2013年高中英语 Unit 3 Beijing 2008 sectionA同步精品课件 重庆大学版必修5

课件36张PPT。Section A　Getting Ready and Reading课堂互动探究Unit 1预习多维感知 Section A预习多维感知Ⅰ.词语翻译
1．at least ________________
2．above the level of the sea ________________
3．far away ________________
4. be covered with/by... ________________
5．make up ________________
6．play a role in... ________________答案：1.至少　2.海平面以上　3.遥远；深远　
4.被……所覆盖　5.形成、构成或组成某物　
6.在……方面起作用Ⅱ.句型必背
1．The flattening and swelling are too small to see.
(两极的)扁平和(赤道的)凸出都无法察觉。
2．The part of the soil in which crops grow is rarely more than 20 inches deep.
能耕种庄稼的那部分土壤很少超过20英寸。
3．It may take you weeks to climb Mount Everest，which is a little more than 5.5 miles above sea level.
你可能需要花费好几周的时间才能登上珠穆朗玛峰，它高出海平面5.5英里多。Ⅲ.根据课文“Our Earth”完成短文
The earth，the 1.____________ planet from the sun，made up of the shrinking and clumping together of a vast cloud of 2.____________ and gas in 3.____________ space，was formed at least 4.____________ billion years ago.Seen from space，it looks like a perfect 5.____________.Nearly three?quarters of the earth’s surface is covered with water，almost all of which makes up the oceans which play a very important 6.____________ in keeping the earth’s 7.____________ relatively stable.One?fourth of the earth’s surface is 8.____________，about one?fifth of which is always covered by ice.The very thin 9.____________ of air，soil and water form a very narrow band from the bottom of the sea to the top of the thickest part of the atmosphere，the biosphere，within which all living thing 10.____________.
答案：1.third　2.dust　3.outer　4.five　5.ball　6.role　7.temperature　8.land　9.coverings　10.exist课堂互动探究1.shrink
It was formed from the shrinking and clumping together of a vast cloud of dust and gas in outer space.(page 34)观察理解
1)The market for their products is shrinking.
2)We made it clear to them that we would not shrink from confrontation.
3)My sweater shrank in the wash.归纳拓展
1)vt.& vi.收缩，(使)皱缩，缩短，减少
2)vi.退缩，畏缩
3)shrink from sth.畏缩，回避(困难)等现学现用
翻译填空
1)They did not ____________ doing what was right.
只要做得对，他们就无所畏惧。
答案：shrink from2.rise
This is a very small rise when compared with the size of the whole earth.(page 34)
观察理解
1)Tenants face a 20% rent rise.
2)House prices are likely to rise towards the end of this year.
3)He rose to his feet and tapped on the table as if to speak.比较网站
rise，raise，arise现学现用
单项填空
2)No further financial problem ________，but we still couldn’t make both ends meet.
A．rose　　　　　　　　
B．arose
C．aroused
D．raised解析：选B。考查动词辨析。句意：虽然没有出现进一步的经济问题，但我们仍然不能做到收支平衡。rise自然事物/景物的升起；arise(尤指问题或困境)发生，产生，出现；arouse激起，引起(情感、态度)；raise举起，抬起，抚养，为及物动词。结合语意及用法，B项最佳。翻译填空
3)A new crisis has ________.
新危机已经出现。
4)Prices are ________.
物价正在上涨。
5)They ________ their offer to $500.
他们将出价抬高到500美元。
答案：3)arisen　4)rising　5)raised3.exist
The earth is the only planet on which water can exist in liquid form on the surface.(page 34)
观察理解
1)Other wonderful world exists all around us.
2)There exist many opportunities for regional development.
3)This law came into existence in 1918.归纳拓展
exist on... 靠……为生
exist by... 靠……方式为生
exist in... 存在于……之中
There exists/existed... 某地有……；存在
existence n. 存在；生存
come into existence 产生；开始存在
in existence 存在现学现用
6)I can hardly ________ on the wage I’m getting；there is no money for luxuries.
