Ⅰ.高频单词思忆
1.The Chinese government did well in
p SARS from spreading.
2.He c up at the good news.
3.There is a friendly a of helping
each other with difficulties in study in
our class.
4.Do you believe God e ?
基础落实
Unit 4 Astronomy:the science
of the stars
reventing
heered
tmosphere
xists
5.There is a v wind outside and the
snow is so heavy.
6.The fans cheered up at the _________ (到场)
of Jay Chou.
7.As a student,I should learn the ___________
(基本的) rules of mathematics.
8.A balloon ________(飘过) across the sky.
9.There is a shortage of _______(氧气) at the
top of the mountain.
10.I dream of flying to the moon by _________
(宇宙飞船).
iolent
presence
fundamental
floated
oxygen
spaceship
Ⅱ.重点短语再现
1.__________ 感到高兴
2._________ 既然
3._________ 突发；爆发
4.______________ 产生；分娩
5.__________ 下蛋
6._______________ 阻止；制止
7.__________ 当心；密切注视
8.________________ 熟悉；掌握
9.__________ 挡住(光线)
10._______________轮到某人；接着
cheer up
now that
break out
give birth to
lay eggs
prevent...from
watch out
get the hang of
block out
in one’s turn
Ⅲ.典型句式运用
1.Each religion and culture has its own ideas
about how life began on earth.What do you
know?每种宗教和文化都有它自己关于地球上生命
起源的看法。你了解些什么呢？
how life began on earth 作介词
_______的___语，宾语从句可作介词的宾语。
考点提炼
about
宾
2.No one knows exactly how the earth began,as
it happened so long ago. 没有人准确地知道地
球的起源，因为那发生在很久以前。
本句为复合句,as引导的从句表示____。
(1)since表示听者或读者已知的原因,即表达已知
信息。
(2)because表示听者未知的原因，可回答why的提
问，也可用在强调句型中成为被强调成分，而其
他几个词则无此用法。
(3)as与since接近，但原因程度比since更强烈。
(4)for并不表示直接原因,只是为主句所说的话提
供推断的理由，引导的分句不能放在句首。
考点提炼
原因
3.What it was to become was uncertain until
between 4.5 and 3.8 billion years ago when
the dust settled into a solid globe.它(地球)
将成为什么样子一直是个谜，直到45~38亿年以前
这些尘埃凝聚成一个固体球体。
be to do sth.
(1)表示“应当/必须做某事”，通常用于通知和
说明书里。
(2)表示“______________________”，其完成式
则表示“本来打算做某事”。
(3)表示“将来不可避免要发生的事”。
考点提炼
按计划或安排将要做某事
4.This produced a chain reaction,which made
it possible for life to develop.这就产生了
连锁反应，使生命发展成为可能。
make it+adj./n. for sb./sth.to do
sth.在此结构中,it是________,真正的宾语是后
面的______,而形容词(或名词)充当了__________
成分，尤其是当宾语太长时，常采用it作形式
宾语。
考点提炼
形式宾语
不定式
宾语补足语
5.Last month I was lucky enough to have a
chance to make a trip into space with my
friend Li Yanping,an astronomer.上个月我有
幸得到了同我的天文学家朋友李彦平去太空旅行
的机会。
to make a trip...为不定式作____,
修饰chance。不定式可用在名词、代词、the
first,the second以及the last,the only和最高
级等后面作定语。不定式作定语,常常表示____的
动作。
考点提炼
定语
将来
重点单词
1.exist
They laid eggs too and ________ on the earth
for more than 140 million years.(回归课本P26)
观察思考
The idea exists only in the minds of poets.
这种想法是诗人才有的。
We can’t exist without food or water.
没有食物和水我们就不能生存。
导练互动
existed
I can hardly exist on the wage that I’m
getting;there is no money for luxuries.
我靠我挣的工资简直难以糊口，根本没钱享受。
归纳总结
exist ________________。
exist in存在于……之中
exist on靠……为生
exist by靠……生存
existing adj.目前的；现存的
existence n.存在；生存
be in existence存在
come into existence开始存在；成立
bring into existence使发生，产生
vi.有，存在；生存
即学即用
(1)下岗工人主要靠面包和茶生存。
The laid-off workers mainly _________
bread and tea.
