Unit 4　Astronomy：the science of the stars
重点短语
1． 　及时；最终，迟早
2． 下蛋
3． 分娩
4． 依次，轮流
5． 阻止；制止
in time
lay eggs
give birth to
in turn
prevent...from
6． 挡住(光线)
7． 感到高兴；感到振奋
8． 既然
9． 突发；爆发
10． 密切注视；当心；提防
cheer up
block out
now that
break out
watch out (for)
puzzling
puzzled
puzzle n. 谜；难题　vt.&vi.(使)迷惑；(使)为难
搭配 (1)puzzle _______/_______ sth.苦思冥想
(3)凯伦整个晚上都在想这个问题。
Karen the question all evening.
over
about
was puzzling over
of
masses
【注意】　a mass of/masses of大量的，许多的，此短语既可修饰可数名词，也可修饰不可数名词。
There is --------------------------------------------- in the yard.
在庭院里有很多孩子。

珯 gathering now.
大量的浓烟正聚集。
a mass of children
Masses of heavy smoke are
(3)现代人大多受到电视的影响。
are influenced by television.
The mass of modern people
Please _____ the book where it was.
He _____ in bed all day yesterday, and that was unlike him.
The naughty boy ______ to me that the hen _____ there just now had ______ two eggs 。
Guangzhou ____ in the south of China.
lay
lay
lied
lying
laid
lies
on
one
ahead
情系考场
1. (2010模拟)________， I lost heart in English learning，but my teacher often said to me，“Keep on studying hard, and you’ll succeed________.”
A．At a time；in time　　　　　　　
B．At a time；on time
C．At one time；in time
D．At one time；on time
C
2．(2009年江西景德镇模拟)—Does he often ask you for help?
—Oh，no，only________.
A．all the time B．at one time
C．at a time D．at times
D
活用 用time 的相关短语填空

(3)我马上就回来。
I'll be back __________.
in no time
(4)每次服两粒。
Take two pills _________.
(5)从前他们在这些峡谷中采煤。
__________ they used to mine for coal in these valleys.
at a time
At one time
到了某人做某事的时间
This is the first time sb have done...　　　
　是某人第……次做……(完成时)
each/every time(在从句中作连词)
　　　　　　　　每当……，每次……
It's time for sb to do sth.
It‘s time that sb.did/should do sth.
I thought her nice and honest ____ I met her. (98Sh)
first time B. for the first time
C. the first time D. by the first time
_____ I listen to your advice, I get into trouble.
Every time B. Every time that
C. Each time when D. When that
c
A
■运用：补全下列英文句子。
(1)当心，别把桌子上的纸弄脏了。
____________! Don’t dirty the paper on the desk.
(2)注意一个戴黑帽子的高个子男人。
______________________ in a black hat.
(1) 我们必须小心公共汽车上的小偷。
We must ______________________ on the bus.
7. watch out 注意，当心(单独用于祈使句)
watch out for 密切注意，留意；提防
Watch out
Watch out for a tall man
watch out for the thieves
【高效记忆】
three times as many
as
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。
four times as large as
four times higher than
twice the size of