5分彩怎么买欢迎您的到來!

<p id="7zttv"><output id="7zttv"><menuitem id="7zttv"></menuitem></output></p>
<p id="7zttv"></p>
<p id="7zttv"></p>

<pre id="7zttv"></pre><p id="7zttv"></p>
<p id="7zttv"></p>

<p id="7zttv"><output id="7zttv"></output></p>

<p id="7zttv"><delect id="7zttv"><menuitem id="7zttv"></menuitem></delect></p><output id="7zttv"></output>
<pre id="7zttv"><output id="7zttv"></output></pre>
<pre id="7zttv"><output id="7zttv"></output></pre>

<pre id="7zttv"></pre>

<pre id="7zttv"><output id="7zttv"></output></pre><p id="7zttv"></p>


<p id="7zttv"></p><p id="7zttv"></p>

<p id="7zttv"></p>

<p id="7zttv"><output id="7zttv"><menuitem id="7zttv"></menuitem></output></p>

<noframes id="7zttv"><output id="7zttv"><output id="7zttv"></output></output>

<p id="7zttv"><delect id="7zttv"></delect></p>
四字詞語 口號 名人名言 順口溜 祝福語 短信 教學文檔 教學總結 教學反思 考研 自考 企業管理 營銷 人力 財務 個人創業 求職指南 廚藝教學 物業 管理文庫 謎語

當前位置:得優網教學文章免費教案英語教案高二英語教案英語教案-Senior 3 unit4 lesson15

英語教案-Senior 3 unit4 lesson15

    06-21 12:27:02    瀏覽次數: 509次    欄目:高二英語教案

標簽:人教版高二英語教案,高二英語教案下載,http://www.562527.site 英語教案-Senior 3 unit4 lesson15,

高三 Unit 4 Lesson 14

Step 1 Revision

1 Revise the dialogue in Lesson 13, paying special attention to intonation.

2 Check the Ss‘ dialogues.

Step 2 Discussion and presentation

SB Page 20, Part 1. Get Ss to talk about the picture and describe what they can see; Read aloud the questions, then put Ss into groups of four and get them to discuss these questions briefly. Ask different groups for their answers and write these on the Bb. Then say Now read the passage and find out. Allow the Ss enough time to read the text, then put them in pairs and get them to compare their answers. Collect the answers from the class. Answers:

1 It is being built on; it is being lost by the actions of the wind and the rain; land is becoming too salty.

2 You can increase the area of farmland by irrigation; you can build dams and water your fields; you can pump water from low-lying areas; you can develop new plants which produce heavier crops; you can develop new plants which grow in poor soil; you can develop new plants that are less likely to be attacked by pests and diseases.

Step 3 <?Reading

Ask the Ss more questions about the passage. Let them read the whole passage carefully and answer the questions, working in pairs or small groups. Check the answers with the whole class. This is a good time to deal with any language problems. See if the Ss can guess the meaning of salty, ruin, storage, day by day, etc.

Notes:

a Feed the world: In 1994, Professor Pimentel of Comell University warned of the following problems in providing enough food for the world’s growing population:

* By 2100 the population will be 12-15 billion, or seven times its sustainable level.

* Farmers are abandoning 25 million acres each year because of soil loss or waterlogging.

* The declining fertility of the soil will lower food production by 20% in the next 25 years.

* Topsoil is being lost 40 times faster than it can be replaced.

* Crop losses destroyed by pests have increased four times in the last 50 years.

b It is thought that: Note the use of the passive for introducing an idea.

c For one thing: This phrase is linked to The problem is... in the previous sentence. = One reason why it is difficult to feed the world‘s population is that...

d suitable for growing crops: Point out the structure: suitable +for + -ing

e And this area is becoming smaller day by day.

= And this area is becoming smaller every day. f it is being built on = buildings are being built on the land

g pests: insects or animals that destroy plants, food, etc.

h FAO: The Food and Agricultural Organization of the United Nations was founded in 1945 and has its headquarters in Rome. It has about 160 members. The purpose of the organization is to improve rural conditions, agricultural production and distribution, and to raise nutritional levels.

[1] [2] [3]  下一頁

5分彩怎么买 幸运飞艇全天计划 欢乐生肖实时计划 腾讯分分彩计划 幸运飞艇精准计划
<p id="7zttv"><output id="7zttv"><menuitem id="7zttv"></menuitem></output></p>
<p id="7zttv"></p>
<p id="7zttv"></p>

<pre id="7zttv"></pre><p id="7zttv"></p>
<p id="7zttv"></p>

<p id="7zttv"><output id="7zttv"></output></p>

<p id="7zttv"><delect id="7zttv"><menuitem id="7zttv"></menuitem></delect></p><output id="7zttv"></output>
<pre id="7zttv"><output id="7zttv"></output></pre>
<pre id="7zttv"><output id="7zttv"></output></pre>

<pre id="7zttv"></pre>

<pre id="7zttv"><output id="7zttv"></output></pre><p id="7zttv"></p>


<p id="7zttv"></p><p id="7zttv"></p>

<p id="7zttv"></p>

<p id="7zttv"><output id="7zttv"><menuitem id="7zttv"></menuitem></output></p>

<noframes id="7zttv"><output id="7zttv"><output id="7zttv"></output></output>

<p id="7zttv"><delect id="7zttv"></delect></p>