(2)有一个解决目前地理问题的好办法。
There _______ a good way to solve the
_________ problem in geography.
exist on
exists
existing
2.escape
...which prevents heat from _________ from
the earth into space.(回归课本P26)
观察思考
He escaped from the enemy’s prison.
他从敌人的监狱逃了出来。
He made his escape on a rainy night.
他在一个雨夜逃走了。
That is really a narrow/near escape.
那可真是九死一生。
escaping
归纳总结
escape ________________。
escape+ n./doing sth.逃脱了/避免了……
escape from/out of...从……逃跑
sth.escape sb.……被某人遗忘；未被注意
a narrow escape九死一生
make one’s escape逃跑
易混辨异
escape,flee,run away
(1)escape着重强调逃跑后的结果，而不是逃跑的动
作本身。
v. & n.逃跑，逃离
(2)flee着重强调逃跑的行为，常含有因“惧怕”而
逃跑的意味。
(3)run away强调动作性，有时含有“不辞而别”之
意，是口头用语。
即学即用
(1)有什么办法可以避免和他见面吗？
Is there any way to _______________ him?
(2)我一时忘了他的名字。
His name ___________ for the moment.
escape meeting
escaped me
3.mass
“If you are right,my _____ will be less
than on the earth...”(回归课本P31)
观察思考
The sky was full of dark masses of clouds.
天空中乌云密布。
Our cause needs the support of the masses.
我们的事业需要人民群众的支持。
There is/are a mass of children playing in
the park.
公园里有许多孩子在玩耍。
The great mass of men consider themselves
healthy.
大多数人都认为自己是健康的。
mass
归纳总结
mass _______________________________________。
a mass of/masses of大量的
the mass media大众传媒
mass production批量生产
in the mass总体上，总的来说
the (great) mass of大多数，大部分
注意 在表示“大量的，许多的”含义时，a mass
of/masses of既可修饰可数名词，也可修饰不可数
名词。在英语中类似的短语还包括：plenty of,a
lot of,lots of,a quantity of,quantities of等。
n.(聚成一体的)团;块;大多数;质量;群众;大量
即学即用
(1)下雨前，天上有一团团的乌云。
Before the rain,there were _______________
_______ in the sky.
(2)我挤过人群到了出口。
I struggled through ____________________ to
the exit.
masses of dark
clouds
the masses of people
重点短语与句型
4.break out
We watched,amazed as fire __________ on the
outside of the spaceship as the earth’s
gravity increased.(回归课本P31)
观察思考
If another world war should break out,what
would become of human beings?
如果再一次爆发世界大战,人类将会变成什么样子？
Fire broke out during the night.
夜间突然发生了火灾。
broke out
归纳总结
break out意为：___________。
break up解散；打碎
break through突破；强行穿过
break away from...脱离……
break off停止讲话
break into强行进入某处；突然开始(大笑、欢呼等)
break down(谈判)失败；(精神、身体)崩溃
break in进入；插话
突发；爆发
易混辨异
break out,happen,occur,take place
(1)break out通常指战争、疾病、灾害等突然爆发。
(2)happen强调偶然发生某事。
(3)occur指意想不到的事情发生。
(4)take place强调按事先的安排或计划发生。
即学即用
(1)I was still sleeping when the fire ___,and
then it spread quickly.
A.broke out B.put out
C.came out D.got out
解析 break out发生，符合题意；put out扑灭；
C、D表示“出来”。本题意为“火灾发生时,我在
睡觉……”。
(2)As the president’s car appeared,the
waiting crowds _____ loud cheers.
A.broke away B.broke into
C.broke out D.broke down
A
B
5.in time
They were ________ to produce carbon，
nitrogen，water vapour and other gases,...
(回归课本P25)
观察思考
The car came to a halt just in time to
prevent an accident.
那辆汽车及时停下，避免了一场事故。
You’ll learn how to do it in time.
你早晚能学会做这件事。
Don’t worry—I’m sure things will get
better in time.
不要担心——我相信事情迟早会有所好转的。
in time
归纳总结
in time意为___________。
(1)on time准时；按时
in no time立即；马上
at a time一次；每次
at one time曾经；一度
at times有时
ahead of time提前
for the time being暂时
take one’s time别着急；慢慢来
及时；最终
(2)It’s time to do sth./It’s time that sb.
did/should do sth.
