Unit 2 Numbers-Grammar课件(共19张PPT)

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名称 Unit 2 Numbers-Grammar课件(共19张PPT)
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科目 英语
更新时间 2022-07-23 16:32:54

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(共19张PPT)
英语教学课件系列
八年级上册
Grammar
教学内容:P23-25
Unit 2 Numbers
对于个位数不为零的十位数,由十位数加个位数构成,中间用连字符号。
eg: 82 —— eighty –two
基数词
表示数量的多少,常用来谈论数目、时间等。
2) 百位数中若十位数不为零,百
位数与十位数之间用
and连接,也可省略and;
但百位数后直接加个位数
and不能省略。
eg: 106 — one hundred and six
122 — one hundred (and) twenty-two
3)千位数,先从右往左数,每三位数加一个“,”,第一个“,”前为thousand(千),第二个“,”前为million(百万),第三个“,”前为billion(十亿),然后一节一节地表示。
fifty five
eighteen
thirty six
seventy four
ninety two
twenty three
one hundred and thirty seven
six thousand nine hundred and eighty five
four hundred and fifty
five hundred and eighty six thousand three
one million six hundred and fifty eight thousand
hundred and ninety seven
seven hundred and thirty nine
C
B
Thousands
of
1. 表示“……十”的数词的复数形式可用来表示人的岁
数或年代。
eg:He is in his early thirties. 他三十出头。
This took place in 1930s. 这发生在二十世纪三十年代。
2. 基数词转化为名词,可用复数形式。
eg:How many twos are there in ten
10里面有几个2?
基数词的特殊用法
B.序数词
序数词 表示顺序,在句中常做定语。
Presentation/Practice
基数词变序数词口诀
基变序,有规律
第一first, 第二second,
第三 third 要牢记
其它后面th加上去;
八去t,九去e,f来把ve替;
若是遇到几十几 ,只变个位就可以;
最后the加序数词前
1. 序数词用作定语, 前面要加定冠词。
eg: The first truck is carrying baskets.
2. 序数词前面可加不定冠词来表示 “再一”,“又一”这样
的意思。
eg:We’ll have to do it a second time.
我们不得不再做一次。
3. 表示年、月、日时, 年用基数词表示, 日用序数词表示。
eg: 1949年10月1日读作:
October (the) first, nineteen forty nine
4. 编码时,既可用基数词也可用序数词。
eg:World War I = the First World War 第一次世界大战
Page One = the first page 第一页
分数的表达:分子用基数词,分母用序数词;当分子
大于1时,分母的序数词用复数形式。
eg:two thirds——2/3
序数词的用法
first
2
third
fourth
twelfth
19
twenty-third
twenty-eighth
The students are standing in a line. They each have a number (from 1 to 28). Fill in the blanks.
中考真题实战篇
It's easy if you try.
一、选择题
1.(2019.四川)_________of them felt tired but quite happy
after ________sports meeting.
A.Every one; the two-day B.None; a two-day
C.Everyone;two days
2.(2019.黑龙江)The apartment has ________floors and Mr.Green lives on the _______floor.
A.twelfth; twelfth B.twelve;twelfth C.twelfth;twelve
3.(2019.贵州)There are ______floors in the building .we live on ______floor.
A. the ninth; the ninth B.the ninth;nine
C. nine; the ninth D.nine;nine
4.(2019.黑龙江)We are preparing programs to celebrate our country's ______ birthday.
A.seventy B.seventieth C.seventeenth
5.(2019贵州贵阳)There are 24 solar terms in a year.Grain Rain often starts in April,the ______month of the year.
A.third B.fourth C.fifth
6.(2020广东广州) Please turn to page _______and look at the _____picture.
A.forty; two B.forty;second
C.fortieth;two D.fortieth,second
7.(2018.重庆) __________ visitors came to take photo of Hongyadong during the vacation.
A.Thousand B.Thousand of
C. Thousands D.Thousands of
8.(2017.青岛)My father gave me a bike on my ________birthday.
A.ten B. a tenth
C.the tenth D.tenth