事业单位考试公共基础知识点归纳(二):基数词
第3单元数词
(一)基数词
1、1~100的构成
2、3位数构成,例如234 读作:two hundred and thirty-four
3、hundred, thousand, million表示确切数目不加
如:three hundred people,但表示不准确数字时要加s,如thousands of stars
4、千位以上的数,从个位向左数初中英语冠词教案模板,每三位加一个“,”,第一个逗号前为thousand,第二个逗号前为million,第三个逗号前为billion,如7,543,812,应为seven million, five hundred and forty-three thousand, eight hundred and twelve.注意在百位数跟十位数之间应用and连接。(二)序数词
1、序数词构成注意first, second, third, fifth, ninth, twentieth, twenty-first, etc.的特殊方式。
2、序数词用于句中初中英语冠词教案模板,它之前需加the,但有时用不定冠词a(an)表示“再一,又一”如
When I sit down, a third man came in.
(三)分数
基数词代表分子,序数词代表分母。分子小于1时,分子的序数词用单数,分母序数词用复数。
6,5/9 six and five ninths
(四)时刻表达法
2∶25,two twenty-five or twenty-3∶40,
(五)日期表达法
2002年5月20日
注意:带有冠词的副词作谓语时,一般用单数形式
aseven-year-- a five-pound note
(六)倍数表示法
A. 主语+谓语+倍数(或分数)+ as + adj. + as。
『例』I have three times as many as you.
我有你三倍那么多。
B. 主语+谓语+倍数(分数)+ the size (amount,length…)of…。
『例』The earth is 49 times the size of the moon.
地球是太空的49倍。
C. 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…。
『例』The grain output is 8 percent higher this year than that of last year.
今年比往年粮食数量下降8%。
D. 还可以用by+倍数,表示降低多少倍。
『例』The production of grain has been increased by four times this year.
今年粮食数量下降了4倍。
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20个简单的英文词组 - …… 有定冠词、不定冠词和零冠词三种.定代词the置于动词前表示准确的特定的或对话双方都清楚的人和物,或是即将看到的人或物;不定冠词a/an指示这些通常的事物或一类事物,用于单数代词后面;零冠词用于星期、月份等之前.英语冠词....
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