2023届高三英语二轮复习:数字和数词课件-（13张ppt)

(共13张PPT)
Number
Numeral
Fraction(分数)
Cardinal number(基数词)
Ordinal number（序数词）
Percentage(百分数)
Date(日期)
Time（时间）
1.Cardinal number(基数词)：
1-19
one、two、three、four、five、six、seven、eight、nine、ten、eleven、twelve、thirteen、fourteen、fifteen、sixteen、seventeen、eighteen、nineteen
2. 20-90
20_______
30_______
60_______
40_______
50_______
80_______
70_______
90_______
twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety
3. 表达几十几时，在几十和个位基数词之间添加连字符“—”
21__________
43__________
twenty-one
forty-three
4.百以上数字
百____________
百万_________
十亿_________
千___________
hundred
billion
million
thousand
1)基数词在表示确切的数字时, 使用百、千、百万、十亿的单数形式
500__________
6,000,000,000________
five hundred
six billion
356_____________________
three hundred and fifty-six
2)基数词在表示不确切的数字时, 使用百、千、百万、十亿的复数形式
改错：There are thousand of students in our school.
thousands
3)数词+其他名词构成的名词性短语作定语时
其中的名词用单数形式，名词性短语中用连字符“-”来连接。
1） She is five _____ old.
She is a ___________ girl.
改错: It is a 5-meters-wide road.
five-year-old
meter
years
4)表示人的不确切岁数或年代, 用几十的复数形式
He became a professor in his _______(thirty).
thirties
It was in the 1960s.　
2. Ordinal number(序数词)：
one__________ two___________ three__________ five_________ eight __________ nine____________ twelve___________
1-19
first
fifth
eighth
ninth
third
second
twelfth
其它的序数词都是由其相对应的基数词后面添加“th”构成
four_________ fifteen___________
fourth
fifteenth
2. 20-90
twenty________
thirty______
forty______
fifty________
sixty______
seventy_______
eighty______
ninety________
twentieth
thirtieth
fiftieth
sixtieth
seventieth
eightieth
ninetieth
fortieth
3.表第几十几时, 用几十的基数词加上连字符“-”和个位序数词
第三十一_______________ 第五十六_________________
thirty-first
fifty-sixth
4.序数词的缩写形式：
lst, 2nd, 3rd为特殊形式, 其它的都是阿拉伯数字后加上th
5.序数词的考点：
表年级
改错: The little girl is in the five grade.
2）表世纪
改错: This tool was invented in the twenty century.
3）the + 序数词+(n) + to do sth
改错: He is always first one come to the classroom.
fifth
twentieth
to
the
3. Fraction(分数)：
一般表达
3/5_________
1/7___________
three fifths
one seventh
2. 特殊表达
1/2_________
1/4_________
3/4_________
a(one) half
a(one) fourth/a quarter
three fourths/quarters
3. 主谓一致
1) Only one-fifth of air _________(consist)of oxygen.
consists
2) About two thirds of the students _____ (be)going to attend the meeting.
are
4. Percentage(百分数)：
一般表达
12%_____________
twelve percent
90%_____________
ninety percent
2. 主谓一致
1)More than 70 percent of the earth's surface ___(be)covered by water.
is
2) 60 percent of the students in our class is girls.
are
5. Date ：
1.表达形式（缩写）
January—Jan. February—Feb. March—Mar. April—Apr. May— May. June— June.
July— July. August—Aug. September—Sept. October—Oct. November—Nov. December—Dec.
2.表达日期用序数词/在具体的哪一天要加介词on
National Day is ______ ________.
on
2）表达时刻加介词at
We usually get up ____ six o’clock.
1）表达时间范围大/泛指要加介词in
The girl was born _____1998.
in
The boy’s temperature came down ___ the morning.
in
at
Oct. 1st
6. Time ：
一般表达
6:10____________ 2:40_______________
six ten
two forty
2. 特殊表达
1) (half)past
2) to
3) quarter
一、数词在语法填空题中：
It is not rare in _______1990s that people in _________ fifties are going to university for further education.
2. Two___________(five) of the land in that district ______ (be) covered with trees and grass.
4. It is reported that the United States uses ________(two) as much energy as the whole of Europe.
5. The hero of the story is an artist in his ______（thirty）.
the
their
fifths
is
twice
thirties
二、数词在改错题中：
I sold a hundred of tickets by myself.
(2) I have two hundreds dollars.
(3) The sun is some ninety-three millions miles away from the earth.
(4) He looked quite healthy though he was in his seventy.
(5) As a result, people in the modern world generally live much more longer than people in the past.
hundred
million
seventies