7B Unit 1 Dream Homes Revision(Grammar)课件(共38张PPT)

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名称 7B Unit 1 Dream Homes Revision(Grammar)课件(共38张PPT)
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版本资源 牛津译林版
科目 英语
更新时间 2022-04-18 15:01:45

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(共38张PPT)
7B Unit 1 Dream homes
Revision: Grammar
01
03
一、基数词
Cardinal numbers
三、数词拓展
Extension
数词 (Numeral) / nju m r l/
02
二、序数词
Ordinal numbers
01
基数词
cardinal / kɑ d nl/ numbers
(1)1-12 的基数词是独立的单词, 有其各自的形式。

(2)13-19 的基数词以-teen结尾, 在相应的“几”的基数词后加-teen, 但是 thirteen, fifteen, eighteen的拼写较特殊。
1 2 3 4 5 6
one two three four five six
7 8 9 10 11 12
seven eight nine ten eleven twelve
13 14 15 16 17 18 19
thirteen fourteen fifteen sixteen seventeen eighteen nineteen
teen + age + (e)r
teenager /'ti ne d (r)/
1






n. (13岁到19岁) 青少年
(3)整十数的基数词以-ty结尾, 一般是在相应的“几”的基数词后
加-ty, 但是 twenty, thirty, forty, fifty, eighty 的拼写较特殊。
20 30 40 50
twenty thirty forty fifty
60 70 80 90
sixty seventy eighty ninety
1






(4)几十几:在十位数与个位数之间加连字符“-”
读法:先读十位的“几十”, 再读个位的“几”
写法:24 twenty-four 99 ninety-nine

(5)几百几:在百位和十位 (若无十位, 则和个位) 之间用and连接
读法:先读百位, 再读十位的“几十”, 再读个位的“几”
写法:648
101
200
1






six hundred and forty-eight
one hundred and one
two hundred
(6)四位数及以上:从右到左, 每3个数为一个单位加一个逗号, 依次是 thousand (千), million (百万), billion (十亿) 和 trillion (万亿, 兆) 。不用复数形式, 不加s。读的时候, 从左往右, 按之前的方法读。
1







9 9 3 6 8 6 8 9 2 5 3
ninety-nine billion, three hundred and sixty-eight million, six hundred and eighty-nine thousand, two hundred and fifty-three


million
thousand
billion
Pay attention!
在朗读、书写较大的数字时, 我们可以先做什么?
从右往左 (从后往前), 每三位标上一个逗号。
2






1 985
one thousand, nine hundred and eighty-five
2 057 039
two million, fifty-seven thousand, and thirty-nine
25 600 374 168
twenty-five billion, six hundred million, three hundred and seventy-four
thousand, one hundred and sixty-eight
,
,
,
,
,
,
(1)表示数量、数目
天安门广场占地44万平方米。
Tian’anmen Square has an area of 440,000 (four hundred and forty thousand) square metres.
莫斯科的红场面积大约9万1千平方米。
Red Square in Moscow is about 91,000 (ninety-one thousand) square metres in size.
2






(2)表示时刻
① 直接法:时在前, 分在后, 按顺序读
6:30 six thirty 7:59 seven fifty-nine
② 间接法:分在前, 时在后
分钟小于等于30, 用 past:分钟 past 小时, 几点过几分
6:25 twenty-five past six
分钟大于30, 用to:差分钟 to 小时+1, 差几分到几点
9:56 four to ten
注:表示“整点”, “半点”和“一刻钟”时, 可用 o’clock, half 和 quarter
6:00 six (o’clock) 10:30 half past ten
8:15 5:45
2






a quarter past eight
a quarter to six
2






注:上午 a.m. 下午 p.m.
What’s the right time
A. 10:40 B. 10:20 C. 10:30
B
A:What’s time by your watch
B:It’s ten thirty. But my watch is ten minutes fast.
注:听力中出现时间、数量等, 数的加减
What time is it What do you often do at the time
It’s 11 am. I often have lessons at the time.
It’s 11 pm. I often go to sleep at the time.
(3)表示年龄
① 岁数 + year(s) old (可以省略)
他十岁了。He is ten years old. = He is ten.
注:He is one year old. It is one month old.
我7岁时会游泳了。
I could swim when I was seven years old.
I could swim at the age of seven.
② 岁数-year-old (不可以省略, 形容词, year不加s)
He is a ten-year-old boy. 他是一个十岁的男孩。
He is a one-year-old boy. He is an 8-year-old / 11-year-old boy.
2