A．excite
B．exit
C．exist
D．exact
解析：选C。句意：我靠我挣的工资简直难以糊口，根本无钱享受。本空缺少的是谓语动词，exist意为“生存”。4.at least
Many scientists believe that the earth，as well as the sun and the other planets in our solar system，was formed at least five billion years ago.(page 34)观察理解
1)It’ll take you at least 20 minutes to get there.
2)—Do you mind if I put the television on?
—No，not in the least!
3)I like that least of all.归纳拓展
at least 起码，至少，不管怎样
at the very least 最起码
not the least(＝not in the least/not at all)
一点也不，绝不
least of all(在许多……之中)最不……的现学现用
7)The house still needed a lot of work，but ________ the kitchen was finished.
A．instead
B．altogether
C．at once
D．at least
解析：选D。句意：房子还需要很多工作，但至少厨房已经完工。instead代替，而不是；altogether总共；at once立刻，马上；at least至少，符合句意。5.make up
Almost all of this water makes up the oceans which play a very important role in keeping the earth’s temperature relatively stable.(page 34)观察理解
1)Women make up 56% of the student numbers.
2)They two finally made up after two months’ time without even a single word.
3)They made up for their inexperience by careful preparation for each lesson.
4)The committee is made up of seven members.归纳拓展
make up for 弥补；补偿
make up with... 与……言归于好
be made up of... 由……组成
现学现用
8)He had no choice but to ________ an excuse to explain his being late.
A．make out
B．make up
C．make up for
D．make over
解析：选B。make out分辨，理解；make up编造，弥补；make up for弥补；make over改做，重做。根据句意可知选B。1.原句展示
The flattening and swelling are too small to see.(page 34)
(两极的)扁平和(赤道的)凸出都无法察觉。句法简析
(1)too＋adj./adv.＋to do sth.太……而不能做某事，表示否定意义。
①That crossword is too difficult for me to guess.
那种纵横字谜对我来说太难了，我猜不出来。
(2)某些形容词与too...to...句型连用时，too(＝very)表示肯定的意义。这些形容词多为表示情感的词，如glad，pleased，surprised，delighted，happy，easy，willing，ready，eager，anxious等。②They seemed to be too nervous and were too anxious to leave.
他们好像过分紧张，并且十分急于离开。
(3)“too...to...”结构和never，not等否定副词连用时，表示肯定意义，意为“无论……也不过分，越……越好”。
③We are never too old to learn.
活到老，学到老。(4)如在too前加上only，but，all，simply或just时，表示肯定意义。
④Sadly this kind of rude behaviour is becoming all too common these days.
如今这种粗鲁行为正变成常见之事，令人悲哀。现学现用
1)—Must I turn off the gas after cooking?
—Of course.You can never be ________ careful with that.
A．too
B．very
C．so
D．enough
解析：选A。考查固定用法。never be too careful意为“再怎么仔细也不为过，越仔细越好”。故答案为A。2.原句展示
It may take you weeks to climb Mount Everest，which is a little more than 5.5 miles above sea level.(page 35)
你可能需要花费好几周的时间才能登上珠穆朗玛峰，它高出海平面5.5英里多。句法简析
It takes/took sb./sth.some time to do sth.花费某人
(多长时间)做……；需要某人(某种特殊品质，如耐力、努力等)去做……。it是形式主语，真正的主语是不定式。
1)It takes five hours to go from New York to London.
从纽约到伦敦需要5个小时的时间。2)It takes strength and stamina to be a long-distance runner.
要想成为一名长跑运动员，需要有体力和耐力。
3)It takes so long to list everything that Oprah Winfrey has done.
你无法用三言两语来概括奥普拉·温弗瑞的个人成就。现学现用
2)The accident ________ him his life.It ________ 5 years for his wife to ________ off the debts he left.
A．spent；cost；take
B．took；spent；pay
C．cost；spent；take
D．cost；took；pay
解析：选D。cost sb.sth.“使某人失去(生命，健康等)”；It takes some time for sb.to do sth.“花费某人时间做某事”；pay off “还清”。