Unit 2 Saving the earth. Topic 3 What can we do to protect the environment SectionD课件（24张）

课件24张PPT。科普2011课标版 英语 九年级上册

Unit 2 Saving the Earth
Topic 3 What can we do at home
to protect the environment?Section D 1. Some words: dry,remove,replace,bite,insect ,planter
2. Some phrases: bite sb on ….; face many difficulties; even though
3. Some sentences: (1)Without them, it cannot breathe.
(2)They plant different types of trees so that birds and animals can live in the forests.
4. Use the compound sentence correctly.
5. Realize the importance of the forest.Learning objectivesGrammarandwhile orbutFunctions greenershut off EasierlouderreachNew words1.去除，移开
2.代替，取代
3.干燥的，
使…….干
4.昆虫
5.咬，叮
6.种植园主remove……from….
replace sb/sth
dry –--wet
dry my hand
insect
bite sb on…….
tree planter
Forests are the lungs of the earth. How important is the forest? Pre-readingHow do you understand “Forests are the lungs of the earth”?Forests can remove carbon dioxide from the
air and make oxygen. Paragraph 1While-readingWhat difficulties do tree planters face
when they plant trees ?
(1)The weather may be very hot and dry or it may be very cold and wet.
(2)There are often many insects that bite these planters on their legs, arms, and faces while they work.
(3)They carry heavy bags of small trees, and working in the mountains can be dangerous. Paragraph 2While-readingWhy do they plant different kinds of trees ?
They plant different types of trees so that
birds and animals can live in the forests. Paragraph 3While-readingWhat will happen if we do not plant new forests ?
The forests will become less and less.
We cannot breathe without them.
Would you like to be a tree planter when you are older ? Why or why not ?
…Have a try Post-reading1.面临许多困难
2.不同种类的
3.以便于
4.尽管
5.森林是地球之肺。没有它们，地球就不能呼吸。
6.他们相信50年以后，他们种的小树会变成美丽的森林。face many difficulties
different types of
so that
even though They believe that in 50 years their little trees will become beautiful forests.Forests are the lungs of the earth. Without them, it cannot breathe.Key pointsThey believe that in 50 years their little trees will become beautiful forests.1.The boy 18 years old in ten days.2.His father will come back ten days.
3. will his father come back?
will be inHow soon Post-reading1、Do you usually recycle
newspaper or cans?
Often. Seldom. Never.
2. What do you usually take ?
A bath. A shower.
3. When you have a short journey,how do you
usually go there ?
Walk or ride a bike. Go by car. Go by bus.
4. What do you usually do when you see others
littering?
Stop them. Pick the litter up Do nothing.
Project5. How often do you use paper towels?
Often. Seldom. Never.
6. How often do you eat fast food?
Often. Seldom. Never.
7. What type of bags do you use for shopping?
Baskets or cloth bags.
Reused plastic bags.
New plastic bags.
8. How often do you turn off the lights when you leave a room?
Nearly always. Seldom. Never. ProjectThrow the rubbish here and there.
Don’t spit in a public place.
Draw a beautiful picture on the public walls.
Don’t throw things away if they can be reused.
Go to school by bike instead of by bus.
Collect the rubbish and try to sort it.
Pour dirty water into rivers directly.
Turn off the lights when you go out.Which one is right?知识拓展What are the three R’s?
Which means “make something less or smaller”?
What should we reduce?
Which means “use it again”?
What should we reuse?
What should we do about recycling Reduce, reuse and recycle. Reduce. We should reduce the things which people can use only once. Reuse. We should reuse plastic bags. We should collect waste paper or soft drink cans, and sort them so that they can be recycled. 知识拓展 Protecting the environment is necessary .But what should we do? Here is my advice : We should help spread the message about protecting the environment to make more people know the importance of it .And we shouldn’t cut down many trees because it may cause sandstorms. We should make laws to stop factories pouring waste water into the rivers or lakes . And we should remember the three Rs-reduce,reuse and recycle. In my daily life ,I don’t litter or pick up flowers around .I often collect waste paper,soft drink cans ,plastic bags and bottles, I sort them so that they can be recycled.I turn off the lights when I leave a room . Doing such things isn’t enough ,I’ll try my best to do as many things as I can to protect the environment .After all, we have only one earth.We learn: 1. Some words: dry,remove,replace,dry, insect, bite, planter
2. Some phrases: face difficulties; even though
3. Some sentences:
(1)Without them, it cannot breathe.
(2)They plant different types of trees so that birds and animals can live in the forests.
We can: 1. Use the compound sentencecorrectly.
2. Realize the importance of the forest.Summary( ) 1. Help others whenever you can _____ you’ll make the world a nicer place to live in.
A. or B. and C. but D. while
( )2. Cross the road carefully, ________ you’ll keep yourself safe .
A. so B. or C. but D. and
( ) 3. Hurry up, ________ you’ll be late for the concert .
A. or B. so C. but D. and
( ) 4. ---Tell us something about Canada, OK?
--- I’m sorry. ________ Jack _______ I have ever been there.
A. Either, or B. Not only, but also
C. Both, and D. Neither, nor
( ) 5. I always enjoy visiting London, ______ I wouldn’t like to live
there.
A. because B. so C. but D. and BDADCExercises1.通读对话 仔细审题
将对话从头至尾通读一遍,并根据对话所给的情景判断出谈话双方的关系，谈话地点，谈话方式，谈话话题内容等基本情况。从而对症下药,从头脑中提取所需的习惯用语， 为顺利地完成此题做好准备。
2. 分析对话，试填答案
根据通读整个对话所获得的信息试探性地猜测所需语句。试填答案时，一要问答一致并根据所学关方面典型句型来试填。二要注意对话的表达要符合西方人的风俗习惯。
3.逐字细读，确定答案
要求学生把整个对话重读一遍，检查问答是否一致，对话是不是通顺，流畅，前后句子是不是符合逻辑，是否符合习惯用法。首字母、标点是不是书写正确。
4.复读整个对话，验证答案
所有空白都填好以后, 还要再认真仔细地阅读全文，对所有的答案逐个再做一次复检，细心审查，注意细枝末节，纠正包括大小写、标点、时态、语态及表达法等在内的任何错误，只有耐心细致，才能确保万无一失。 解题步骤 补全对话解题步骤及解题技巧 词语运用解题步骤及解题技巧 1．在拿到题目后，首先对备选的词汇研究几遍，对词性作简单的标记，同时对词意做初步的理解。
2．通读全文，通过上下文的句子充分理解短文的内容，注意发现固定搭配关系，凭借语感积极主动地猜测空格中所缺的信息，根据需要去备选词汇中寻找匹配答案。
3． 在选定单词后，不要轻率地填入。在填词过程中，又要保证句式结构的正确。记住下面的顺口溜：空前空后要注意， “名词”单复数要牢记，还有’s不能弃，“动词”注意要变形，“形副”注意要用三级，要填“数词”请留意，千万别忘“基”和“序”，填入“代词”需慎重，五格变化要谨记介词、连词最省力，看见照抄就可以。
4．完成填词后，应通读全文，复核校对。检查单词拼写是否正确，是否有时态语态惯用法及词语选用上的错误，以确保答案的正确性。最后把答案填入答卷时，切勿错位。解题步骤 研定查寻 I believe as long as you master the skills,steps and tips ,you will get over the difficulties and be the winners.
老师寄语：老师寄语：Details decide success!细节决定成败!Practice makes perfect！Wish all of you success
from the bottom of my heart !!!Thanks a lot for your listening !