(4)表示年份、年代
年份:以百位数和十位数为间隔, 从左往右读
794年 seven (hundred and) ninety-four
1999年 nineteen ninety-nine
2008年 two thousand (and) eight
年代:in the + ... 整十的复数
在20世纪90年代 in the 1990s in the nineteen nineties
在某人几十多岁的时候:in one’s + 整十的复数
在他四十多岁的时候 in his forties
2






注:公元前 BC, 公元 AD
0-99年, 这100年为1世纪
100-199年, 为2世纪
以此类推
1990-1999年, 这10年为90年代
40-49岁之间, 都是40多岁
(5)表示顺序、编号 (基数词放在名词后面)
第一单元 Unit 1 第20页 Page 20
106房间 Room 106 2路汽车 the No. 2 bus 第十中学 No. 10 Middle School
我是七年级一班的学生。
I am a student in Class One, Grade Seven / Class 1, Grade 7.
(6)表示电话号码
前三后四或者四个一组, 可单个读, 两个相同数字或者三个相同数字可以用 double, triple。
62246555 six double two four, six triple five
2






(7)表示算式(算式做主语时, 谓语动词用单数)
加 and / plus, 减 minus, 乘 multiply, 除 divide, 等于 equal
3+5=8 Three and five equal(s) / is eight.
一加二等于几? What’s one plus two
等于三。 It’s three.
(8)表示倍(次)数
一倍 (次) once, 两倍 (次) twice, 两倍 (次) 以上用 “基数词+times”表示。
亚洲的面积是欧洲的四倍。Asia is four times as large as Europe.
这个教室比我们的教室大两倍。This classroom is twice bigger than ours.
2






注:泛指的数目
hundred, thousand, million 等可以加 s, 后面加 of 构成短语。这些词不能被具体数字修饰, 但可被 many, several, a few 等词修饰。
hundreds of 数百 many hundreds of 成百上千
thousands of 数千 millions of 数百万
注:数字、算式或含有数字的路程、距离作主语, 谓语动词用单数。
Five hours is not a long time. Five times five is twenty-five.
注:数词+量词+形容词
1.70 metres tall 2 kilos heavy 3 kilometers long
加拿大国家电视塔有1,815 英尺高。
The CN Tower is 1,815 feet tall.
2






(2021·西藏·中考真题)
Qomolangma is the highest mountain in the world. It is over eight ________ meters high.
A. thousands of B. thousand of C. thousands D. thousand
答案:D
句意:珠穆朗玛峰是世界上最高的山峰。它有8000多米高。
(2021·辽宁鞍山·中考真题)
— We should try to devote (献身于) ourselves to our country like Yuan Longping.
— I think so. He still worked on the research into agriculture (农业) at the age of ________.
A. eighties B. eightieth C. eighty D. eighty-year-old
答案:C
句意:——我们应该努力像袁隆平一样为祖国奉献自己。
——我想是的。他八十岁时仍在从事农业研究。
(2021·山东滨州·中考真题)
— China is a great country with a history of about five ______ years.
— Yes. And ______ of foreigners come to visit it every year.
A. thousand; thousand B. thousands; thousands
C. thousand; thousands D. thousands; thousand
答案:C
句意:中国是一个有着约五千年历史的伟大国家。
是的。每年都有成千上万的外国人来参观。
(2021·黑龙江绥化·中考真题)
My aunt became a nurse in her _______ and she still loves her job now.
A. twenties B. twentieth C. twenty
答案:A
句意:我姑姑二十多岁就当了护士,现在她仍然热爱她的工作。
(2021·甘肃天水·中考真题)
— What’s twenty and fifty
— It’s ________.
A. fifty B.seventy C.eighty D.ninety
答案:B
句意:二十加五十等于多少?七十。
— What’s the age of your sister
— She is ________. She is ________ girl.
A. eight-year-old; a eight years old B. eight-year-old; an eight years old
C. eight years old; an eight-year-old D. eight years old; an eight-years-old
答案:C
句意:你妹妹多大了?她八岁了。她是一个八岁的女孩。
— How do you say 9:15
— ________.
A. A quarter to nine B. A quarter past nine C. A quarter to ten D. Fifteen nine
答案:B
句意:你怎样表达9:15?九点一刻。
— What class are you in
— ________.
A. Class ten, Grade seven B. class ten, grade seven
C. Class Ten, Grade Seven D. Grade Seven, Class Ten
答案:C
句意:你在几班?七年级十班。
02
序数词
ordinal / d nl/ numbers
(1)1-12 的序数词, 注意first, second, third, fifth, eighth, ninth, twelfth

