基数词序数词的讲解与练习

发布 2021-05-14 08:56:28 阅读 4373

f.基数词在表示确切的数字时,不能使用百、千、百万、十亿的复数形式;但是,当基数词表示不确切数字,如成百、成千上万,三三两两时,基数词则以复数形式出现。

there are hundreds of people in the hall.

thousands of people come to visit the museum of qin terra-cotta warriors and horses every day.

每天有成千上万的人来参观秦兵马涌博物馆。

h.基数词的句法功能。

基数词在句中可作主语、宾语、定语、表语、同位语。

the two happily opened the box. (作主语)

i need three altogether.(作宾语)

four students are playing volleyball outside.(作定语)

we are sixteen. (作表语)

they three tried to finish the task before sunset.(作同位语)

2. 序数词。

表示顺序的词称为序数词。序数词的主要形式:

从第一至第十九。

其中,one— first, two— second, three— third, five— fifth,eight—eighth,nine—ninth,twelve— twelfth为特殊形式,其它的序数词都是由其相对应的基数词后面添加“th”构成。例如: six— sixth、nineteen— nineteenth.

从第二十至第九十九。

整数第几十的由其对应的基数词改变结尾字母y为i,再加“eth”构成。

twenty—twentieth thirty—thirtieth

表示第几十几时,用几十的基数词形式加上连字符“-”和个位序数词形式一起表示。

thirty-first 第三十一。

fifty-sixth 第五十六。

seventy-third 第七十三。

ninety-ninth 第九十九。

c.第一百以上的多位序数词。

由基数词的形式变结尾部分为序数词形式来表示。

one hundred and twenty-first 第一百二十一。

one thousand,three hundred and twentieth 第一千三百二十。

d.序数词的缩写形式。

有时,序数词可以用缩写形式来表示。主要缩写形式有。

first——lst second——2nd third——3rd

fourth——4th sixth——6th twentieth——20th

twenty-third——23rd

其中lst,2nd,3rd为特殊形式,其它的都是阿拉伯数字后加上th。

e.序数词的句法功能。

序数词在句中可作主语、宾语、定语和表语。

the second is what i really need. (作主语)

he choose the second.(作宾语)

we are to carry out the first plan. (作定语)

she is the second in our class. (作表语)

注:序数词在使用时,通常前面要加冠词 the;

另外,基数词也可以表示顺序。只需将基数词放在它所修饰的名词之后即可,不需要添加冠词。

the first lesson——lesson one

the fifth page——page 5(five)

the twenty-first room——room 21(twenty-one)

基数词序数词的练习。

)1. please turn to __

a. page 11 b. the 11 st page c. page 11 d. page the 11 th

( )2. there are some __in our classroom.

a. hundred of booksb. the hundreds of books

c. hundreds of booksd. hundred of book

)3. i h**e been to the village

a. a hundred timesb. hundred times

c. hundreds of timesd. hundred of times

)4. there are __students in our school.

a. four—hundred and forty—five b. four hundred and forty—five

c. four hundreds and forty—five d. four hundred and forty five

( )5. may is __of a year

a. the fifth monthsb. the fifth month

c. the five monthsd. the five month

)6. we live in __

a. the twenty-first centuryb. the century twenty-one

c. century twenty-oned. the century twenty-first

( )7. -how many english books are there on the table?

there is only __english book on it.

a. a b. an c. one d. the

)8. mr smith stayed in __last night.

a. room 403 b. the room 403 c. the 403 room d. 403 the room

)9. is sunday the __day of the week?

a. a b. one c. once d. first

)10. march the __is women’s day.

a. eighth b. ninth c. tenth d. eight

)11. september is the __month of the year.

a. nineth b. ninth c. nine d. the twelveth

)12. december the __is christmas.

a. twenty-fiveb. twenty-fifth

c. twentieth-fived. twenty-five

用past或 to的句型。

1. what time is it ? 8:30

it’s2. what time is it ? 9:15

it’s3. what time is it ? 7;45

it’s

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