來源:網(wǎng)絡(luò)來源 作者:中考網(wǎng)編輯 2020-08-23 18:16:39
About 61 percent of the surface is covered by water. 大約61%的表面被水覆蓋著。
(12)小數(shù)的讀法:小數(shù)點(diǎn)讀作"point",小數(shù)后各位數(shù)要分別讀, 小數(shù)點(diǎn)前的數(shù)若為"0"可略去不讀。
Examples: 2.468 讀作:two point four six eight
0.157 讀作:(zero)point one five seven
II 序數(shù)詞
1.序數(shù)詞的構(gòu)成
。1)一般在基數(shù)詞后加th
eg.four→fourth,thirteen→thirteenth
(2)不規(guī)則變化
one→first, two→second, three→third, five→fifth,eight→eighth,
nine→ninth,twelve——twelfth
。3)以y結(jié)尾的十位整數(shù),變y為ie再加th
twenty→twentieth, forty→fortieth, ninety→ninetieth
。4)從二十一后的“幾十幾”直至“幾百幾十幾”或“幾千幾百幾十幾”只將個位的基數(shù)詞變?yōu)樾驍?shù)詞。
twenty-first,two hundred and forty-fifth
2.序數(shù)詞的用法
。1)序數(shù)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(shù)詞有時可與不定冠詞連用,表示數(shù)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(shù)詞的縮寫形式為:阿拉伯?dāng)?shù)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(shù)詞,日用序數(shù)詞。
2005年8月15日:(英)15,8,2005=15th,August,2005;(美)8,15,2005=August 15th,2005
III基數(shù)詞和序數(shù)詞都可以用來給數(shù)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分?jǐn)?shù)詞的表達(dá)
分子用基數(shù)詞,分母用序數(shù)詞,分子大于1時,分母加s
eg.1/3-one third;2/5-two fifths
V數(shù)學(xué)運(yùn)算的表達(dá)
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(shù)表示法
a. 主語+謂語+倍數(shù)(或分?jǐn)?shù))+ 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(shù)(分?jǐn)?shù))+ 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(shù)(分?jǐn)?shù))+ 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(chǎn)量增加8%。
d. 還可以用by+倍數(shù),表示增加多少倍
The production of grain has been increased by four times this year.
今年糧食產(chǎn)量增加了4倍。
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