一。 学习目标aims and demands
1继续学习并掌握不定代词的用法。
2学习运用简单的阅读策略获取信息。
二．学法指导how to study
1、预习unit2topic2section c,并对语言点、难点做出标记；
2、学习导学案，并完成导学案上的练习题。
三、自主预习 prep i、翻译下列单词并标上词性：
1、洞2、氧气3、放射物。
4、毛毯5、逃跑6、上升。
ii、在课本中找出下列短语划在书上并翻译。
1.臭氧层2.更多的二氧化碳。
3.在地球上；究竟4.在这个时期。
5.大大改变了我们的星球6.全世界(2
7.数以百外计的树木___8.拿走，取走___9.污染空气___
10.越来越多种类的动植物11.一种特殊的氧气。
12.形成一个非常大的洞13.来自太阳的有害的射线。
14.穿过这个洞15.直接地到达地球。
16.致癌___17.增加了许多18.燃油。
19.来自太阳的热量___20.温室效应___21.海平面。
22.全球气候23.涉及，有关，提到。
iv、知识链接 hot links
things we’ve done are very good for the earth while some are bad. 译。
点拨：①some things we’ve done --我们已经做过的事情，在句子中作主语 the films they’ve seen
while 并列连词，“而，却”，表示对照关系。
练习：a.她妹妹喜欢唱歌，而她喜欢阅读。
b.昨天他们都出去了，而她却留在家里。
链接：while---在…时 --从属连词，常引导含有延续性动词的时间状语从句，表示一个动作在进行的同时，另一个动作也在发生
练习：我做作业时，妈妈正在做饭。
while---一会儿，一段时间 --名词常用短语：for a while --一会儿。
练习：我们将离开一会儿。
it rains or when the wind blows the earth is taken away. 译。
点拨：take away 拿走，取走， 句子中是被动语态。
练习：a. 我不喜欢这些书，请把它们拿走。
b. they took away everything they like when they left. 译。
拓展：与take 有关的词组。
脱下，（飞机）起飞把…带到…去发生。
乘公交车，轮船，火车 __轮流，替换 __照顾，照看。
拍照休息一下___坐下吃药。
吸毒花费某人时间做某事___锻炼。
heat from the sun can’t escape so the temperature is rising. 译：__
点拨：rise --升起，上升 (不及物动词) 拓展：raise ①举起，提起，抬起 ； 筹集 (及物动词)
练习：1)太阳从东方升起。the sunin the east.
2)河水在慢慢地**。the water in the river
3)让我们为友谊干杯。let’s __glasses to
4)he raised his voice to make everyone hear him clearly. 译。
五、目标检测
i、单词拼写。
1. not everyone knows how sandstorms come into b
2. of all the rubbish, about 35 percent can be recycled w___the rest can’t.
3. it says that china has become the world’s largest p___and user of coal.
4. ozone can prevent the earth from being hurt by h___rays from the sun.
5. humans h**e come to realize the iof protecting animals
ii、单项选择。
)1.—would you like to h**e __no, thank you. i’ve had enough.
a. anything moreb. something more
c .more anythingd. more something
) driver was badly hurt __of the traffic accident.
a. at a result b. in the result c. with the result d .as a result
) washing machine is very easy to use. _can learn to use it in a very short time. a.
somebody b. anybody c. nobody d .
few people
)4.—hi, bob! i can’t find my story book. h**e you seen it?
—sorry, i h**en’t. why not ask jim? perhaps he’s seen it __
a. anywhere b. everywhere c. nowhere d .somewhere
)5.__everybody likes watching tv in my family. my parents like doing outdoor activities.
a. no b. not c.
none d. nobody
) must plant more trees after we __every year.
a. cut off them b. cut them off c. cut down them d .cut them down
) cleaners must keep the street __
a. from getting dirty b. to dirty c. to get dirty d. getting dirty
( )8.—is __ready for the trip? —no, we h**en’t got a camera.
a. nothing b. everything c. something d. anything
( )of us __running, but we all like swimming.
a. likes b. like c .liking d. would like to
( )li always helps others __she is very busy.
a. butb. andc. although d. because
iii、完形填空。
jim, a successful businessman, told the experience of his childhood.
when he was 12, his parents 1 . he was alone and didn’t get on well with others. people always laughed 2 him.
no one showed kindness (友善) to him. his only friend was a dog named tige.
one day as he walked down the street, a young lady was walking in front of him. suddenly one of her bags dropped from her arms. as she stopped 3 , she dropped other bags.
he came to help her.“thank you, dear! you are a nice little boy!
”she said kindly, smiling.
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