(2)13-19 的序数词, 在 teen 后直接加 th
1 2 3 4 5 6
one two three four five six
first second third fourth fifth sixth
7 8 9 10 11 12
seven eight nine ten eleven twelve
seventh eighth ninth tenth eleventh twelfth
thirteen fourteen fifteen sixteen seventeen eighteen nineteen
thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth
1






(3)第几十的序数词变化, 需要将 y 变为 ie, 再加 th
(4)表示第几十几, 第几百几十几时, 需要将个位的数词变为序数词
1






20 twenty 30 thirty 40 forty 50 fifty
twentieth thirtieth fortieth fiftieth
60 sixty 70 seventy 80 eighty 90 ninety
sixtieth seventieth eightieth ninetieth
基数词 序数词
21 twenty-one twenty-first
99 ninety-nine ninety-ninth
144 one hundred and forty-four one hundred and forty-fourth
基数词 序数词 简写 基数词 序数词 简写
1 one first 1st 13 thirteen thirteenth 13th
2 two second 2nd 14 fourteen fourteenth 14th
3 three third 3rd 15 fifteen fifteenth 15th
4 four fourth 4th 16 sixteen sixteenth 16th
5 five fifth 5th 17 seventeen seventeenth 17th
6 six sixth 6th 18 eighteen eighteenth 18th
7 seven seventh 7th 19 nineteen nineteenth 19th
8 eight eighth 8th 20 twenty twentieth 20th
9 nine ninth 9th 21 twenty-one twenty-first 21st
10 ten tenth 10th 22 twenty-two twenty-second 22nd
11 eleven eleventh 11th 23 twenty-three twenty-third 23rd
12 twelve twelfth 12th 24 twenty-four twenty-fourth 24th
1






基变序有规律
词尾加上th
一二三
特殊记
八去t九去e
ve要用f替
ty将y改成i
th前面有个e
若是几十几
前用基后用序
基数词 序数词 简写 基数词 序数词 简写
30 thirty thirtieth 30th 100 one hundred one hundredth 100th
40 forty fortieth 40th 101 one hundred and one one hundred and first 101st
50 fifty fiftieth 50th 120 one hundred and twenty one hundred and twentieth 120th
60 sixty sixtieth 60th 1000 one thousand one thousandth 1000th
70 seventy seventieth 70th 10000 ten thousand ten thousandth 10000th
80 eighty eightieth 80th 100000 one hundred thousand one hundred thousandth 100000th
90 ninety ninetieth 90th 1000000 one million one millionth 1000000th
1






(1)表示顺序、编号:前面必须加the, 或者其他限定词
第一单元 the first unit 第20页 the twentieth page
他是第一个到校的学生。 He is the first student to get to school.
这是我第一次到这儿。 It is my first time to come here.
(2)表示日期:英式美式有不同
英式:4月30日 日+月 30(th) April 或者 the thirtieth of April
美式:4月30日 月+日 April 30(th) 或者 April the thirtieth
(3)序数词用于最高级的表达中:the+序数词+最高级+名词单数
在中国, 黄河是第二长河。
The Yellow River is the second longest river in China.
2






注:序数词前不用the的情况
(1)表示“又一, 再一”时
我们将再试一次。 We’ll try a second time.
(2)序数词前有物主代词时
这是我的第十五个生日。 This is my fifteenth birthday.
(3)用于一些固定搭配时
首先 first of all at first 当初
(4)在日期表达中
九月一日 September (the) first
......
2






