内容正文:
Unit 2 Topic 2 Section A
【学习目标】
1.谈论沙尘暴的成因,初步感知不定代词和不定副词的用法。
2.能够从所听材料中获取有效的细节信息,提高听力能力。
3.树立绿色环保意识,关注环境问题。
【预习导学】
一、生词速查
1. n.沙
2. conj.虽然,尽管,即使
二、短语速记
1. 猛烈地刮
2. 沿着大街走
3. 砍倒
4. 转换成;变成
5. 阻止
6. 刮走
7. 冲走
8. 绿色长城
9. 许多;大量
10. 作为结果
11. 形成
12. 灭绝
13. ……的重要性
三、句子速译
1.什么导致了这些沙尘暴?
What these sandstorms?
2.结果,许多富饶的良田变成了沙漠。
As a result, a lot of rich land desert.
3.树木可以防止风吹走尘土。
Trees can .
4.虽然以前有沙尘暴,但现在我们已经建成了“绿色长城”。
there were sandstorms before, now we “The Green Great Wall”.
四、想一想
预习课本1a,回答下列问题。
1.What's the weather like?
______________________________________________________________
2.What caused the sandstorms?
______________________________________________________________
3.What are the trees' functions?
______________________________________________________________
【答案】
一、
1.sand
2.although
二、
1.blow strongly
2.walk down the street
3.cut down
4.change into
5.stop...from...
6.blow away
7.wash away
8.The Green Great Wall
9.a large number of
10.as a result
11.come into being
12.die out
13.the importance of...
三、
1.causes
2.changed into
3.stop the wind from blowing the earth away
4.Although have built
四、
1.It's windy.
2.People cut down too many trees.
3.Trees can stop the wind from blowing the earth away, save the water and stop the water from washing the earth away.
【合作探究】
任务驱动一 复合不定代词练习
用适当的复合不定代词填空。
1.I am hungry.I want to eat.
2.—Do you want to say for yourself?
—No, I have to say.
3. is ready.We can start now.
4.Why not ask to help you?
5.—The story is so amazing.It's the most interesting story I've ever read.
—But I'm afraid it won't be liked by .
6.Lin Tao is new here, so he doesn't know .
◎学法指导:
不指明替代某个(些)人、某个(些)事物的代词叫不定代词。由some-、 any-、no-、 every-加上-one、-body、-thing连用, 构成复合不定代词。
任务驱动二 听力训练
1.听课本4的录音第一遍, 完成课本4A的活动,即圈出录音中出现的短语,训练获取特殊信息的能力。
圈出的短语有: 。
2.听课本4的录音第二遍,独立完成课本4B的活动。
(1)Now some kinds of animals are becoming .
(2)Some animals are dying out completel