Lesson 38
The World Is a Big Place
Unit 7
Know Our World
Lesson 38
The World Is a Big Place
课前自主预习
课堂互动探究
Unit 7
Know Our World
单词闯关
1.
行星
________
2.
十亿;千兆
________
3. n
.总计;总数
adj.
总的;总计的
________
4.
增加;增大
________→________(
反义词
)
5.
表面;表层
________
billion
planet
Lesson 38
The World Is a Big Place
课前自主预习
total
increase
decrease
surface
单词闯关
6.adj.
印度的
n
.印度人
________→________(n.
印度
)
7. Atlantic ________
8. Arctic ________
大西洋
(
的
)
Indian India
Lesson 38
The World Is a Big Place
北极的
短语
互译
1.on the earth ____________
2.all year round ____________
3.the number of… ____________
4.
总计;合计;总共
____________
5.
被
……
覆盖
____________
6.
三分之二
____________
在地球上
.……
的数量
全年
in total
be covered with…
two thirds
Lesson 38
The World Is a Big Place
句型在线
1.
并且截止到
2050
年,世界人口可能将达到
90
亿。
And ________ 2050, the world's population ________ ________ 9 billion.
2.
这些干旱的地方被称作沙漠。
These dry places ________ ________ deserts.
by may reach
are called
Lesson 38
The World Is a Big Place
句型在线
3.
在那些地方生存很不容易。
________ ________ not easy ________ ________ ________ those places.
4.
为了我们的孩子,也为了我们孩子的孩子,一定要好好地对待它!
It must ________ ________ well for our children and for our children's children, too
!
It is to live in
be treated
Lesson 38
The World Is a Big Place
词汇点睛
课堂互动探究
● increase v.
增加;增大
[
观察
]
It is increasing very quickly.
它
(
世界人口
)
正在非常迅速地增长。
Reading can increase your knowledge.
阅读可以增长你的知识。
[
探究
]
increase
意为“增加,增大”,可用作及物动词,也可用作不及物动词。用作及物动词时,常接名词作
________
。
宾语
Lesson 38
The World Is a Big Place
活学活用
根据汉语意思完成句子
人口正在非常迅速地增长。
The population is ________ very quickly.
increasing
Lesson 38
The World Is a Big Place
●
1
And by 2050, the world's population may reach 9 billion.
并且截止到
2050
年,世界人口可能将达到
90
亿。
[
探究
]
(1) “by
+时间”表示“到
……
为止;不迟于
……”
。根据不同的时间,使用不同的
________
。
(2)billion
意为“十亿”,前面有
________
数字时,用单数形式;后面加
________
表示概数时,用
________
形式。例如:
two billion 20
亿
billions of
数十亿
句型透视
时态
具体
of
复数
Lesson 38
The World Is a Big Place
[
拓展
]
与
billion
用法相同的词还有
hundred(
百
), thousand(
千
), million(
百万
)
。
Lesson 38
The World Is a Big Place
活学活用
1
.
2017·
潍坊
—“Food Safety” has become one of the hottest topics
recently.
—Yeah, it receives________ Internet hits a day.
A
.
thousands
B
.
thousands of
C
.
thousand
D
.
hundreds
B
Lesson 38
The World Is a Big Place
●
2
We can't live in water, and only about one third of our planet is land.
我们不能居住在水里,而我们的星球只有三分之一的面积是陆地。
[
探究
]
one third of our planet
意为“我们星球的三分之一”,
one third
表示分数
1/3
。英语中的分数用数词来表示:分子用基数词,分母用序数词。如果分子大于
1
,则分母用复数形式。分子和分母中间可加连词符,也可不加。表示“一半”时,常用
half
。例如:
2/7 two sevenths(two-sevenths)
1/2 one half
句型透视
Lesson 38
The World Is a Big Place
[
拓展
]
分数修饰名词作主语时,谓语动词的单复数要根据分数所修饰的名词的单复数来定。
Three fourths of the money has been spent on books.
四分之三的钱用来买书了。
Two thirds of the students in my class are boys.
我们班里三分之二的学生是男孩。
Lesson 38
The World Is a Big Place
活学活用
2
.
2017·
宿迁
—Mum, ________ of my classmates ________ glasses.
—Oh, my God. You need to protect your eyes well.
A
.
three-fourths; wears
B
.
three-fourth; wear
C
.
three-fourth; wears
D
.
three-fourths; wear
D
Lesson 38
The World Is a Big Place
【
解析
】
在英语中,分数的分子用基数词,分母用序数词;如果分子大于
1
,则分母用复数形式。
3/4
即
three-fourths
,排除选项
B
、
C
。此句的主语是
my classmates
,谓语动词要用复数形式。句意:
“
妈妈,我四分之三的同学都带眼镜。
”“
哦,天哪。你需要好好保护好你的眼睛。”故选
D
。
Lesson 38
The World Is a Big Place
●
3
It must be treated well for our children and for our children's children, too!
为了我们的孩子,也为了我们孩子的孩子,一定要好好地对待它!
[
探究
]
must be treated
为含有情态动词的被动语态形式。含有情态动词的被动语态构成形式为“情态动词+
be
+
________________”
。例如:
The trees should be treated well.
树木应该被好好地对待。
句型透视
动词的过去分词
Lesson 38
The World Is a Big Place
[
探究
]
An art school may be opened next year.
明年可能开办一所艺术学校。
This book must not be removed from the library.
本书不得带出图书馆。
She might be sent to work abroad.
她可能被派往国外工作。
Lesson 38
The World Is a Big Place
活学活用
3
.
Children should ________ to be honest from a young age.
A. educate
B. be educated
C. punish
D. be punished
B
Lesson 38
The World Is a Big Place