetables and other food grown with chemical fertilizers usually growt_o_o___ fast _to_____ be full of n_u_t_ri_t_io_n_____. These food has more _w__a_te_r_ than vitamins and m__i_n_e_r_a_ls___.
Para.3
C. Problems caused by chemical
fertilizers.
Para.4
D. Long-term use of chemical fertilizers
can cause damage to the land and
people's health.
Detailed reading
while the farmers in the second picture are using _fa_r_m__ya_r_d_ manure
Which kind of fertilizers do many farmers use more now?
Which kind of fertilizers do you think is better?
3. fertilizer 肥料
13. nutrition 营养
4. chemical fertilizer 化学肥料 14. mineral 矿物，矿石
5. farmyard manure 农家肥 15. natural waste from animals
6. chemical farming 化学耕作
Skimming（3mins）
Match the main idea with each paragraph.
Para.1
A. Other methods to keep the soil fertile.
Para.2
B. Farmers and customers turn to
organic farming.
chemicals. 2. What do the organic farmers use as fertilizer?
They often prefer using natural waste from animals
as fertilizer. 3. The natural waste from animals can not _D________.
The same goal of these many different organic methods is to grow ______g_o_odfood and avoid ____d_a_m_a_g_intghe environment or people's ____h_e_a_l.th
(1)They oftenc_h_a_n_g_e_t_h_e_k_i_n_d_o_f_c_r_o_p__in__ea_c_h__fi_e_ld_ every few years (2)Organic farmers also p_l_a_n_t _c_ro_p_s__to__u_se__d_if_f_e_re_n_t_l_evels of soil. (3)Some organic farmers prefer _p_la_n_t_in_g__g_r_as_s__b_et_w_e_en crops.
many of which can lead to cancer and other illnesses. 3. Is the food grown with chemical fertilizers full of much nutrition? No, it isn't. In fact, inside the food there is more
对…造成破坏或危害
Read Para.2 and answer the following questions. 1. How do the chemical fertilizers damage the land? They damage the land by killing the helpful bacteria and
Book4 Unit2 Using Language
Chemical Or Organic Farming? (P14)
New words and expressions:
1. fertile 肥沃的
11. build up 逐渐增强，堆积
2. fertilize 施肥
12. long-term use 长期使用
Chemical fertilizers
farmyard manure
Chemical Or Organ the writer XXX talk about in the passage?
(If you were the writer, what XXX you write in the passage?)
2. What is the same goal of the organic farming methods? To grow good food and avoid damaging the
environment or people's health.
Summary:
Over the past half century, many farmers use the
_ch__e_m_i_c_a_l_f_e_r_ti_li_z_e_rs to stop crop d_i_s_e_a_se__ and increase _p_ro_d__u_c_ti_o_n_____. However, the l_o_n_g_-_t_e_r_m___ use of these
fertilizes can cause many problems.