高中英语-unit 2 using language 最终版

Chemical or Organic farming +in Shanghai
Organic farming in America
How to practice Organic Farming
Skimming I. Find the topic sentence for ach paragraph (The main idea of each paragraph) P1. Long-term use of chemical fertilizers can
【拓展】
confused adj. (人感到)糊涂的，迷惑的 be/get confused about... 对……感到困惑 confusing adj. 令人迷惑的 confusion n. 不确定，困惑
His __c_o_n_f_u_s_e_d_expression showed that he was _co_n__fu_s_e_d__ by the __co_n__fu_s_i_n_g problems.
To grow good food and to avoid damaging the environment or people’s health.
Paragraph I
Over the past half century, _u_si_n_g_(use) chemical fertilizers has become very common in farming. Many farmers welcomed them _a_s_ a great way to stop crop disease and increase p_r_o_d_u_c_t_io_n_ (produce). Recently, however, scientists have been f_in__d_in_g_(find) that longterm use of these fertilizers can cause damage to the land and, even more dangerous, _t_o_ people's health.
词语链接
lead to 导致；造成(后果)；通往 lead sb.to someplace 把某人带到某地 lead sb.to do sth. 使某人做某事 be in the lead/ take the lead 领先
All roads lead to Rome. 条条大道通罗马。
懒惰会导致失败而成功往往在于辛勤的工作。 Laziness leads to failure while success lies in hard work.
2. as well as (1)也；还
Computer, as well as the telephones, is an important part in daily communication.
(2) 除…之外 （后面一般接动名词/名词）
As well as knowing some Japanese, she also speaks English well.
Para 1:
1. Why are chemical fertilizers so popular in farming today?
They are a great way to stop crop disease and increase production.(Para 1)
Para 2
2. What problems can be caused by using chemical fertilizers?
Scanning 3. What is organic farming? （Para 3）
Organic farming means growing crops without using any chemicals.
4. What is the main goal for using organic farming methods? (Para 4)
ORGANIC FARMING
Definition: Organic farming is simply farming without using any chemicals.
Step III. Reading & Comprehending
CHEMICAL OR ORGANIC FARMING?
crops but cannot just be washed off.
Paragraph II (2)
These chemicals in the food supply build u__p in people's bodies _o_v_e_r time. Many of these chemicals can lead to cancer or other _ill_n_e_s_s_e_s(ill). In addition, fruit, vegetables and other food g_r_o_w__n (grow) with chemical _fe_r_ti_li_z_e_rs_(fertile) usually grow _to_o_ fast to be full of much nutrition. They may look beautiful, _b_u_t inside there is usually m__o_r_e water than vitamins and minerals.
① First, they damage the land by killing the helpful bacteria and …to cancer or other illnesses.
②In addition, …Food grown with chemical fertilizers
look beautiful, but inside there is usually more water than vitamins and minerals.
Paragraph II (1) 七处错误（可增减）
What is some of the problems caused by chemical are
fertilizers? First, they damage the land by killed the
killing
helpful bacterium and pests as well as the harmful one.
in addition to… “除...以外” 后面接：名词/代词/动名词
She can speak French and Japanese in addition to English.
Paragraph III (1)
With these d_is_c_o_v_e_r_ie_s_(discover), some farmers and many customers are beginning to turn _to_ organic farming. Organic farming is s_i_m_p_l_y_(simple) farming _w_i_th_o_u_t_ using any chemicals. They focus on k_e_e_p_i_n_g_(keep) their soil rich and free o_f_/_fr_o_m_ disease. A healthy soil reduces disease and helps crops grow strong and healthy.
Using Language： Chemical or Organic farming?
Background Questions
1. What is the substance we put on the soil which makes crops grow?
It is fertilizer.
2. How many kinds of fertilizers do farmers use? There are two kinds. They are chemical fertilizers and natural ones.
Can you lead me to the post office?
What led you to think so?
5. in addition “另外，除此之外” 一般单独使用，有逗 号隔开。
I don’t like the colour. In addition, the size didn’t suit me.
(3) 和…一样好
He played the piano as well as his teacher did.
3. These chemicals in the food supply build up in people‘s bodies over time.
随着时间的推移，食物中的这些化学成分 会在人体中堆积。
1. confuse V. 搞乱; 混淆;使迷惑
Please don’t confuse Australia with Austria.
别把澳大利亚和奥地利混淆了。
They asked me so many questions that they confused me.
他们问我那么多问题把我都弄糊涂了。
Step II. Background Questions
3. Which kind of fertilizer do farmers use when they are doing organic farming?
How much do you know about organic farming?
build up 增强、增多；增进；建立；开发 (1)You need more protein to build you up. (2)He is now trying to build up a fine reputation.
他正在努力逐步赢得好的声誉。
要点
4讲．与M练any of these chemicals can lead to cancer or other illnesses. 许多这些化学药品会导致癌症或其它疾病的产生。
cause damage to the land and people’s health.
P2. Problems caused by chemical fertilizers.
P3. Farmers and customers turn to organic farming.
P4. Other methods to keep the soil fertile.
Paragraph III (2) 三处错误（可增减）
Organic farmers, therefore, often prefer use using
natural waste from animals as fertilizer. They feel
that this makes the soil in their fields rich in richer
minerals and so more fertile. This also keeps the
air, soil, water and crops free from chemistry
.
chemicals
6. turn to
(1)转向 His attention gradually turned to his family.
bacteria
ones
Chemicals also stay in the ground and underground
wanaitmeralfsor^aanlodnghtuimmaen. sT,hissinacafeffefecccthetesdmcircoaplss
and, get
therefore, inside the