英语仁爱科普版Topic 2 All these problems are very serious.说课ppt课件

这是一份英语仁爱科普版Topic 2 All these problems are very serious.说课ppt课件，共26页。PPT课件主要包含了Grammar，Exercises，Exercises ，Project，Summary等内容，欢迎下载使用。

Indefinite prnun and adverb 不定代词和副词一、构成。不定代词、副词是由sme, any, n, every与thing, ne,bdy, where 等构成。E.g. smething, smene, nwhere, anybdy等。二、用法。1．通常情况下,由sme, every加后缀构成的不定代词、副词常用于肯定句；由any加后缀构成的不定代词、副词常用于疑问句、否定句中。E.g. Yu will find yur bag smewhere. Can yu hear anything? 2. 注意：当说话人希望得到肯定答复,或是表示建议、请求等意图时,smething, smebdy, smene也可以用于疑问句中。当要表达“任何人；任何事物”时,anything, anybdy, anyne也可以用于肯定句中。E.g. Wuld yu like smething t drink? Anybdy can d it except Tm.
1. —Which wuld yu like t drink, tea r cffee? —________, thanks. I’m nt thirsty. A. EitherB. NeitherC. LittleD. Few 2. The students are ding sme cleaning. Sme are sweeping the flr, ________ are cleaning the desks and chairs. A. therB. the therC. anther D. thers 3. My parents are ________ dctrs. A. bthB. allC. either D. neither 4. There is ________ with my cmputer. Can yu help me? A. wrng anything B. anything wrng C. wrng smethingD. smething wrng5. The wind was blwing strngly. ________ peple walked in the street. A. LittleB. A littleC. FewD. A few 6. Hurry up. There is ________ time left. A. a littleB. littleC. a fewD. few
______ a result（结果）, a lt f rich land has changed _________ （变为）desert. Trees can stp the wind frm ______ the earth _____(吹走）.We shuldn’t leave rubbish ___________(到处).All these prblems are very serius,_____(所以) we must d smething nw.
here and there
water pllutin
Nearly three furths f the earth is cvered with water.
water n the earth
/'nɪəlɪ /几乎、将近
While there is s much water arund the wrld, we humans are still shrt f drinking water. S d animals and plants. D yu knw why?
be shrt f 缺乏……
1a Read the passage and put the fllwing paragraphs in the crrect rder.
( ) The sea seems t have the best answer. There is plenty f water in the sea. But we need t take the salt away frm the sea water. This is very expensive. If scientists can find cheaper ways t d it, we can slve the prblem f the shrtage f water. ( ) Hw can we avid a serius water shrtage? First, we shuld save water and nt waste it. Secnd, we shuld prtect ur water resurces and nt pllute them. Third, we shuld discver ways t reuse water. Scientists have made sme prgress in this field. Tday, sme large cities are reusing their water. But peple’s need fr water is increasing day by day. We still dn’t have enugh water. What else can we d? ( ) Althugh the wrld is hungry, it is even thirstier. While nearly ¾ f the earth is cvered with water, we are still shrt f drinking water. This is because abut 97% f the water n the earth is sea water. S we can’t use it fr watering plants r drinking directly. Humans can nly drink and use fresh water frm places including rivers, lakes and undergrund.
1. Why is ur earth thirsty when ¾ f the earth is cvered with water? Because abut 97% f the water n the earth is sea water and we can’t use it fr watering plants r drinking directly.2. What kind f water can humans drink and use? Humans can nly drink and use fresh water frm places including rivers, lakes and undergrund.
( )Althugh the wrld is hungry, it is even thirstier. While nearly ¾ f the earth is cvered with water, we are still shrt f drinking water. This is because abut 97% f the water n the earth is sea water. S we can’t use it fr watering plants r drinking directly. Humans can nly drink and use fresh water frm places including rivers, lakes and undergrund.
Read and answer.Hw can we avid a serius water shrtage? First, we shuld save water and nt waste it. Secnd, we shuld prtect ur water resurces and nt pllute them. Third, we shuld discver ways t reuse water.
( ) Hw can we avid a serius water shrtage? First, we shuld save water and nt waste it. Secnd, we shuld prtect ur water resurces and nt pllute them. Third, we shuld discver ways t reuse water. Scientists have made sme prgress in this field. Tday, sme large cities are reusing their water. But peple’s need fr water is increasing day by day. We still dn’t have enugh water. What else can we d?
Read Paragraph2 and mark T r F.( ) Scientists haven’t made any prgress in this field.( ) Water is reused nwhere.( ) Peple’s need fr water is increasing day by day.
Listen t Paragraph3 and fill in the blanks
( ) The sea______ ____ have the best answer. There is ______ ___water in the sea. But we need t ____the salt _____frm the sea water . This is very expensive. If scientists can find cheaper ways t d it, we can ______ ___ _________f the shrtage f water.
slve the prblem
Q: Hw can we change sea water int fresh water? We need t take the salt away frm the sea water.
