Unit2Topic2SectionA
Unit 2 Topic 2 Section A
P35 第 1课时
课型：新授课时间：2016.10.19 备课人：王玉英,杨静,刘永波
一、自主学习
（一）学习目标：
1.学习新单词和短语 sand, cut down, as a result, change into, stop …from,
be harmful to ,human being, although.
The indefinite pronoun and adverb :(不定代词和不定副词)
somebody, someone, something, somewhere,anybody, anyone, anything,
anywhere,none, nobody, nothing, nowhere,everybody, everyone, everything,
everywhere
2.学习沙尘暴形成的原因和树木的作用.
3.了解树木的作用之后,让我们共同树立保护树木,不滥筏树木的意识.
(二)学习重点:学习沙尘暴形成的原因和树木的作用.
（三）学习难点: Master the phrases: cut down, as a result, change into,
stop …from, be harmful to ,although,something,anything.
（四）自学检测读1a，在文中划出并翻译下面的短语.
1.猛烈地吹 ____________________
2.造成沙尘暴______________________________________
3.
4.结果____________________________________________
5.大量富饶的土地__________________________________
6.变成沙漠________________________________________
7.阻止大风刮走泥土_______________________________
8.阻止流水冲走泥土_______________________________
9.对人类有害_____________________________________
10.绿色长城_______________________________________
11.需要做某事_____________________________________
12.保护环境 ______________________________________
（五）我发现与生成的问题有：
1.
2.
3.
二、教师精导
（一）读1a，回答1b.
（二）在文中划出下面的句子并分析.
1.What bad weather! 译：___________________________
总结：What引导的感叹句:
a. What+形容词+不可数名词/可数名词复数！
b. What+ a/an+形容词+可数名词单数！
练习：1）多么繁忙的一天呀！
2）多么美丽的花呀！
2.As a result, a lot of rich land has changed into desert.译：
________________________________________
点拨：change …into…（把…变成…）= turn… into…
练习：1)寒冷能使水变成冰。Cold ________ ________ water ________ ice.
2)他们正在使沙漠变成农田。They ________ ________ desert ______farm
land.
3.Trees can also stop the wind from blowing the earth away. 译：
________________________
点拨：stop sb./sth. (from) doing sth. 阻止…做某事(from可以省略)
= prevent sb./sth. from doing sth.= keep sb./sth. from doing sth.
阻止…做某事（from不能省略）
练习：They can also prevent/keep the water from washing the earth away. 译：____________________
Stop factories pouring waste water into rivers.
译：_________________________________
4.Cutting down trees is harmful to human beings, animals and plants.
译：________________________________
思考：cutting down trees是动名词短语在句子中作主语，谓语用______数。
练习：1)散步是我的爱好。 my hobby.
2)踢足球很有趣。 interesting.
5.Although we have built “The Great Green Wall”, we still need to work hard to protect the environment.
译：_________________________________________________________________ 点拨：although 是词，有“虽然，尽管”和“不过，然而”两层意思，引导状语从句，
可以和互换，although 较正式，更为口语化，使用更普遍些。
注意：although 引导让步状语从句时，主句中不能与but, however同时连用，但可与yet（另一句句首）, still（另一句行前系后）连用。
练习：虽然他老了，但是他仍然努力工作。
译：_________ he is old, he is _________ working hard.
=He is old, _________he is working hard.
=_________ he is old, _________he is working hard.
(三)读1a，完成1c.树木的作用：
A.
C.
（）1.What weather !Let’s go for a pinic.
( )2.We should _____ humans______destroying the environment.
A.keep . by
B. stop. to
C.prevent. by
D.stop. from
( )3.1.I have ____ to tell you.
A.important something
B. something important
C. important anything
D.important anything
( )4. he was ill, _____ he still came to school.
( )5.My hometown has changed a new one in the last three years.
A .in
B to
C .with D. into
四、课后反思：
我的问题还有：
我的解决途径：
五、课后作业：
Finish Section A in your workbook on Page 35.