(共19张PPT)
数词
课前准备:
1.课堂笔记本
2.黑笔
3.草稿本
Numeral
学习目标
1. 了解数词的定义和分类
2. 掌握基数词和序数词的基本形式
3. 掌握基数词和序数词的常见用法
八年级英语语法专题讲解—数词
数词的定义和分类
数词就是表示事物的数量和顺序,可以分为基数词和序数词两种。
基数词用在可数名词前表示事物的数量。
序数词表示是事物的顺序。
八年级英语语法专题讲解—数词
1.0-12的基数词是独立的单词
zero, one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve
2.13-19的基数词以 结尾
teen
thirteen , fourteen, fifteen , sixteen, seventeen, eighteen, nineteen
3.20-90的基数词以 结尾
ty
twenty , thirty ,forty , fifty , sixty , seventy , eighty, ninety
4.十位数与个位数之间要加连字符号“-”
28: 97:
twenty-eight
5.三位数以上的基数词,在百位和十位(若十位是0,则和个位)之间加and
145: 209:
ninety-seven
one hundred and forty-five
two hundred and nine
基数词的形式
7.百 千 百万 十亿
45,633,487,920
hundred
从后往前数每三位加一个逗号
thousand
forty-five billion,
thousand
million
billion
million
billion
6. 英语在表示“万”和“亿”时,要按十进位法来推算。
hundred
23,548
twenty-three thousand,
five hundred and forty-eight
123, 358, 765
one hundred and twenty-three million,
three hundred and fifty-eight thousand,
seven hundred and sixty-five
10,000
100,000,000
读一读
读一读
读一读
12,345,687,910
twelve billion,
ten thousand
a(one) hundred million
six hundred and thirty-three million,
four hundred and eighty-seven thousand,
nine hundred and twenty
, nine hundred and ten
three hundred and forty-five million,
six hundred and eighty-seven thousand,
基数词的用法
1. 编号表达法
简单的编号用序数词、基数词都可以,复杂的编号多用基数词。
2.电话号码
电话号码的读法为顺次读出数字, “0”可读作“o”或“zero”。数字连续重现可用“double(双)”。656-678-05
第三课
Lesson Three
the third lesson
第五页
Page Five
the fifth page
第52路公交车
Bus No. 52
the No. 52 bus
306房间
Room 306
six five double six seven eight o (或zero) five
说一说
用基数词表示:名词(前不加冠词,
首字母大写)+基数词(首字母大写)
用序数词表示:the+序数词+名词
14. In which office can students sign up(报名)?(2019金华中考听力)
A. 203 B.302 C.320
7. What's the man's telephone number (2019绍兴市中考听力)
A. 674-3653 B. 647-3653 C. 674-3635
随学随练
听录音,选图片。
1. What's Dave's telephone number A. B. C.
598-6873
598-5573
589-2673
2. Which bus will they take to go to the zoo A. B. C.
3. What class is Betty in A. B. C.
125
215
205
Class Three, Grade Nine
Class Three, Grade Eight
Class Seven, Grade Eight
3. 钟点表示法
1. 顺读法:
2)表示“差几分几点”,半小时以上,介词用 ,如:10:40 。
2. 逆读法: 。
1)表示“ ”,半小时及半小时以内,介词用 , 如:8:15 。
half
一刻钟:
半小时:
整点:
a quarter
4.half的用法
半小时:
half an hour
两个半小时:
two and a half hours=two hours and a half
一个半小时:
6:05
six five
3. 表示时间的词。
one and a half hours= one hour and a half
six thirty。
past
fifteen past eight
to
twenty to eleven
o'clock
先时后分
先分后时
表示“ ”, 如:6:30
几点几分
几点过几分
1.听对话选图片(2020温州复习导引)
听力原文:
W: Sam, hurry up. It's already 8:20.
M: Oh no, the class will begin in 10 minutes.
I'm going to be late.
2.Sometimes she spends 49._____(一半,半数) an hour collecting rubbish.(2019温州中考词汇运用)
half
随学随练
1. ——It's time for dinner, Alice!
—— Oh,it's ________. I'm coming, mum.
A. twenty past eleven B. a quarter to seven
C. half past two D. a quarter to eleven
2. ——The film will begin at two o'clock this afternoon. Shall we meet at ________ at the cinema gate
——Ok, Tony. See you later.
A. half past one B. half past two
C. two to three D. fifteen to one
3. The student will complete his homework in ________.
A. two and half an hour B. two hours and half
C. two and a half hour D. two and a half hours
4. We have studied at this school for ________.
A. two and a half years B. two year and a half
C. two years and half a year D. two and a half year
在五岁时
at the age of five
1.表示在几岁时,用at the age of +基数词,如:在6岁时 。
2.表示在某人几十岁时,用in one's + 整十的基数词复数形式
如:在他八十几岁时
在她五十岁时
in her fifties
3.表示一个几岁的人,用a+基数词-year-old +人,如:
a three-year-old boy
一个三岁的男孩
数词+名词作定语,用数词-单数名词,如:一个七天的假期 a seven-day holiday.
2. 年龄的表示法
在三十二岁时
at the age of thirty-two
说一说
说一说
在我四十岁时
in my forties
说一说
一个十二岁的男孩
a twelve-year-old boy
一位六十岁的男士
a sixty-year-old man
at the age of six
in his eighties
1. The _______ action film has attracted millions of young people to the cinema.
A. 130-minute B. 130-minutes C. 130 minute D. 130 minutes
2. Tu Youyou was born in 1930, she won the Nobel Prize in her ________ in 2015.
A.seventies B. sixties C. fifties D. eighties.
