Unit 13 We're trying to save the earth! Section B (3a~Self Check) 课件(共25张PPT)

(共25张PPT)
Unit 13
We're trying to save the earth!
Section B (3a~Self Check)
能复习本单元的知识点。
1
2
能书写有关提出保护环境的建议的书信。
目标一:能复习本单元的知识点
Activity 1
Group work
以小组为单位，回忆归纳：
(1)有哪些后缀和其构词规律是什么？
(2)现在进行时的结构和标志词？
(3)现在完成时的结构和标志词
(4)被动语态的结构？used to 的意思？有哪些情态动词？
小组展示
1 组
2 组
3 组
4 组
Review 1
常见后缀
Review 2
现在进行时: Present progressive
定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作。
结构: be (am/is/are) + v.-ing
标志词：look, listen, now, right now…
Review 3
定义：表示动作已经完成, 但对现在造成影响; 或者表示从过去某一时间开始一直延续到现在并还可能持续下去的动作。
现在完成时: Present perfect
结构: has/have + 过去分词
标志词：already, yet, ever, never, since, for…
Review 4
被动语态：Passive voice
定义：表示主语是动作的承受者，即行为动作的对象的一种语态。
结构：be + 过去分词
used to
used to do sth. 表示过去常常做某事, 而现在往往
不做了, 后接动词原形。
be used to doing sth. 表示习惯于做某事
情态动词
1) 情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但不能单独作谓语, 只能与其他动词构成谓语。
常见的有: can (could), may (might), must, need, shall (should), will (would)等。
2) 情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式, 可用来表达更加客气、委婉的语气。
Activity 2
Write different forms of the words. Then add
more to each group.
1
v.— n.
pollute —__________
act —__________
protect —__________
inspire —__________
build —__________
create —__________
pollution
action
protection
inspiration
building
creativity
farm —__________
sing —__________
travel —__________
drive —__________
run —__________
write —__________
farmer
singer
traveler
driver
runner
writer
n. — adj.
fame —__________
wood —__________
science —__________
health —__________
south —__________
care —__________
famous
wooden
scientific
healthy
southern
careful
rain —__________
cloud —__________
luck —__________
help —__________
color —__________
day —__________
rainy
cloudy
lucky
helpful
colorful
daily
adj.— n.
different —__________
important —__________
sunny —__________
noisy —__________
harmful —__________
beautiful —__________
woolen —__________
difference
importance
sun
noise
harm
beauty
wool
adj. — adv.
happy —__________
loud —__________
quiet —__________
heavy —__________
easy —__________
angry —__________
good —__________
happily
loudly
quietly
heavily
easily
angrily
well
slow —__________
wide —__________
sudden —__________
real —__________
quick —__________
true —__________
possible —__________
slowly
widely
suddenly
really
quickly
truly
possibly
Match each statement with the grammar structure.
2
Statement Grammar
The river used to be so clean. Present progressive
We have seen many changes in the environment. Modal verbs
People should take public transportation more. Passive voice
The river is polluted by factories. used to
The air pollution is getting worse and worse. Present perfect
2
Write ways to cut down on these kinds of pollution.
3
Kinds of pollution Ways to cut down
water pollution
land pollution
noise pollution
air pollution
stop factories from
throwing waste into rivers.
Try not to use plastic bags when shopping
Cut down the number of cars.
Reduce the number of factories that burn coal.
Activity 3
目标二:能书写有关提出保护环境的建议的书信
Activity 1
Free talk
Is our city a nice place Why or why not
3a
Think about the environment in your town/city and complete the chart below.
Which parts of the town/ city have a nice environment Why are they nice Which parts need to be improved Why
Good environment Why Bad environment Why
park
the air is clean
streets
so many trees
restaurants
clean and tidy
river
a lot of rubbish
so many cars
air
too many
factories
streets
3b
Write a letter to the city mayor about the problems
and your suggestions.
Activity 2
How to write this article
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
Think（审题）
话题:________________ 体裁:________________
人称:________________ 时态:________________
第一人称
一般现在时为主
应用文
提出保护环境的建议
Group Discussion
Step Idea Expression
1
2
3
开篇点题：叙述家乡环境问题，以及造成污染的原因。
展开叙述：保护环境的具体措施以及希望政府采取必要的措施
…polluted seriously in our city; …because of
the importance of protecting the environment; It’s our duty to… ride a bike; throw litter into the bin; plant trees; restrict private cars; develop public transportation…
We should…; Let’s take action now.
总结：倡议行动起来，保护环境
Group Discussion
思路构建
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Writing time
Activity 3
和同桌交换习作互相欣赏，用红笔划出对方的亮点，并对不足的地方进行适当修改。
Activity 4
Sample writing
Dear Mayor,
The air is polluted seriously in our city. And it gets from bad to worse because of the increasing number of private cars. Especially during the rush hours, too many private vehicles move slowly on narrow roads, emitting a large amount of waste gas. Moreover, the poisonous gas sent by the nearby factories is also one of the main causes of pollution.
More and more people have realized the importance of protecting the environment. It’s our duty to protect it. In my daily life, I usually ride a bike or walk to school. I always throw litter into the bin. I will make an effort to keep our public places clean. In our school, many trees are planted to improve the air around us. But it is not enough. Therefore, it’s demanded that immediate and effective measures must be taken to restrict private cars. Public transportation must be developed to the largest extent. Besides, we should use renewable and clean energy recourses.
In a word, I hope the problem will be solved in the near future. Let’s take action now.
Best wishes!
Yours sincerely
归纳小结 How to wirte a letter to the city mayor about the problems or your suggestions
The first part
The second part
The thrid part
structure
结构
Describe the environmental problems in hometown and the causes of pollution
give suggestions or possible ways to solve the problems.
Take action to protect the environment