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初中英语Topic 2 All these problems are very serious.教学课件ppt
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这是一份初中英语Topic 2 All these problems are very serious.教学课件ppt，文件包含115Unit4Topic2SectionC课件ppt、p93-1amp3、p93-1awmv等3份课件配套教学资源，其中PPT共32页， 欢迎下载使用。
水星（Mercury）
木星（Jupiter）
天王星（Uranus）
海王星（Neptune）
slar system
[`səulə `sistəm]
Which ne is Mars ?
Mars is the furth planet frm the sun in ur slar system.
distance frm the sun?
temperature?
What d yu knw abut Mars ?
Mars is named after Mars, the Rman gd f war.
the Rman gd f war
[‘rəumən] 罗马
It is much smaller than the earth. Its diameter is 53% f the earth’s.
[daɪ'æ mi:tə] n. 直径
The gravity n its surface is abut 40% as strng as it is n earth. S a persn weighs 90 kils n earth weighs nly 36 kils n Mars.
[ˈgrævəti] n. 引力，重力
/ wei / v. 称重
During spring and summer, the strng strms can cver the whle surface f Mars.
Read the first sentence f each paragraph. Find ut the same wrd in each paragraph.
Task 1.What’s the title f the passage?
Task 2. Read and find ut the main idea f each paragraph.
A. Describe what Mars lks like
B. Ask what Mars lks like
Para 1 ___________Para 2 ___________Para 3 ___________
1.Predict which sentences are true abut Mars____1). Mars lks like a red ball.____2).The temperature n Mars is very high.____3). Mars is much larger than the earth.____4). Mars is t far away fr us t reach.
Task 3. Read 1a and make true r false.
Mars is the furth planet frm the sun in ur slar system and is named after Mars, the Rman gd f war. Its diameter is 53% as wide as that f the earth. Mars ges arund the sun at a distance f abut 228 millin kilmeters. ….. It lks like a red and range ball. …But during spring and summer, the surface f Mars is cvered by strng strms. The gravity f Mars is abut tw-fifths as strng as the earth’s. The temperature n Mars is between -138 ºC and 28ºc. The air has nly 0.13 xygen.
Task 4. Listen t Par 2, and underline what ways f Mars are mentined .
_________________________
_______________
___________
_______________
____________________
Task 5. Read par 2. and fill in the blanks .
了解 ______________ name… after _______________g arund ___________ 相隔 _____________________the surface f ________________ 被覆盖___________________在 和之间 _______________search fr _____________________ _______________ 离...最近 ___________________________
at a distance f …
be cvered by/with……
between……and……
Task 6. Translate the fllwing phrases.
It takes sb sme time t d sth
1. Mars is the furth planet frm the sun in ur slar system and is named after Mars, the Rman gd f war. 火星在太阳系中，是距离太阳第四远的星球，它是以罗马战神玛尔斯的名字命名的。 be named ... after... 意为：“以...命名” 如：He was named after his father. 他是以他父亲的名字命名的。 请思考： 这座桥是以它的设计者的名字命名的。 The bridge ______________ its designer.
was named after
Language Pints
2. Its diameter is 53% as wide as that f the earth.它的直径是地球直径的53%。 3. The gravity n the surface f Mars is abut tw-fifths as strng as it is n earth. 火星表面的引力大约是地球引力的五分之二。 倍数(分数)的表示法：倍数(分数)+as+形容词或副词的原级+as。 如：这个盒子的重量是那个盒子的四倍。 This bx is __________________________________that ne.
fur times as heavy as
4. Mars ges arund the sun at a distance f abut 228 millin kilmeters. 火星在距太阳约228 000 000千米处环绕着太阳转。 at a distance f …意为“有 ……距离 ，相隔” at/frm a distance 意为“在远处”如: (1)飞机场离这儿大约30公里。 The airprt is at a distance f abut 30 kilmeters away frm here. (2)警察远远地跟着他。 The plice fllwed him at a distance.