3. In China, the children normally go to a middle school __________.
A. at the age of twelve B. at the age of fourteen C. at the age of sixteen D. at the age of fifteen
随学随练
3.年份的表示法
4. 年代的表示法
in the +整十基数词的复数形式/所有格形式,表示年代,
如:在19世纪70年代
直接用基数词表示,一般写成阿拉伯数字,
如:1963写为 ,一般两位两位地读 ;
读一读
1915写作
1915
;读作
nineteen fifteen
或
nineteen hundred and fifteen
2020写作
2020
;读作
two thousand and twenty
或
twenty twenty
1905写作
1905
;读作
nineteen o five
或
nineteen hundred and five
在20世纪80年代
读一读
in the 1980s/1980's
在21世纪20年代
in the 2020s/2020's
1963
nineteen sixty-three
整千的后读 ,前常加 ,如2000 读作 。
thousand
the year
the year two thousand
也可以整百的后读 ,如:1963 ;
hundred
nineteen hundred and sixty-three
in the 1870s/1870's
2020英语听力口语复习导引P18 篇章朗读
随学随练
基数词代表分子,序数词代表分母,读的时候先读分子,后读分母。
2. 当分子大于1时,分子的基数词用单数,分母的序数词用复数。
3. 使用half 和quarter表示二分之一、 四分之一 、 四分之三。
3. 分数表示法
写一写
写一写
1. 当分子等于1时,分子的基数词用单数,分母的序数词也用单数,分子为one可换成a。
one(a) half
two fifths
one/a third
one/a fifth
four ninths
one/a sixth
three sevenths
one (a)fourth
one(a) quarter
three fourths
three quarters
随学随练
——Has Jane finished reading the novel
——Not yet. There is still _______of it left.
A. three fourths B. three four C. third fourths D. third four
1.表示具体数目时,hundred, thousand, million 和billion 不用复数,如200写作 。
2.表示不确定的数目时用复数,如hundreds of...(数以百计的......)+复数名词,可以用many/several修饰,但不能与具体数目连用。
成千上万的......
数百万的......
数十亿的......
thousands of...
millions of...
billions of...
5.hundred, thousand, million, billion用法
two hundred
3,000
three thousand
4,000,000
four million
练一练
5,000,000,000
five billion
练一练
随学随练
1. The earth is home to ______animals so we should protect it well.
A. million B. millions C. two million D. millions of
2. ——How much is the new car
——About five hundred and twenty _________yuan.
A. thousand B. thousands of C. thousands D. the thousand
序数词的形式
1. 序数词1-3是独立的单词。
4. 21以上非整基数词变序数词,只需将其 数变成 , 数仍用 。
first, second, third
2. 序数词4-19是在基数词后面加 构成,
3. 整十的基数词20-90变序数词时, 。
21th 76th 288th
th
其中 , 是不规则变化。
four five six seven eight nine ten eleven
fourth fifth sixth seventh eighth ninth tenth eleventh
twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen
twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth
基数词
序数词
基数词
序数词
fifth, eighth, ninth, twelfth
基数词 twenty thirty forty fifty sixty seventy eighty ninety
序数词 twentieth thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth
变y为i再加“eth”
个位 序数词 其它位 基数词
twenty-first
seventy-sixth
two hundred and eighty-eighth
序数词的用法
1. 生日表示法
her sister's sixth birthday
她妹妹的六岁生日
表示某人几岁生日时,
日期用序数词表示,
日期
写作
读作
3月8日
5月21日
1993年10月25日
March 8th;8th March
May 21st; 21st May
October 25th,1993;25th Octomber,1993
March the 8th=the 8th of March
May the 21st=the 21st of May
读作:月+ the+日(序数词)+年或 the +日(序数词)+of+月+年。
练一练
他的六十岁生日
his sixtieth birthday
我妈妈的三六岁生日
my mother's thirty-sixth birthday
2. 日期表示法(英式)
写作:月+日(序数词)+年或日(序数词)+月+年。
October the 25th,nineteen ninety-three
练一练
用one's + 序数词+birthday
随学随练
1. Li Ming will be _______. His parents are going to have a party for his ________birthday
A. sixteen; sixteenth B. sixteenth;sixteenth
C. sixteen; sixteen D. sixteenth; sixteen
2. ______ World Cup was held in Brazil on ________.
A. 20th; 2014 B. 20th; June 13th, 2014
C. The 20th; 2014, June 13th D. The 20th; June 13th, 2014
3. —— How old is your son
—— ________. We had a special party for his ________birthday last Sunday.
A. Nine; nine B. Nine; ninth
C.Ninth; nine D. Ninth; ninth
4. ——Welcome to Los Angeles. Have you ever been here
—— Sure. I visited this city three years ago so this is my _______ time.
A. first B. second
C. third D. fourth
课堂小结
数词
定义
分类
基数词
序数词
基数词的形式
基数词的用法
序数词的形式
序数词的用法
独立单词
基数词以“teen结尾”
......
编号表达法
电话号码
......
独立单词
基数词后加“th”
......
生日表示法.
日期表示法
....
Thank you!