來源:網絡資源 2022-10-17 20:16:10
序數詞的用法
(1)序數詞作定語時,一般要與定冠詞或物主代詞連用。
eg.Tom is their second son.
He is the first one to come here.
(2)序數詞有時可與不定冠詞連用,表示數量上“又—”,“再一”
eg: He tried a second time.他又試了—次。
Shall l ask him a third time?還要我再問他—次嗎?我已問了他兩次)
(3)序數詞的縮寫形式為:阿拉伯數字加上這個詞的末尾兩個字母。
1st 2nd,3rd,4th,20th,21st,22nd,23rd
(4)表示年、月、日時,年用基數詞,日用序數詞。
2005年8月15日:(英)15,8,2005=15th,August,2005;(美)8,15,2005=August 15th,2005
III基數詞和序數詞都可以用來給數字編號
The first lesson=Lesson Two(第二課)
第305房間:Room three o(零)five
長安街76號:seventy-six Changan Street
電話號碼:204-2244:telephone number two o(零) four two two(double two four four
十一路公共汽車:Bus(No.) eleven
IV 詞的表達
分子用基數詞,分母用序數詞,分子大于1時,分母加s
eg.1/3-one third;2/5-two fifths
V數學運算的表達
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 /six unutilized five is thirty.
8÷2=4 Eight divided by two is four.
VI倍數表示法
a. 主語+謂語+倍數(或分數)+ as + adj. + as
I have three times as many as you. 我有你三倍那么多。
b. 主語+謂語+倍數(分數)+ the size (amount,length…) of…
The earth is 49 times the size of the moon. 地球是月球的49倍。
c. 主語+謂語+倍數(分數)+ 形容詞(副詞)比較級+ than…
The grain output is 8 percent higher this year than that of last year.
今年比去年糧食產量增加8%。
d. 還可以用by+倍數,表示增加多少倍
The production of grain has been increased by four times this year.
今年糧食產量增加了4倍。
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