到了某人做某事的时间
It/This is the first/second...time sb.have/has
done...
是某人第……次……(完成时)
each/every time+从句每次……时
即学即用
(1)医生及时赶到救了她的命。
The doctor came ________ to save her life.
(2)不要一起背诵，一次一个。
Don’t recite all together;one __________.
in time
at a time
6.now that
“Oh,dear,” I cried,“walking does need a
bit of practice _________ gravity has
changed.”(回归课本P31)
观察思考
Now (that) you are grownup,you must stop
this childish behaviour.
既然已经长大，你必须停止这种幼稚的行为。
Now that dinner is ready,wash your hands.
晚饭准备好了，洗手去吧。
Now that you have finished your work,you’d
better have a rest.
既然你的工作已经做完了，最好休息一下吧。
now that
归纳总结
now that意为：___________。
易混辨异
now that,because,since,as,for
(1)now that是固定短语，意为“既然；由于”，
引出原因状语从句，that可省略。
(2)because因为,表示直接的或为人所不知的原因。
(3)since既然(可与now that互换)，侧重主句。
(4)as由于，表示显而易见或已为人所知的原因。
(5)for因为,并列连词,引导一个分句,不能置于句首。
既然；由于
即学即用
(1)既然恢复了健康，他就可以继续学习英语。
____________________________,he can go on
with his English study.
(2)既然我们正高速地发展新技术,真正的挑战在于
寻找新的使用途径。
___________________________ new technology
at such a high pace，the true challenge is
to find new ways of using it.
Now (that) he is well again
Now that we are developing
7....,but it will not be as strong a pull
as the earth’s.……,但它不如地球的引力
那么强。
典例体验
John is _____________ Bob.
约翰与鲍勃一样聪明。
The girl was __________________ she was
beautiful.
这姑娘既漂亮又聪明。
归纳总结
as...as...比较结构：
(1)基本用法：as+形容词或副词原级+as分句。否
定形式为not as/so...as。主句主语与as分句主语
as bright as
as intelligent as
不同但比较的项目相同。
(2)主语相同，但比较的项目不同。
(3)as much/many+名词+as分句
He took as much butter as he needed.
他带的这些黄油够需要的。
(4)as+形容词原级+名词词组+as分句
as+adj.+a(n)+n.+as句型是“as...as”结构的一
种变化形式。与as的这种用法类似的词还有too...
to...句型中的too,感叹句中的how，so...that...
句型中的so等。
Jack is as efficient a worker as Bill.
杰克和比尔都是工作效率很高的工人。
即学即用
(1)我想用一种尽可能大众化的方式把我的个人经历
表达出来。
I want to express my personal experience in
_______________________________.
(2)这位歌手希望利用尽可能流行的歌曲来表达个人
的思想情感。
The singer tends to express his feelings and
thoughts in ______________________________.
as universal a way as possible
as popular a song as possible
8....,I found I was carried twice as far
as on the earth and fell over.……(当我
向前迈步的时候）我发现我所走的距离是在地
球上的两倍，我跌倒了。
典例体验
Asia is _______________________ Europe.
亚洲的大小是欧洲的4倍。
The new building is _______________________
the old one.新楼比旧楼高4倍。
This ball is __________________ that one.
这个球的大小是那个球的两倍。
The production now is ____________________
____ ten years ago.现在的产量是十年前的3倍。
four times as large as
four times higher than
twice the size of
three times what it
was
归纳总结
倍数表达法：
(1)...times ___________ 是……的几倍
(2)...times+__________________+than
(3)...times+the size/height/length/width/
depth+___...
(4)...times+_____从句
即学即用
(1)我们每个人比1910年吃的蔬菜多三倍。
We are eating ________________ vegetables
per person today than we did in 1910.
(2)我的房子是我父母房子的两倍大。
My house is _________________ my parents’.
as...as...
形容词/副词比较级
of
what
three times more
twice the size of
1.利用转化法，品句填词
（1）He couldn’t help the cakes hungrily
though he was asked to keep an out for
anyone who came here.(eye)
（2）In a