(2021·内蒙古内蒙古·中考真题)
The Communist Party of China is 100 years old this year. We will celebrate her ________ birthday on July 1st.
A. hundred B. the hundred C. hundredth D. the hundredth
答案:C
句意:中国共产党今年已经100岁了。我们将在7月1日庆祝她的百岁生日。
(2021·辽宁营口·中考真题)
He got ________ birthday cakes on his ________ birthday.
A. second; fifteen B. two; fifteen C. second; fifteenth D. two; fifteenth
答案:D
句意:他15岁生日时得到了两个生日蛋糕。
(2021·贵州铜仁·中考真题)
There are ________ floors in this building. He lives on the ________ floor.
A. thirty; nine B. thirtieth; nine C. thirtieth; ninth D. thirty; ninth
答案:D
句意:这座楼有三十层。他住在第九层。
(2021·湖北黄冈·中考真题)
— Excuse me, where’s the library
— Go along this road, and turn right at ________ crossing. It is on your left.
A. one B. the one C. first D. the first
答案:D
句意:打扰一下,图书馆在哪儿?
沿着这条路走,在第一个十字路口右转。它在你的左边。
03
数词拓展
Extension / k sten n/
(1)表示小数
与汉语一样小数点前的数, 按普通基数词的读法去读, 小数点后的数, 按单个数字一一读出。小数点后的0通常读作o / u/, 有时也读作zero, 小数点读作point。
1.56 读作 one point five six
10.305 读作 ten point three o five
6.4 读作
67.89 读作
0.05 读作
Extension




six point four
sixty-seven point eight nine
zero point zero five
(2)表示分数 (分子用基数词, 分母用序数词)
分子是 1 时, 分母用单数
分子超过 1 时, 分母用复数
1/2 one half 或 a half
1/3 one third 或 a third 2/3 two thirds
1/4 a quarter 或 one quarter 3/4 three quarters 或 three fourths
2/5 two fifths
带分数:先读整数部分, 再读分数部分, 中间加“又”字, 英语用and连接。
five and two thirds
Extension




注:分数 + of + 名词, 谓语动词单复数情况
① 如果 of 后面是不可数名词, 则谓语动词用单数形式(三单)
例:五分之二的信息是有用的。
Two fifths of the information is useful.
② 如果 of 后面是可数名词单数, 则谓语动词用单数形式(三单)
例:三分之二的陆地被水覆盖着。
Two thirds of the land is covered with water.
③ 如果 of 后面是可数名词复数, 则谓语动词用复数形式
例:我班级的三分之一的学生是女生。
One third of the students in my class are girls.
Extension




(3)表示百分数
百分数由基数词 (或小数) 和百分号 (%)组成, 百分号读作 per cent 英式英语, percent 美式英语。
15% 读作 fifteen percent
0.6% 读作 zero point six percent
12.34% 读作 twelve point three four percent
注:百分数 + of + 名词, 谓语动词单复数情况
Sixty percent of the teachers are women.
百分之六十的老师是女性。
Two thirds of the homework is easy.
三分之二的作业是简单的。
Extension




(2021·广西玉林·中考真题)
— Susan, how many women teachers are there in your school
— In our school, _______of the teachers _______ women teachers.
A. third fourth; are B. third fourth; is C. three fourths; is D. three fourths; are
答案:D
句意:苏珊,你们学校有多少女老师?
在我们学校,四分之三的教师是女教师。
(2021·贵州黔东南·中考真题)
About ________ of the students in Kaili ________ to school boy bus.
A. two fifth; go B. two fifths; go C. two fifth; goes D. two fifths; goes
答案:B
句意:凯里大约五分之二的学生坐公共汽车上学。
数词有关的习语
at sixes and sevens 乱七八糟
屋子里现在乱七八糟。
Everything is at sixes and sevens in the house.
be of two minds
① 三心两意。
② 又想这样又想那样, 犹豫不定, 不专心
nine times out of ten 十有八九
have two left hands
kill two birds with one stone
Extension




电报最早是由美国的摩尔斯在1844年发明的, 故也叫摩尔斯电码。由两种基本信号和不同的间隔时间组成:短促的点信号读 (Di), 保持一定时间的长信号读 (Da)。
笨手笨脚
一石二鸟
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