小学英语基数词序数词ppt课件26页.pptx

一千亿
one hundred billion
数十/百/千/百万tens/ hundreds/thousands/ millions of
123 ,456 , 789 , 103
Step1:one hundred and twenty-three billion,
Step2:four hundred and fifty-six million, Step3:seven hundred and eighty-nine thousand,
hundred
看谁译得快：
一百
one hundred
一千
one thousand
一万
ten thousand
十万
one hundred thousand
一百万
one million
一千 万
ten million
一亿
one hundred million
十亿
one billion
一百亿
ten billion
Step4:one hundred and three
Look and Practice
625 six hundred and twenty-five
8,961 eight thousand, nine hundred
and sixty-one 95,680
ninety-five thousand, six hundred and eighty
thirty---thirtieth fifty---fiftieth seventy---seventieth ninety---ninetieth
second
first
third
tenth
fourth
ninth eighth
fifth
sixth seventh
second
first
third
What is the largest / smallest 4-digit number?
9831
1389
8 193
Let’s do a practice!
face to face number to number
序数词
•one ---first three---third five---fifth seven---seventh
language in the USA, Great Britain, Australian,
and Canada. •The Games of the t_w__e_n_t_y_-_n_i_n_t_h_ Olympic in 2008
five
zero one two
nine
thresix five
Numbers are widely used.
Hello ， 86861873 ---
Let’s sing a song ！
Title
Number song
Let’s count!
Look and Practice
6,302,876 six million, three hundred and two thousand, eighty hundred and seventy-six
45,690,510,810 forty-five billion ,six hundred and ninety million, five hundred and ten thousand ,eight hundred and ten
• 1-10 • one two three four five • six seven eight nine ten
11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteen
Let’s review
数词
LOGO
什么是数词？
• 表示数目多少或顺序多少的词叫数词， 数词分为基数词和序数词。表示数目 多少的数词叫基数词；表示顺序的数 词叫序数词。
基数词
one two
five
three
eight four
seven six
zero one nine eight
seven six
two three four
tenth ninth
ordinal numbers
eighth seventh
fourth fifth sixth
❖ ordinal numbers(序数词 )
一、二、三，特殊记， 加th从4起， 八少“t”，九去“e”， “ve”要用“f”替，(five, twelve) 见“y”变成“i”和“e”，词尾加上 “th”， (twenty,thirty,---ninety) 若是遇到几十几，只变个位就可 以。
Can you write their ordinal numbers?
2
12
72
9
19
90
5
8
18
14
40
44
100
101 1000
Practice:
•December is the _t_w_e_l_f_t_h_ month of the year. •Monday is the _s_e__c_o_n_dday of the week. •English is spoken by most people as their _f_i_r_st___
ten sixty
thirty
forty
seventy
One hundred
eighty
fifty
ninety
twenty
Dragon
• 1-100
Look and Read
100
1
one hundred
1,000
2
one thousand
3 1,000,000 one million
1,000,000,000
nine---ninth
two---second four---fourth six---sixth eight---eighth •ten----tenth
twenty---twentieth forty---fortieth sixty---sixtieth eighty---eightieth
4
one billion
Can you read them ?
billion million thousand
100 2,000 30,000 400,000 5,000,000 60,000,000 700,000,000 8,000,000,000 90,000,000,000 100,000,000,000