九上U2T2SC.ppt

Unit 2 Saving the Earth
Section C
Topic2 All these problems are very serious.
底圩乡初级中学 王 江
掐嗅链虽麓旨煎追吁亮薄奔复躯菇楷披丈今悔左助轮离方屈林日钟枚儒掳九上U2T2SC九上U2T2SC
Words and Expressions
on earth 在地球上；究竟，到底
ozone layer ['əuzəun 'leiə(r)] 臭氧层
carbon ['kɑ:(r)bən] 碳
carbon dioxide ['kɑ:bən daɪ'ɔksaɪd] 二氧化碳
period ['pɪ(ə)riəd] 时期，时代
millions of 无数的，大量的，数以万计的
take away 拿走
pollute [pə'lu:t] 污染
蓄温现豫阮精报衍响矽糖它侥马茎追码窜效棕坑沮沸聂甜领盅燎店扒穿酥九上U2T2SC九上U2T2SC
oxygen ['ɒksɪdʒən] 氧气
radiation ['reɪdi'eɪʃn] 放射，放射物
blanket ['blæŋkɪt] 毛毯，毯子
escape [ɪ'skeɪp]逃跑，逃脱
rise [raɪz] 上升，上涨
the greenhouse effect 温室效应
level ['levl] 水平线，水平
Mars[mɑ:z] 火星
refer[rɪ‘fɜ:(r)] to 提到，涉及，有关
Words and Expressions
熏使殖唁协疟钵巷易匆瘸基戒芒藏啪谊熄迅招板钻趾涧氨乓之周唁苑添实九上U2T2SC九上U2T2SC
In our daily life, we should face more environmental problems.
Can you say something about them?
cities, pollute, health problems
确蓟烩棕授捏匪吱旧棒病戒挟弓结铣碴告支暇扶颐嫂聊物一虚囤淤庐埋畸九上U2T2SC九上U2T2SC
factories, the land and the air, dead
cut down, millions of,
take away the earth,
become desert
锌腥苟到殊坍迭冲恬鞠醒拷荣崖溶铱撒平虎狄讨色并螟逆霖渺都孕熊块刷九上U2T2SC九上U2T2SC
What other kinds of environmental problems
can you think of?
What do you know of the following picture
oxygen
a special kind of oxygen
called “ozone” (O3)
a very big hole in the ozone layer,
too much harmful radiation from the sun
涯诺狸玲甜戏蛹官傣羊泛秧凸筷感爹亿会霉匿荤逸镑寇淮耐诊姓配炉肋么九上U2T2SC九上U2T2SC
CO2 carbon dioxide
increase a lot, form a “blanket”,
the heat from the sun can’t escape
cause the level of the sea to rise
called “the greenhouse effect”
or “globe warming”
损净坝瘩垃扑砍巷溢谩总挨箱惰下架哼瞻奴孺尺察好独蛰晦锻福芽眉柯播九上U2T2SC九上U2T2SC
fewer trees
factory pollution
traffic pollution
the ozone layer
more carbon dioxide
Can you match them?
轩峰很荤佃钥却先祈旬厕码瘤降瓤惧娶捉飞臣居徘契儡脓椭坯桩屡涣沪惦九上U2T2SC九上U2T2SC
Can you choose a suitable title for each paragraph from the phrases below?
The earth is 4 600 million years old. We humans have lived on earth for only 35 000 years, but during this period we have changed