课件16张PPT。Our goal for this class1. To develop the ability of speaking and reading comprehension;
2. To master the usage of some new words;
3. To know more about sandstorms and how to protect the environment ;
Module 4
Sandstorms in Asia
grassland, trees
clean freshRaise sheepCut downDig upDesertificationThick dust Sandstorms in Asia
Reading Comprehension skimmingMatch the parts with their main ideas.Part I (para 1) Part II (para2-5) Part Ⅲ (para6)major disaster in Asia- Sandstormmeasures description cause influence
suggestion Read the passage again and answer the following questions.1. What are sandstorms?
2. What is the desertification?
3. What would happen to traffic in sandstorms?
4. Why is cycling in a sandstorm is frightening?
skimmingFill in the formCause of desertificationSign of sandstormssuggestionsmeasures1_________changes
2____________ trees
3_________ grassClimate Cutting down Digging up orangethick and brown yellowoutto seewindsWear a maskPlanting treesLanguage pointsa major disaster
a mass campaign
be caught in
as a result of desertification
because of climate changes
cut down trees
dig up grass
all day
It’s difficult to do
make it difficult to see
wear a mask
a mass campaign
wake up to
advise sb not to do sth
1 一个主要灾害
2 一项大规模运动
3 被困于;突然遭遇
4 由于沙漠化
5 由于气候变化
6 砍树
7 挖草
8 一整天
9做……很难
10使看清变得困难
11戴口罩
12 一个大规模运动
13 开始察觉；认识到
14.建议某人不要做某事To have been caught in a sandstorm
was a terrible experience.
be caught in sth. :被困在…中
to have been caught in a sandstorm
不定式的完成时作主语，表示不定式动
作发生在句子谓语动作之前。
Sandstorms in China appear to have
increased in recent years.
appear to: 似乎，好象
我们老师昨天似乎生气了
Our teacher appeared to get angry
yesterday.
3 Because the thick dust makes it difficult to see.
make it + adj + to do sth :使…这里的it是形式宾语,to do sth. 是真正的宾语。
这本书使我们很容易明白这个问题。
This book makes it easier for us to understand this question.How to prevent sandstorms?小试牛刀1 The storms are often such thick that you can’t see the sun.
2 It was the most frightened and the most dangerous situation that I’ve ever been in.
3 Traffic moves very slowly because the thick dust makes that difficult to see.
4 It’s difficult to breathing and the dust makes me ill. such改为sofrightened 改为frighteningthat 改为itbreathing 改为 breathe小试牛刀 Sandstorms have been a major 1______ for many Asian countries. They begin in desert areas. The desert is only 250 kilometers away 2 _____ the west of Beijing. Therefore, sandstorms sometimes 3_______ (affect) Beijing. The thick dust makes 4______ difficult to see. The 5_______ (strong) of the storm sometimes surprises people. To prevent the storms, already the government6__________ (plant) more than 30 billion trees.
disastertoaffectitstrengthhas plantedHomeworkWhat should we do to prevent the sandstorms?
Title : How to prevent the sandstorms?
Words:120
Key words:
firstly; what’s more; last but not the least.
(每个关键词后跟2到3句话，中心一致)
Bye-bye!评测练习
一、重点短语
1、作为沙漠化的结果____________ 2、气候变化__________________
3、砍倒树木 ______________ 4、挖光草皮___________________
5、影响北京________________ 6、醒来_________________
7、使得不容易看到________________8、沙尘暴的力量__________________
9、使得人们吃惊____________ 10、建议人们不要外出___________________
11 使人难受 _________________ 12. 戴上口罩 ___________________
二、单词填空
1．There wasn't enough ________(证据) to prove him guilty.
2．We have an ________(紧急的) need for help.We are running out of food.
3．She is always ________(抱怨) about something.
4．The shady trees provide _______(保护) against the burning rays of the sun.
5．She hasn't been seen for days and we are ________(担心)for her safety.
6．The ________ (气氛)changed as soon as she walked in.
7．An unhappy home________ (环境)can affect a child's behavior.
8．Measures have been taken to clean the rivers ________(被污染的) with chemical waste from factories.
9．Your idea is ________(绝对地) impossible.
10．There is a ________ (主要的)problem with parking in Beijing.
三、根据汉语意思完成句子
Ⅴ.翻译句子
1．那场大雨使他不可能按时完成任务。(形式宾语)
___________________________________________________________
2．我们遇上了大雨，全都湿透了。(be caught in)
___________________________________________________________
3．我们必须阻止这一疾病蔓延开。(prevent)
___________________________________________________________
4．他假装读过那本书。(不定式)
___________________________________________________________
5．路旁的许多大树都被砍掉建房子了。(cut down)