5. It takes a spaceship abut eight mnths t reach Mars frm the earth when the tw planets are clsest t each ther.当两个星球（火星和地球）距离最近时，宇宙飞船从地球驶到火星，要花费大约八个月的时间。 （1）clsest 是clse的最高级形式，当形容词的最高级作表语时，定冠词the可以省略。 (2)It takes sb/sth sme time t d sth.做某事花费某人/某物多少时间。 e.g. It takes me tw hurs t finish my hmewrk every day. 我每天都要花两个小时来完成作用业。
6. Scientists are still searching fr mre infrmatin abut Mars.科学家们正在对火星进行更多的探索。 1. search fr :表示没有“被搜索的对象” 只有“寻找的目标” 。e.g. All night they searched fr the lst by. 2. search… fr…表示搜查某一对象的目的是要找到什么, 强调有具体的目标。e.g. She searched many shps fr Jim’s gift. 3. search 意为“在……搜查”或“搜身”, 是个及物动词，后面直接跟“被搜查的对象”。e.g. Mr.Smith searched every rm in the huse.
7. It has been tw days since we landed n Mars. 我们登上火星已经两天了。 It 用作形式主语谈论时间，与since连用的时间结构为It is (has been) + 一段时间 + since。如： It is a lng time since they left. = It has been a lng time since they left. 他们已经离开很久了。请思考：我们来到金虹中学已经大约3年了。 It ____________ three years since we came t Jinhng Middle Schl.
is/has been
Mars, furth, be named after, diameter, as wide as, at a distance f, tell, because, bright red, ball, strms, gravity, temperature, xygen, eight mnths, clsest t, searching fr
Retell 1a accrding t the key wrds.
Hi Kangkang,It has been tw days_________( since ,frm) we landed n Mars. It _________(cst, tk) us mre than tw years t_________ (reach, get) here. Generally, the jurney went well, but the living cnditins were_______( quiet, quite) bad during the jurney. We had t prduce mst f the fd in the spaceship. ______________(What’s mre, What’s wrse), ur water supplies were very lw. We had t limit the use f water during _________(thse, these) days. S we had a shwer every six weeks. We will spend anther seven hundred and sixty-three days n Mars. __________( Hw, What )a lng time! I ften miss the family, but the excitement f being n Mars is wrth it!Wish me luck! Yurs, Uncle Stephen
What’s wrse
Task 9. Kangkang’s uncle sent an e-mail t him frm Mars. Chse the right wrds t cmplete the letter.
Read 2 and answer the questins.
(1) Wh is this e-mail frm and t? It is frm Uncle Stephen t Kangkang. (2) Hw lng did it take them t get there? Mre than tw years. (3) Did everything g well during the jurney? N, it didn’t.
clthing fd and drinks weather transprtatin …
Task 11. Write back an e-mail t Uncle Stephen fr Kangkang and ask him fr mre infrmatin abut Mars. The list may help yu.
Dear Uncle, I’m very glad t receive yur e-mail, and I knw that the living cnditins were quite bad during yur jurney. I am interested in the infrmatin abut Mars. Can yu tell me mre abut it ? Hw abut the weather n Mars? Is it very cld? What kind f transprtatin d yu use there? I am lking frward t yur e-mail! Gd luck! Yurs, Kangkang
1. Sme wrds: strm, weigh, jurney 2. Sme phrases: name after, as …as, at a distance f, search fr 3. Sme sentences: (1) Its diameter is 53% as wide as that f the earth. (2) It has been tw days since we landed n Mars.
1. Talk abut smething mre abut Mars. 2. Write back an e-mail.
Mars, the ________ planet f the slar system, ges arund the sun at a ________ f abut 228 millin kilmeters. Its ________ is 53% as wide as that f the earth. It lks like a _____ and _______ball. It’s very beautiful. But during ______ and _______, strng ________ can cver the whle ________ f Mars. The gravity n the surface f it is abut ________ as ________ as it is n earth.
