Vocabulary and speaking.ppt

外研版
高一年级(必修1)
Module 5
英语课件
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Vocabulary and speaking
涝答沙茸砒版痒抄侍始麓垛膳拥抠镜技坎漱至溜镭髓阁汪倔矢蔚咳犯计***Vocabulary and speakingVocabulary and speaking
英语中基数词、序数词、分数、小数和百分数的读法
桶怨牧茂敲循鹤胀糯霸因坚杉员馋彭欢孝等雅栏责众焰蔡事科腕业啥澜尺Vocabulary and speakingVocabulary and speaking
1. 基数词的读法:
A. 先说“几十”, 再说“几”,中间用连字符。如:
23— 89—
B. 先说“几百”, 再加and,再加末两位数(或末位数)。如:
223—
416—
809—
twenty-three
eighty-nine
two hundred and twenty-three
four hundred and sixteen
eight hundred and nine
癣窑西极沮蹿账挞敛促翰吏螟而馅脂蹈苞戊汁翟诅含掌馁隙废擂屈起纹艰Vocabulary and speakingVocabulary and speaking
C. 1000以上的数先从后向前数,每三位数加一“,”(千分位);第一个“,”号前为thousand; 第二个“,”号前为million; 第三个“,”号前为billion。如:
1,001—
4,000—
9,743—
174,301—
750,000,000—
one thousand and one
four thousand
nine thousand, seven hundred and forty-three
a (one) hundred and seventy-four thousand, three hundred and one
seven hundred and fifty million
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2. 序数词的读法
序数词一般以与之相应的基数词加词尾-th构成,如:tenth(第十),但下面这些基数词在变序数词时, 有特别的地方。如:
A. one — two —
three— five—
eight — nine—
twelve—
first
second
third
fifth
eighth
ninth
twelfth
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B. 以-ty结尾的词,要先变-y为-i,再加-eth。如:
twenty— forty—
C. 以one, two, three, five, nine收尾的多位数词,要照第一条方法变。如:
twenty-one—
twenty-two —
thirty-five —
y-nine—
a hundred and fifty-three —
twentieth
fortieth
twenty-first
twenty-second
thirty-fifth
y-ninth
a hundred and fifty-third
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基数词表示分子,序数词表示分母,除了分子是“1”的情况外,序数词要用复数。如:
¼— 2/3—
7/9— 5/12—
—
—
one-fourth
two-thirds
seven-ninths
five-twelfths
two and three-fifths
thirty and seven-eighths
3. 分数词的读法
2
3
5
30
7
8
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一些特殊的表达法
½—
¼—
¾—
a / one half
a / one quarter
three quarters
4. 小数的读法
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—
—
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