小学英语基数词序数词ppt课件【26页】

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
eight
four one two three
five
seven
six
zero
nine
one
two three four
five
eight
seven
second
third fourth fifth
sixth
seventh
first tenth ninth eighth
second
third fourth
ordinal numbers
fifth
sixth
seventh
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。
11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteen
Let’s review
thirty ten One hundred sixty
forty seventy
eighty
fifty
ninety
twenty
Dragon
• 1-100
Look and Read
1
100
one hundred
2
3
1,000 one thousand
1,000,000 one million 1,000,000,000 one billion
4
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
Can you write their ordinal numbers? 2 9 5 14
100
12 19 8 40 101
72 90 18 44 1000
twelfth month of the year. •December is the ________ second day of the week. •Monday is the _______ first •English is spoken by most people as their _______ language in the USA, Great Britain, Australian, and Canada. •The Games of the twenty-ninth _____________ Olympic in 2008 will be held in the city of Beijing. •I’m hungry. I’ve eaten three apples. Would you fourth one? please give me a_______ twenty-first century the •At the beginning of the _____________ world’s population has passed 6 billion. •He got off this bus and got on a second ______ one.
Practice:
LOGO
hundred
看谁译得快：
one hundred 一百 one thousand 一千 ten thousand 一万 one hundred thousand 十万 one million 一百万 ten million 一千 万 one hundred million 一亿 one billion 十亿 ten billion 一百亿 one hundred billion 一千亿 tens/ hundreds/thousands/ millions of 数十/百/千/百万
twenty---twentieth
forty---fortieth sixty---sixtieth
thirty---thirtieth fifty---fiftieth seventy---seventieth ninety---ninetieth
eighty---eightieth
first tenth ninth eig3
Step1:one hundred and twenty-three billion, Step2:four hundred and fifty-six million, Step3:seven hundred and eighty-nine thousand, Step4:one hundred and three
What is the largest / smallest 4-digit number?
9831
1389
8
1
9
3
Let’s do a practice!
face to face number to number
序数词
•one ---first three---third five---fifth seven---seventh nine---ninth two---second four---fourth six---sixth eight---eighth •ten----tenth
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
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
six
zero
nine
one
eight
numbers
six
two three four
five
seven
Numbers are widely used.
Hello ， 86861873 ---
Let’s sing a song ！
Title
Number song
Let’s count!
• 1-10 • one two three four five • six seven eight nine ten