Read 1a.Memrize the useful expressins and key sentences which we learned tday.Finish Sectin C in yur wrkbk.Review Sectins A-C.
水星（Mercury）
木星（Jupiter）
天王星（Uranus）
海王星（Neptune）
slar system
[`səulə `sistəm]
Which ne is Mars ?
Mars is the furth planet frm the sun in ur slar system.
distance frm the sun?
temperature?
What d yu knw abut Mars ?
Mars is named after Mars, the Rman gd f war.
the Rman gd f war
[‘rəumən] 罗马
It is much smaller than the earth. Its diameter is 53% f the earth’s.
[daɪ'æ mi:tə] n. 直径
The gravity n its surface is abut 40% as strng as it is n earth. S a persn weighs 90 kils n earth weighs nly 36 kils n Mars.
[ˈgrævəti] n. 引力，重力
/ wei / v. 称重
During spring and summer, the strng strms can cver the whle surface f Mars.
Read the first sentence f each paragraph. Find ut the same wrd in each paragraph.
Task 1.What’s the title f the passage?
Task 2. Read and find ut the main idea f each paragraph.
A. Describe what Mars lks like
B. Ask what Mars lks like
Para 1 ___________Para 2 ___________Para 3 ___________
1.Predict which sentences are true abut Mars____1). Mars lks like a red ball.____2).The temperature n Mars is very high.____3). Mars is much larger than the earth.____4). Mars is t far away fr us t reach.
Task 3. Read 1a and make true r false.
Mars is the furth planet frm the sun in ur slar system and is named after Mars, the Rman gd f war. Its diameter is 53% as wide as that f the earth. Mars ges arund the sun at a distance f abut 228 millin kilmeters. ….. It lks like a red and range ball. …But during spring and summer, the surface f Mars is cvered by strng strms. The gravity f Mars is abut tw-fifths as strng as the earth’s. The temperature n Mars is between -138 ºC and 28ºc. The air has nly 0.13 xygen.
Task 4. Listen t Par 2, and underline what ways f Mars are mentined .
_________________________
_______________
___________
_______________
____________________
Task 5. Read par 2. and fill in the blanks .
了解 ______________ name… after _______________g arund ___________ 相隔 _____________________the surface f ________________ 被覆盖___________________在 和之间 _______________search fr _____________________ _______________ 离...最近 ___________________________
at a distance f …
be cvered by/with……
between……and……
Task 6. Translate the fllwing phrases.
It takes sb sme time t d sth
1. Mars is the furth planet frm the sun in ur slar system and is named after Mars, the Rman gd f war. 火星在太阳系中，是距离太阳第四远的星球，它是以罗马战神玛尔斯的名字命名的。 be named ... after... 意为：“以...命名” 如：He was named after his father. 他是以他父亲的名字命名的。 请思考： 这座桥是以它的设计者的名字命名的。 The bridge ______________ its designer.
was named after
Language Pints
2. Its diameter is 53% as wide as that f the earth.它的直径是地球直径的53%。 3. The gravity n the surface f Mars is abut tw-fifths as strng as it is n earth. 火星表面的引力大约是地球引力的五分之二。 倍数(分数)的表示法：倍数(分数)+as+形容词或副词的原级+as。 如：这个盒子的重量是那个盒子的四倍。 This bx is __________________________________that ne.
fur times as heavy as
4. Mars ges arund the sun at a distance f abut 228 millin kilmeters. 火星在距太阳约228 000 000千米处环绕着太阳转。 at a distance f …意为“有 ……距离 ，相隔” at/frm a distance 意为“在远处”如: (1)飞机场离这儿大约30公里。 The airprt is at a distance f abut 30 kilmeters away frm here. (2)警察远远地跟着他。 The plice fllwed him at a distance.
