仁爱科普版九年级上册Unit 2 Saving the earth. Topic 2 Section D 学案（含答案）

Unit 2 Topic 2 Section D
【学习目标】
1.复习本话题所学词汇、句型和语法。
2.通过wh-questions(如:what, why等),理解短文意思,读懂有关自然资源的文章。
3.通过对水资源现状的了解,认识到自然资源对人类的重要性,加入保护环境、珍惜资源的队伍中。
【预习导学】
一、生词速查
1.　　 v.防止,避免
2.　　 n.发现,找到→　　 n.发现→
　　 v.覆盖
3.　　 adj.缺水的;(口)渴的
4.　　 adv.几乎,将近
5.　　 n.法律,法令;定律
二、短语速记
1.大量　 　
2.解决问题　 　
3.一天天地　 　
4.被……覆盖　 　
5.短缺;缺少　 　
6.饮用水　 　
7.淡水　 　
三、句子速译
1.How can we avoid a serious water shortage
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2.But people's need for water is increasing day by day.
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3.While nearly 3/4 of the earth is covered with water, we are still short of drinking water.
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4.The sea seems to have the best answer.
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5.Let's try our best to save water and our planet.
______________________________________________________________
四、想一想
预习课本1a,展示几幅贫困地区人们缺乏生活用水的图片,让学生讨论下列问题。
1.Why are the people there short of water
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2.How can we avoid a serious water shortage
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【答案】
一、
1.avoid
2.discover　discovery　cover
3.thirsty
4.nearly
5.law
二、
1.plenty of
2.solve the problem
3.day by day
4.be covered with
5.be short of
6.drinking water
7.fresh water
三、
1.我们怎么才能避免水资源严重短缺
2.但人们对水的需求正与日俱增。
3.虽然地球表面近四分之三被水覆盖,但我们仍旧缺乏饮用水。
4.大海似乎有最好的答案。
5.让我们尽力节约水,挽救地球吧。
四、
1.Because the water there is seriously polluted.
2.We should save water and not waste it.We should also stop people polluting water.
【合作探究】
任务驱动一 重点归纳
　　独自完成课本Grammar部分的填空。
　　 of us likes pollution.
Don't spit 　　 in public.
　　 should care for wild animals and plant more trees.
We should do 　　 we can to protect the environment.
任务驱动二 阅读训练
1.读课文第一遍,用正确的顺序排列段落。(Key: 　　)
2.读课文第二遍,找出每一段的中心句。
第一段中心句:
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第二段中心句:
______________________________________________________________
第三段中心句
______________________________________________________________
3.读课文第三遍,回答课本1b的问题。
(1)Why is our world thirsty when 3/4 of the earth is covered with water
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(2)What can we do now to avoid the water shortage
______________________________________________________________
(3) What will be the best way to solve the problem in the future in the passage
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任务驱动三 小组讨论
1.小组讨论保护和节约水的不同方法,每组派代表进行全班展示。
Names Ways of protecting and saving water
　　2.写一篇校学生会发出的关于节约用水的倡议书。
My dear friends,
　　Water is very important to human beings.Let's do something to protect and save it.
First,Second,Third,
Let's try our best to save water and our planet.
【答案】
任务驱动一
None　anywhere　Everyone　everything
任务驱动二
1.3-2-1
2.Although the world is hungry, it is even thirstier.
How can we avoid a serious water shortage
The sea seems to have the best answer.
3.(1)Because about 97% of the water on the earth is sea water.we can't use it for watering plants or drinking directly.
(2)First, we should save water and not waste it.Second, we should protect our water resources and not pollute them.Third, we should discover ways to reuse water.
(3)To find cheaper ways of taking the salt away from the sea water.
任务驱动三
2.
My dear friends,
Water is very important to human beings.Let's do something to protect and save it.
First,we should protect our water resources and not pollute them.The government should also pass laws against the water pollution.Second, we should save water in our daily life, turn off the taps in time, take a shower instead of a bath, and always remember to collect and reuse water.Third, let's try to spread the message about protecting and saving water.Make more people around us know the problem of water shortage and how to help solve it.
Let's try our best to save water and our planet.
Student Union
【知识超市】
[命题点一]avoid的用法
●How can we avoid a serious water shortage 我们怎样避免严重的水短缺
◎观察思考:1.He has been avoiding me/my eyes all week.整整一个星期他一直在回避我/躲避我的目光。
2.We should avoid talking with strangers.我们应该避免与陌生人说话。
◎用法总结:avoid作动词,意为“防止;避免”。在用法上可以构成如下结构:
1.avoid sb./sth.,意为“避开某人/某事”。
2.avoid doing sth.,意为“避免做某事”。
对点自测
按要求完成下列句子
1.No one can be perfect and avoid 　　(make) mistakes, so what we can do is to learn something from them.(填空)
2.为了避免路上交通拥挤,有些人宁愿夜间驱车出行,白天休息。(翻译句子)
In order to 　　 on the roads, some people prefer to travel at night and rest during the day.
【答案】
1.making
2.avoid the heavy traffic
[命题点二]seem的用法
●The sea seems to have the best answer.大海似乎有最好的答案。
◎观察思考:1.Tom seems (to be)a very clever boy.汤姆看上去是一个很聪明的男孩。
2.Everything seems easy.一切似乎很容易。
3.The moon seems to change its shape.月亮好像在变换形状。
4.It seems that you were lying.看来你在说谎。
◎用法总结:seem用作连系动词或不及物动词,意为“似乎;好像;看来”。常用在以下结构中:
1.“主语+seem+(to be)+表语” 此时seem为连系动词,后直接接形容词或to be+形容词或名词(短语)作表语,以说明主语的特征或状态。
2.主语+seem+不定式
3.seem 常用于it作形式主语的“It seems /seemed that...”结构中。该结构中it作形式主语, “that ...”是真正的主语。
对点自测
把下列句子翻译成英语
1.他似乎病了。
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2.那似乎是个好主意。
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3.他好像生我们的气了。
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【答案】
1.He seems (to be) ill.
2.It seems (to be) a good idea.
3.It seems that he is angry with us.
2