人教版七年级上语法教案--基数词和序数词
法人贷款-
Numbers
--
语法教案
语法一、基数词
< br>(1)
基数词的构成
---
表示
数目多少的词叫基数词。
1.
1-12
独立成词：
one,
two, three, four, five, six, seven, eight, nine,
ten,
eleven,
twelve
。
2.
13-19(+teen):
thirteen, fourteen,
fifteen
,
sixteen, seventeen, eighteen,
nineteen<
/p>
。两个音节都要重读。
3.
20-90(
整十位数
+ty):
twenty, thirty,
forty
,
fifty, sixty, seventy,
eighty,
ninety
。第一个音节重读。
4.
21-99
间的两位数，先说“十位”
，再说“个位”
，中间要加连字
符
“
-
”
5.
101-999
之间的三位数，先说“百位”
，再加
and,
再加末尾两位数。
e.g:
one hundred and one
nine hundred and ninety-nine
156
—
读
作：
709
—
读作：
6.
1000
以上的大数，
使用计数符号，
每三位加以逗号，
从第一个逗号起单位依次为
thousand, million,
billion.
“万”表达为
ten
thousand
【考考你】
The road is
over___________ meters long.
A. six hundred and fifty-
two
C. six hundred, fifty-
two
B. six
hundreds and fifty-two
D. six hundred,
fifty and two
【关于基数词的重点与考点：
】
基数词表示顺序编号时：名词
+
基数词
，此时两个词的首字母都要大些。
Class Three
the
third classroom
Room 5
Lesson One
【考考你】
Now, everyone, please
turn to Page ______and look at the ______picture.
A.
Twelve; fifth
B.
Twelfth; fifth
C.
Twelve; five
D. Twelfth; five
确数与概数的表达。
确数：基数词
+
单位
+
复数名词：
two hundred students
200
名学生
概数：单位加
S
+of+
复数名词：
thousands of
visitors
成千上万的游客
< br>“
整十加
S
”
< br>
用于表示
“
几十年代
”
或
“
某人几十多岁时
”
In
the 1960s, people had to lead a poor life.
在
20
世纪
60
年代，人们不得不过着贫困的生活。
He invented many things in his
twenties.
他在
20
多岁时就发明了很多东西。
【考考你】
My grandma is in her
____________(
八十多岁
),but she
can still take care of herself.
语法二、序数词
(1)
序数词的构成
表示顺序先后的数词叫序数词。
There are three persons in classroom.
Third
第三
1
First; second; third;
序数词大多由基数词变形而成，所以掌握了基数词和基变序的方法，序数词也就简单啦。< p>
基变序的方法：
基变序，有规律，词尾加上
th;
four-fourth
six-sixth
一二三，单独
记；八减
t,
九去
e;
first, second, third
eighth, ninth
ve
变
f
；遇
y
变<
/p>
ie,
词尾再加
th
。
five-fifth
twelve-twelfth
twenty-twentieth
若遇几十几，只变个位就可以。
twenty-two --------- twenty-second
注意：
four
—
fo
urteen
—
forty
—
forty-two
nine
—
nineteen
—
ninety
—<
/p>
ninety-nine
fourth
—
fourteenth
—
fortieth
—
forty-second
ninth
—
nineteenth<
/p>
—
ninetieth
—
ninety-ninth
【考考你】
--How
was your weekend?
--
Great! It was
my grandpa’s ______birth
day. We enjoyed
ourselves.
A.
seventy
B. seventieth
C. the
seventieth
D.
seventeenth
【序数词的考点：
】
序数词表示顺序
时
< br>,
其前要加
the,
后面接单数
名词。
The second
picture
is very beautiful.
The fourth student
comes
from America.
【考考你】
Jack got the _______________(four)
place in the 100-metre race.
表示日期中的
“
日
”
。
如
2013
年
9
月
19
日，表示为
“September
19
th
,2013”;
读作：
September the nineteenth,
two thousand
and thirteen
<
/p>
序数词的缩写：
1
st
< br>
2
nd
3
rd
4
th
20
th
63
rd
78
th
序数词表示编号顺序时：
Unit One= the first unit
Part Two= the second part
几种特殊数词的表示方法：
普通分数：
）
eg:
1/3: one third
2/3: two thirds
1/2:
读作
a half
或
one half
1/4
读作
a quarter
或
one
fourth
eg: Two thirds of the earth
is covered by water.
百分比：基数词
+percent(per cent)
2%
读作
two percent
27%
读作
twenty-seven percent
eg:
Over 25 percent of the surface of the ground is
covered with grass.
习惯表达
one and a half apples= one apple and a
half
一个半苹果
half an apple
半个苹果
one
or two apples= one apple or two
一两个苹果
10:30
half past ten
10:25
twenty
–
five past
ten
9:45
fifteen to ten
或
a quarter to
ten
2
语法三、加减乘除
---
数字的运算
加法：
3 plus 9 is/equals 12.
减法：
9
minus 3 is/equals 6.
乘法：
3
multiplied by 9 is/equals27.
除法：
9 divided by 3 is/equals
3.
=:
is/
equals
+:
plus
-:minus
*:
multiplied
by
/:
divided
by
都是表示加减乘除的介
词。用于读出已列的算式。
eg: --What is 2 plus 3?
--2 plus 3 is
5.
而出题者通常用“加减乘除”的动词原形来开头
,
构成祈使句
,
命令
做题者。
Add A and B
Subtract A from B
Multiply A by B
Divide A by B
If
we add 2 to 5, we can get 7.
Multiply 2 by 3, please.
【考考你】
Every week, Xiao Ying
plans to use 180 minutes to practice her
listening.
According to the table, it
takes her _________hour(s) to do it on weekdays.
Xiao Ying’s listening plan
Day.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
Sun.
Minute
20
25
25
20
20
40
A.1
B.2
C. 3
【即学即练：
】
(1)
用英语读出下列算式：
4+5=9
6*6=36
48-11=37
15/3=5
语法针对练习
一、用所给词的适当形式填空
1.
Tom
’
s mom gave
him a nice gift on his
________
(eight)birthday.
2.
--What
’
s the date
today?
--It
’
s September
the _____________(thirty).
3.
Mr. Wu asked
his students to turn to the __________(fifty-
nine)page.
4.
He
opened up his own company in his
______________(twenty).
5.
How happy we are living in the
________
(twenty-one)
century!
二、根据汉语提示完成句子。
1.
Kate and Mary
are in __________(
三年级五班
).
2.
I was born in
Shanghai on _________________(1999
年
10
月
17
日
).
3.
She
’
s been away
from London for
________________(
三天半
).
4.
It was a
lonely village in_________(20
世纪
< br>80
年代
)
，
< br>but now there are many tall buildings in it.
5.
Take the
______________(
第二
)turning on
your left and you
’
ll see the
museum.
三、单项选择
1.
There are
______workers in this factory.
3