5. It takes a spaceship abut eight mnths t reach Mars frm the earth when the tw planets are clsest t each ther.当两个星球（火星和地球）距离最近时，宇宙飞船从地球驶到火星，要花费大约八个月的时间。 （1）clsest 是clse的最高级形式，当形容词的最高级作表语时，定冠词the可以省略。 (2)It takes sb/sth sme time t d sth.做某事花费某人/某物多少时间。 e.g. It takes me tw hurs t finish my hmewrk every day. 我每天都要花两个小时来完成作用业。
6. Scientists are still searching fr mre infrmatin abut Mars.科学家们正在对火星进行更多的探索。 1. search fr :表示没有“被搜索的对象” 只有“寻找的目标” 。e.g. All night they searched fr the lst by. 2. search… fr…表示搜查某一对象的目的是要找到什么, 强调有具体的目标。e.g. She searched many shps fr Jim’s gift. 3. search 意为“在……搜查”或“搜身”, 是个及物动词，后面直接跟“被搜查的对象”。e.g. Mr.Smith searched every rm in the huse.
7. It has been tw days since we landed n Mars. 我们登上火星已经两天了。 It 用作形式主语谈论时间，与since连用的时间结构为It is (has been) + 一段时间 + since。如： It is a lng time since they left. = It has been a lng time since they left. 他们已经离开很久了。请思考：我们来到金虹中学已经大约3年了。 It ____________ three years since we came t Jinhng Middle Schl.
is/has been
Mars, furth, be named after, diameter, as wide as, at a distance f, tell, because, bright red, ball, strms, gravity, temperature, xygen, eight mnths, clsest t, searching fr
Retell 1a accrding t the key wrds.
Hi Kangkang,It has been tw days_________( since ,frm) we landed n Mars. It _________(cst, tk) us mre than tw years t_________ (reach, get) here. Generally, the jurney went well, but the living cnditins were_______( quiet, quite) bad during the jurney. We had t prduce mst f the fd in the spaceship. ______________(What’s mre, What’s wrse), ur water supplies were very lw. We had t limit the use f water during _________(thse, these) days. S we had a shwer every six weeks. We will spend anther seven hundred and sixty-three days n Mars. __________( Hw, What )a lng time! I ften miss the family, but the excitement f being n Mars is wrth it!Wish me luck! Yurs, Uncle Stephen
What’s wrse
Task 9. Kangkang’s uncle sent an e-mail t him frm Mars. Chse the right wrds t cmplete the letter.
Read 2 and answer the questins.
(1) Wh is this e-mail frm and t? It is frm Uncle Stephen t Kangkang. (2) Hw lng did it take them t get there? Mre than tw years. (3) Did everything g well during the jurney? N, it didn’t.
clthing fd and drinks weather transprtatin …
Task 11. Write back an e-mail t Uncle Stephen fr Kangkang and ask him fr mre infrmatin abut Mars. The list may help yu.
Dear Uncle, I’m very glad t receive yur e-mail, and I knw that the living cnditins were quite bad during yur jurney. I am interested in the infrmatin abut Mars. Can yu tell me mre abut it ? Hw abut the weather n Mars? Is it very cld? What kind f transprtatin d yu use there? I am lking frward t yur e-mail! Gd luck! Yurs, Kangkang
1. Sme wrds: strm, weigh, jurney 2. Sme phrases: name after, as …as, at a distance f, search fr 3. Sme sentences: (1) Its diameter is 53% as wide as that f the earth. (2) It has been tw days since we landed n Mars.
1. Talk abut smething mre abut Mars. 2. Write back an e-mail.
Mars, the ________ planet f the slar system, ges arund the sun at a ________ f abut 228 millin kilmeters. Its ________ is 53% as wide as that f the earth. It lks like a _____ and _______ball. It’s very beautiful. But during ______ and _______, strng ________ can cver the whle ________ f Mars. The gravity n the surface f it is abut ________ as ________ as it is n earth.
Read 1a.Memrize the useful expressins and key sentences which we learned tday.Finish Sectin C in yur wrkbk.Review Sectins A-C.
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