1.基數(shù)詞(1000以內(nèi)的基數(shù)詞的讀法)
(1)1-20：one，two，three，four，five，six，seven，eight，nine，ten，eleven，twelve，thirteen，fourteen，fifteen, sixteen，seventeen，eighteen，nineteen，twenty
2.基數(shù)詞變序數(shù)詞的方法：
(1)一般在基數(shù)詞后加th
eg.four→fourth,thirteen→thirteenth
(2)不規(guī)則變化
one→first,two→second,three→third,five→fifth,eight→eighth,nine→ninth,twelve--~twelfth
(3)以y結(jié)尾的十位整數(shù),變y為ie再加th
twenty→twentieth, forty→fortieth,ninety→ninetieth
(4)從二十一后的“幾十幾”直至“幾百幾十幾”或“幾千幾百幾十幾”只將個(gè)位的基數(shù)詞變?yōu)樾驍?shù)詞。
twenty-first,two hundred and forty-fifth
口訣：
基變序，有規(guī)律;詞尾要加th。
一二三，特殊記;詞尾分別tdd。
八去t ，九去e ;ve則以f替。
ty 則變作 ti ; 后面還有一個(gè)e。
要是遇到幾十幾;只將個(gè)位變成序。
3.數(shù)詞的應(yīng)用：
A、時(shí)間：
a. 整點(diǎn)：基數(shù)詞 + o’clock
eg. It’s eight o’clock now.
b. 幾點(diǎn)幾分：
1.直接表達(dá)法：先小時(shí)后分
eg. 3:25 three twenty-five
2.間接表達(dá)法：先分后小時(shí)
1)(<30分鐘)用past ：分鐘past 小時(shí)
eg. 3:25 twenty-five (minutes) past three
2) (>30分鐘)用to：(60-分鐘數(shù)) to (小時(shí)數(shù)+1)
eg. 3:35 twenty-five (minutes) to four
3) 30分鐘 = half 15分鐘 = a quarter
eg. 3:30 three thirty = half past three
3:15 three fifteen = a quarter past three.
3:45 three forty-five = a quarter to four
B、日期表達(dá)法：月日，年(或日月年)
1949年10月1日 :
October1st , nineteen forty-nine
=the first of October, nineteen forty-nine
2000年: the year two thousand
=twenty hundred
2001年: twenty o one
3月1日: March the first = the first of March
C、表編號(hào)：
第207房間：Room 207
第五課： Lesson 5 = the fifth lesson
D、序數(shù)詞與不定冠詞(a; an)連用表“又一;再一”
eg. You’ve done it three times. Why not try a fourth time?
E、分?jǐn)?shù)的表達(dá)：分子(基數(shù))、分母(序數(shù))
eg. one third 三分之一 two thirds 三分之二
注意：
1.分子超過1時(shí)，分母加s
2.含分?jǐn)?shù)的短語作主語由分?jǐn)?shù)后的詞決定謂語
eg.1)One third of the students are girls.
2)One third of the milk is mine.
3.分?jǐn)?shù)的特殊形式
1)one third = a third
2)one fourth = a quarter
three fourths = three quarters
3)one second = a half
F、表約數(shù)：
表不確定的數(shù)字時(shí)，數(shù)詞用復(fù)數(shù)。
若帶名詞，再加of
如：hundreds of(數(shù)百，成百上千的)，thousands of(數(shù)干，成千上萬的)，millions of(數(shù)百萬的)
G、數(shù)學(xué)運(yùn)算的表達(dá)
eg.3+5=8 Three plus/and five is eight.
9-2=7 Nine minus two is seven.
6x5=30 Five times six is thirty
8÷2=4 Eight divided by two is four.
練習(xí)
( )1.If you go out at night, you’ll be able to see ____ starts.
A. thousands of B. thousand of
C. nine thousands of D. thousands
( )2.Monday is ___ day of the week.
A. first B. the first
C. the second D. second
( )3.You’ve done it twice. Why not try ____ time?
A. third B. the third C. a third D. once
( )4.Which is the____ month? It’s September.
A. nine B. nineth C. ninth D. ninety
( )5.December is ___ of the year.
A. the twelfth months B. the twelfth month
C. the twelveth months D. twelve months
( )6.There are ___ floors in the building and he lives on the ____ floor.
A. eighteen, fifteen B. eighteenth, fifteenth
C. eighteen, fiveteen D. eighteen, fifteenth
( )7.I was born ___, 1982.
A. on June 2rd B. in June 2nd
C. on June two D. on June 2
( )8.It’s ____ from our home to the zoo.
A. two and a half hours’ walk
B. a half and two hours walk
C. two hours and a half hour’s walk
D. two and a half hour’s walk
( )9.What time is it now? It’s ___ to six.
A. quarter B. a quarter C. quarto C. a quarto
( )10.Will you be back in ____ ?
A. one or two minutes B. one minute or two
C. two minutes or one D. two or one minute
( )11.Mary’s uncle went to France ____.
A. in his thirties B. on his thirties
C. at his thirties D. about his thirties
( )12.The headmaster wrote a ___ report.
A. two thousand words B.two-thousand-words
C. two-thousand words D. two-thousand-word
( )13.____of the apples in the fruit bowl are soft and sweet.
A. Two-third B. Second-third
C. Two-thirds D. Second-thirds
( )14.We have learned about ____ these days.
A. several hundreds English words
B. hundreds of English words
C. hundred of English words
D. several hundred English word
( )15.A UN report says that the word population will pass six billion by the end of ____ century.
A. twentieth B. twenty
C. the twentieth D. the twentyth
A. Either B. Every C. Neither
( )8.Would you like ___ cup of tea?
A. other B. the other C. another
( )9.The two friends were so pleased to see each other that they forgot _____.
A. other everything B. anything else
C. everything else.
( )10.____ of his parents is a teacher.
A. Both B. Neither C. None
( )11.The river is very dirty. ____ people go to swim in it.
A. Few B. A few C. Little
( )12.A friend of ____ came to see ____ yesterday.
A. his ; his B. he ; him C. his ; him
( )13.You can’t leave your baby by ___ at home.
A. herself B. himself C. itself
( )14. My father is very busy with his work. He has ___ time to have a rest.
A. little B. a little C. few
( )15.I have three skirts. One is red. ___ two are black.
A. another B. the other C. the others
( )16.Jack has ___ friends here. So he often feels lonely.
A. a little B. a few C. few
( )17.Who teaches ___ French?
A. we B. our C. us
( )18.The boys were all tired, but ___ of them stopped to have a rest.
A. any B. some C. none
( )19.Sorry, I can’t answer your question. I know ____ about the news.
A. a little B. little C. few
( )20.—Hello, Bill! Help ____ to a cake .
—Thanks .
A. your B. yourself C. yourselves
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