Question：我感覺代詞講得差不多了。
Answer：是的。今天我們開始講數(shù)詞：基數(shù)詞和序數(shù)詞（one , first）
基數(shù)詞和序數(shù)詞
Reading:
This happened during the Second World War.
Having sailed for hundreds of days, two men with the name John and Bill were shipwrecked on a deserted island in the middle of the Pacific Ocean.
They had plenty of fish and fruit to eat, but nothing to read except a book full of jokes.
Each of the jokes were numbered.
At first, to help pass the time, John and Bill read the jokes to each other, then they told the story from memory. After a year they knew the jokes so well that they just said the number of the joke.
“Number twenty,” John would say, and Bill would roar with laughter.
Then Bill might say, “The twenty-fifth,” and John would laugh.
One day, after they had been on the island for dozens of years, another man was shipwrecked with them.
They began to tell jokes as usual. Bill said, “Number one hundred and four.” John burst out laughing. The man didn’t laugh. John said, “Number ninety-nine.” Bill began to laugh. The man looked puzzled.
The man said, “ Number two hundred and twenty.” Neither of the other two men laughed.
“Why didn’t you laugh?”
Bill then handed him the joke book, which contained only one hundred and eighty jokes.
數(shù)詞有基數(shù)和序數(shù)詞：
1. 基數(shù)詞用來表示事物的數(shù)量：
Two men with the name John and Bill were shipwrecked on a deserted island in the middle of the Pacific Ocean.
Bill then handed him the joke book, which contained only one hundred and eighty jokes.
2. 基數(shù)詞：
(1-10) one two three four five six seven eight nine ten
(11-19) eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen
(20-90) twenty thirty forty fifty sixty seventy eighty ninety
(21 33...)twenty-one thirty-three...
(100 1,000 1,000,000) a (one) hundred, a (one) thousand, a (one) million,
(1,000,000,000) a (one) billion(美式)， a (one) thousand million(英式)
(1,000,000,000,000) a (one) trillion(美式) ， a (one) billion(英式)
3. 其他基數(shù)詞的讀法：
418 four hundred and eighteen
1,006 one thousand and six
18,999,337 eighteen million nine hundred and ninety-nine thousand three hundred and thirty-seven
讀數(shù)時 hundred, thousand等均用單數(shù)， 百位和十位（如十位為零則在個位）之間加and。
4. 序數(shù)詞用來表示事物的順序：
the Second World War, the twenty-fifth
5. 序數(shù)詞：
(1st-10th) first second third fourth fifth sixth seventh eighth ninth tenth
(11th, 19th ) eleventh, nineteenth
(20th ,90th ) twentieth, ninetieth
(21st 45th 89th )twenty-first forty-fifth eighty-ninth
(100th 1,000th ) hundredth, thousandth,
6. 序數(shù)詞前通常用定冠詞。 用不定冠詞時有其特殊意義：
Let me try it a third time. 表示“再， 又”
7. 談?wù)摼幪枙r，也可以這樣用基數(shù)詞表示順序：
Number twenty.
Number one hundred and four.
Lesson One
Section Twenty-two
小練習(xí)：
讀出下列數(shù)詞：
1）234,666 2） 900,763,201 3）33th 4） 48th
上期答案：
1. but she can't find hers. 2. but she can’t find any in her size.
3. but she’s going to buy some 4. she’s looking for some red ones. 5. but hers are big.
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