广州沪教牛津版八年级上册英语Unit 2 Numbers--基数词和序数词知识点总结
另类美女图片-
一
课堂重点知识讲解
Step2
单词和词组
instructions
指示，命令
amount
数量
realize
明白，了解
wise
充满智慧的，聪明的
double
（使）加倍
promise
许诺；承诺
correctly
准确无误地；正确的
check
检查
prize
奖赏；奖品
copy
复制，抄写
a long time
ago
很久以前
traffic
accident
交通事故
challenge
sb.
to
sth.
向某人挑战
copy down
抄写
and so on
等等
promise sb to
do sth
向某人承诺做某
事
instead of
代替
/
而不是
It’s wise of
sb
to do sth
某人做某事是明智的
win
first
prize
得到一等奖
so
that
以便于，以此来
练一练：
1. I am
prepared to lend him the money if he p
to pay it back.
2. Do look out for spelling mistakes
when you c
your work.
3. He won first p
in
a model making competition.
’
t c
other
students
’
homework . You
should do it by yourself.
5.
他投罚球的技术很好，你要向他挑战吗？
His
free throw is perfect. Do you
it?
6.
上周，我在网上买了一本书，比在商店买的便宜多了。
I bought a book online last week .It
was
that in the shop.
7.
经过两年的研究，我们终于成功地发明了这种新机器。
After two year
’
s
study , we this
new
machine.
8.
确实这种灯更贵。
It is
true that these light bulbs are
.
9.
我学习很用功，以至于能通过考试。
I study hard
I
can pass the exam.
10.
你
这样浪费水资源是不理智的。
It
’
s not
you
to waste water.
1
Step 2
基数词
1.
基数词的读法
.
1)1---12 : one two three
four five six seven eight nine ten eleven twelve
2)13---19:
词尾加
-teen :thirteen fourteen
fifteen sixteen seventeen eighteen nineteen
3)20,30,40,50,60,70,80,90 :
逢十词尾加
-ty :twenty thirty
forty fifty sixty seventy eighty ninety
4)21----99:
在十位与个位之间加连字符
.
21--- twenty-one
99---
ninety-nine
5)101---999
:
先说几百
,
再加
and
,
再加末尾两位数或个位数
.
101---one
hundred and one
238----two hundred
and thirty-eight
6)1000
以上的数
:
先将数字
从右往左数
,
每三位数用一个逗号隔开
,
从右往左第一个逗号表示
“千”
读
thousand
第二个逗号表示
“百万”读
million
第三个逗号表示
“十亿”读
billion
18,657,421---eighteen million ,six
hundred and fifty-seven thousand ,four hundred and
twenty-one.
关于岁数的表达，例如
two
years old
和
two-year-old
只可以做表语意思是
两岁。如
I am two
years old.
two-year-old
只可以做定语意思是两岁的。如
I
am a two-year-old boy.
Step 3
序数词
序数词。表示人或事物的顺序
的词
.
基数词变序数词口诀
:
基变序
,
有
规律
,
词尾要加
th .
一二三
,
特殊记
,
(first second third )
八去
t , <
/p>
九去
e,ve
要用
f
替
.ty
变作
tie,
再加
th
莫忘记
.
若遇几十几
,
只变个
位就可以。
基数词和序数词对照表
字
数
one
two
th
ree
词
数
基
first
second
th
ird
词
数
序
写
缩<
/p>
1
2
3
1th
2nd
3rd
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
30
40
four
fi
ve
six
seven
eight
nin
e
ten
eleven
twel
ve
thirteen
fourteen
fifteen
sixteen
seventeen
eighteen
nineteen
twenty
twenty-
one
twenty-
two
thirt
y
fort
y
four
th
fi
fth
six
th
seven
th
eight
h
nin
th
ten
th
eleven
th
twel
fth
thirteen
th
fourteen
th
fifteen
th
sixteen
th
seventeen
th
eighteen
th
nineteen
th
twentieth
twenty-
first
twenty-
second
thirt
ieth
fort
ieth
3
4th
5th
6th
7th
8th
9th
10th
11th
12th
13th
14th
15th
16th
17th
18th
19th
20th
21st
22nd
30th
40th
90
100
ninet
y
hundred
ninet
ieth
hundred
th
90th
100th
练一练：
一、写出对应的基数词和序数词
1.
九个苹果
______________ 2.
十三本书
________________3.
第四
天
_______________
4.
第
20
周
___________
____5.
第
35
层
____________________ 6.
219__________________
二
单项选择。
1. There
are ____ students in our school.
A. four
—
hundred
and forty
—
five
B. four hundred and
forty
—
five
C.
four hundreds and forty
—
five
D. four hundred
and forty five
2. . How many people
will come to Beijing next year?
It
’
s
hand to say.
_______people,
I think.
A.
Million of
B. Millions of
C. Millions
D.
million
______ films were shown during
the 5th Shanghai International Film Festival.
A. two hundred of
B. two hundreds
of
C. two hundred
D. two hundreds
boy always stays there for
___________.
A. one and half hour
B.
one and a half hour
C. one and half hours
D.
one and a half hours
5.__________foreigners visit the Great
Wall every year.
A. Thousand of
B. Thousand . C .Thousands
D. Thousands of
6. Where are the
students
？
Are
they in ___________?
A. the Room 406
B. Room 406
C. the 406 Room
D. 406 Room
is ____ of a
year.
A. the fifth months B. the fifth month
C.
the five months
D. the five month
8. We live in ______.
A. the twenty-first century
B. the century
twenty-one
C. century
twenty-one
D. the century twenty-first
9. September is the _____month of the
year.
4