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We need two cups of honey to make a banana milk shake. 我們需要兩杯蜂蜜來做香蕉奶昔。
2、用于“時間點”
The first class begins at 8 o’clock. 第一節(jié)課在8點開始。
I usually have breakfast at half past six. 我通常在6:30起床。
It is a quarter past twelve. The Greens are having lunch. 現(xiàn)在是12點15 。格林一家在吃午飯。

He arrived at the station at a quarter to three. 他2點45分到達(dá)了車站。
根據(jù)發(fā)音寫出時間點：/tu:/ /tu:/ /tu:/ ______________
3、用于“日期”
Tom was born in 2004. 湯姆出生于2004年。
Both of his parents were born on January 8th, 1975. 他父母親都出生于1975年1月8日。
4、用于“編號”
Mr. King lives at No. 8 Xingfu Street. 王老師住在幸福大街8號。
Today we are going to learn Unit 10. 今天我要學(xué)習(xí)10單元。
5、用于“年代”
Mickey Mouse became famous in the 1930s. 米老鼠在20世紀(jì)30年代出名。
He moved to Shanghai in his forties. 他四十多歲的時候搬到了上海。

序數(shù)詞什么樣？

序數(shù)詞由基數(shù)詞變化而來。請牢記口訣：
基變序,有規(guī)律,詞尾要加th 。一二三,特殊記, 詞尾分別t d d(first second third ) 。
八去t ,九去e, ve要用f替。ty變作tie,再加th莫忘記. 若遇幾十幾,只變個位就可以。
1 first
2 second
3 third
4 fourth
5 fifth
6 sixth
7 seventh
8 eighth
9 ninth
10 tenth
11 eleventh
12 twelfth
13 thirteenth
14 fourteenth
15 fifteenth
16 sixteenth
17 seventeenth
18 eighteenth
19 nineteenth
20 twentieth
30 thirtieth
40 fortieth
50 fiftieth
60 sixtieth
70 seventieth
80 eightieth
90 ninetieth
99 ninety-ninth
100 one hundredth
101 one hundred and first
122 one hundred and twenty-second
200 two hundredth
1001 one thousand and first
1028 one thousand and twenty-eighth
1899 one thousand eight hundred and ninety-ninth
2000 two thousandth
2035 two thousand and thirty-fifth
10000 10 thousandth

序數(shù)詞的考點有哪些？
常考序數(shù)詞：first, second, third, fifth, ninth, twelfth + 名詞單數(shù)
1、 the + 序數(shù)詞
It’s the third time I’ve been here. 這是我第三次來這兒。
The second is better than the first. 第二個比第一個好。
【注意】 ① 考試比賽名次可省the：She was (the) third in the exam. 她考試得了第三名。
② 序數(shù)詞前有物主代詞或名詞所有格省掉the： his second wife 他的第二個妻子
Tom’s third book 湯姆的第三本書
③ 序數(shù)詞用作副詞時也通常不用冠詞the：　He came first. 他先來。
I should stand first. 我得先站起來。
④ 有些習(xí)語中的序數(shù)詞前沒有冠詞：at first first of all
2、 a / an + 序數(shù)詞
A second student stood up. 又一個學(xué)生站了起來。
I want to read the book a third time. 這本書我想再讀一次。

試試看

練習(xí)（一）：單項選擇。
1. Lincoln was born on ________.
A. February 12, 1809 B. 1809, February 12
C. 1809, 12 February D. February 1809,12
2. A _______ boy can sing the English song very well.
A. ten-year-old B. ten years old
C. ten-year-old D. fifth years old
3. An hour later, _____ minister was sent to see the “magic cloth” woven by those two men.
A. two B. the second C. the two D. second
4. Abraham Lincoln was _______ President of the United States.