填入适当的基数词，完成句子。
1. What's ___________ and five?  It's twenty.
2. What's seventy and ___________?  It's one hundred.
3. What's ___________ and eighteen?  It's fifty-nine.
4. What's ___________ and thirteen?  It's sixty-two.
5. What's ___________ and eight?  It's ninety-seven.
2答案
1. fifteen  2. thirty  3. forty-one  4. forty-nine  5. ewww.souquanme.comighty-nine
3考点梳理
基数词
基数词：
即表示数目多少的数词。
A、1-12的基数词表示方法。 
  1 one  2 two  3 three  4 four  5 five  6 six  7 seven  8 eight  9 nine  10 ten  11 eleven 12 twelve 
B、13-19基数词的表示方法，都以teen结尾。 
  13 thirteen  14 fourteen  15 fifteen  16 sixteen  17 seventeen  18 eighteen 19 nineteen 
C、大于20小于100的基数词的表示方法。 
  a. 整数词的表示方法，都以ty结尾。 
     20 teNqougAnwwww.souquanme.comenty  30 thirty  40 forty  50 fifty  60 sixty  70 seventy  80 eighty  90 ninety
  b. 其他的两位数的表示方法：先写比表示从20-90的英文单词，然后是连字符“-”，最后写从1-9的英文单词。
    如：21 twenty-one  55 fifty-five  92 ninety-two 
D、整百的基数词的表示方法，用1-9加hundred表示。表示几百，在几十几与百位间加上and。    
100 a (one) hundred      200 two hundred                        900 nine hundred
101 a hundredand one    320 three hundred and twenty    648 six hundred and forty-eight 
注：hundred 前面有具体数字时，后面不能加“s”；这个词表示大概数字时词尾要加“s”。如：hundreds of (数以百计)。
E、千位数以上 从数字的右端向左端数起，每三位数加一个逗号“，”。从右开始，第一个“，”前的数字后添加 thousand，第二个“，”前面的数字后添加 million，第三个“，”前的数字后添加 billion。然后一节一节分别表示，两个逗号之间最大的数为百位数形式。
2,648  two thousand six hundred and forty-eight
16,250,064 sixteen million two hundred and fifty thousand sixty-four
5,237,166,234 five billion，two hundred and thirty-seven million，one hundred and sixty-six thousand，two hundred and thirty-four
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． 大厅里有数以百计的人。
Thousands and 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俑博物馆。
基数词的复数形式：
有时两个复数形式的基数词连用可写为：
hundreds of thousands of , tens of hundreds of 等等。
They went to the theatre in twos and threes.他们三三两两地来到了剧院。
表示人的不确切岁数或年代，用几十的复数形式表示。
He became a professor in his thirties.他三十多岁时成为了教授。
She died of lung cancer in forties.她四十来岁时死于肺癌。
It was in the 1960s.那是在二十世纪六十年代。
基数词变序数词记忆口诀：
一二三特殊记,八去t九去e,
五和十二变ve，ti代ty,不要忘了e,
若说几十几,只变个位序数词,
最后都加th.
基数表示法：
一、小数表示法
1. 小数用基数词来表示，以小数点为界，小数点左首的数字为一个单位，表示整数，数字合起来读；
小数点右首的数字为一个单位，表示小数，数字分开来读；
小数点读作 point，o读作 zero或o〔ou〕，整数部分为零时，可以省略不读。
0.4 zero point four或point four 零点四
10.23 ten point two three 十点二三
25.67 twenty-five point six seven 二十五点六七
l.03 one point o three 一点零三
2. 当数字值大于1时，小数后面的名词用复数，数字值小于1时，小数后面的名词用单数。
1.03 meters 一点零三米

1 一般现在时
Shanghai lies in the east of China.
Columbus proved that the earth is round.
I leave home for school at 7 every morning.
The earth moves around the sun.
Pride goes before a fall.
2 一般过去时
he was tired after working
he didnnot know anything before i told him
he once lost a book
She often came to help us in those days.
I didn't know you were so busy.
3 一般将来时
Tomorrow will be Sunday.
The rain will stop soon.
Shall we go there at five? ？
Will you please open the door? ？
We're going to meet outside the school gate.
4 一般过去将来时
I didn't know if he would come.
She was sixty-six. In three years，she would be sixty-nine.
She told us that she would not go with us，if it rained.
I didn't know how to do it. What would be their ideas？
I would play with him when was a child.
5 现在进行时
We are waiting for you.
Mr. Green is writing another novel.
She is learning piano under Mr. Smith.
It's getting warmer and warmer.
You are always changing your mind.
6 过去进行时
I was writing yesterday at that time
I was doing homework yesterday.
I was not doing homework y搜趣网esterday.
Was he running last year?
What were they cleaning just now?
7 将来进行时
I'll be doing homework this time tomorrow.
What will you be doing at 6 tomorrow?
He'll be studying at school next year.
I'll be taking a shower at 9 the day after tomorrow.
Will you be busy working on your report this time tomorrow

I have sixty yuan.
have=own=possess.
满意请采纳谢谢！