名词 avid 代词 动名词
Language pints
e.g. He avided answering my questins.
1. Hw can we avid a serius water shrtage? 我们如何避免水资源短缺呢？
2….we shuld discver ways t reuse water.我们需要找到再利用水的方法。
adj.缺水的;（口）渴的
nearly 与almst 区别 ： almst 多表示时间、程度、距离、进度， 且almst 可以修饰mre than, t, nthing, nbdy, nwhere, n ne, nne, never 等词，nearly 则不行。nearly只与nt连用。 e.g. I have almst never seen him. I nearly didn’t hear what the teacher said in class.
3.Althugh the wrld is hungry, it is even thirstier 虽然世界是饥饿的，但是他更渴。
4.While nearly ¾ f the earth is cvered with water , we are still shrt f drinking water. 尽管地球差不多四分之三都被水覆盖，我们仍然缺少饮用水。
be shrt fn the earthuse sth fr sth/ding sthavid sthmake (sme) prgressin the fieldday by dayseem t d sthplenty f take away the shrtage f
1. 缺乏……2. 在地球上3. 用某物做某事4. 避免某事 5. 取得（一些）进步6. 在这个领域7. 一天天8. 似乎/好像做某事9. 大量的10. 带走、拿走11. ……的缺乏
Key phrases
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
ne by ne year by yearstep by step
一个接一个一年年一步步
1b Read 1a again and answer the questins.
1.Why is ur wrld thirsty when ¾ f the earth is cvered with water ? 2. What can we d nw t avid the water shrtage?
Because abut 97% f the water n the earth is sea water, we can’t use it fr watering plants r drinking directly.
First, we shuld save water and nt waste it. Secnd, we shuld prtect ur water resurces and nt pllute them. Third, we shuld discver ways t reuse water.
3.What will be the best way t slve the prblem in the future in the passage?
4.D yu knw any ther ways t slve the prblem? What is it?
T find cheaper ways f taking the salt away frm the sea water.
If we want t use the sea water, we must ______ ___(拿走） the salt frm the sea water. Hw can we _________(避免) a serius water shrtage? We shuld __________(找到) ways t reuse water. Peple’s need fr water is increasing ____________(一天天).Althugh the wrld is hungry, it is even ______(更渴的)While ___________(几乎，差不多)¾ f the earth is cvered with water, we are still shrt f drinking water.
take away
Water pllutin
less fresh water
We shuld prtect and save water.
Hw t prtect and save water?
Example: Pass laws( n.法律) against water pllutin. Cllect and reuse waste water. ————————————————————————————5. ————————————————————6. ——————————————————________________________________________…
Turn ff the taps in time
Take a shwer instead f a bath
stp…frm…, pur…int…, turn ff, tap(水龙头), wash clthes/vegetables, clean the flr, thrw…int…
Stp the factries frm puring waste water int rivers.
Dn’t thrw litter int the water
After we wash clthes r vegetables, we can reuse the water t clean the flr.
2 Discuss in grups different ways f prtecting and saving water. Write dwn the key infrmatin.
Example: Pass laws( n.法律) against water pllutin. Cllect and reuse waste water. … …
3. Write a prpsal abut saving water t all the students in yur schl.
My dear friends, Water is very imprtant t human beings. Let’s d smething t prtect and save it. First, ________ . Secnd,_________. Third, _________. Let’s try ur best t save water and ur planet.
_____________
My dear friends, Water is very imprtant t human beings. Let’s d smething t prtect and save it. First, we shuld prtect ur water resurces and nt pllute them. The gvernment shuld als pass laws against the water pllutin. Secnd, we shuld save water in ur daily life, turn ff the taps in time, take a shwer instead f a bath, and always remember t cllect and reuse water. Third, let’s try t spread the message abut prtecting and saving water. Make mre peple arund us knw the prblem f water shrtage and hw t help slve it. Let’s try ur best t save water and ur planet. Student Unin
Yu can write it like this.
Making Psters Abut Natural Resurces
Divide the class int several grups: Water Grup, Tree Grup, Sil Grup … Each grup shuld discuss their wn uses, the prblems that they face and their wishes. Then give a reprt in class. Example: Uses: I am sil. Plants can’t grw withut me. Peple use me t make many things … Prblems: Smetimes peple use t many chemicals in the fields. What’s wrse, they put waste int the land … S I’m hurt. Please help me. Wishes: I hpe human beings can prtect and take care f me. And then I culd d mre useful things fr them… 3. Make sme psters with the result.
We learn: 1. sme wrds: avid, discver, thirsty, nearly, law 2. sme phrases: day by day, be shrt f 3. sme sentences: (1)But peple’s need fr water is increasing day by day. (2)While nearly ¾ f the earth is cvered with water, we are still shrt f drinking water.We can: 1.Talk abut ways f saving water. 2.Summarize and use the indefinite prnun and adverb crrectly. 3. Write a prpsal.
AssignmentRead 1a.Review the useful expressins and key sentences which we learn in this tpic.Preview Sectin A in Tpic 3.