小升初英语
数词
The Great Wall of China
• The Great Wall of China is the longest wall
in the world. It is about 6,000 kilometers long,
7 meters high and 5 meters wide. The Great Wall
was built more than twenty centuries ago. It was very
difficult to build such a great wall without any
modern machines.
Thousands of men died while they were
building the wall. Have you ever been to the Great
Wall? It is very famous in the world. Many foreigners
come to visit it every year. They like it very much.
月份 星期
January
February
March
April
May
June
July
August
September
October
November
December
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
数
词
1. 基数词
2. 序数词
3. 数词的应用
基数词
1.1—12的基数词是独立的单词。
one,two,three,four,five,six,seven,eight,
nine,ten, eleven , twelve
2.13—19的基数词以-teen结尾。
fourteen,seventeen等,但13,15,18较特殊,
13— thirteen 15— fifteen 18— eighteen
3.20—90的整十位均以-ty结尾。
sixty,seventy,但20,30,40,50,80,较特殊,
20— twenty 30—thirty 40—forty
50—fifty 80—eighty 90—ninety
4.十位数与个位数之间要加连字符号“-”。
28—twenty-eight,96—ninety-six
5.百位和十位(若无十位则和个位)之间加and,
148—one hundred and forty-eight
406—four hundred and six
6.hundred(百),thousand (千), million (百万),
billion(十亿)等前面即使有具体的数词,也不能在它们
的后面加s。
600—six hundred,8百万—eight million
7.1000以上的数字,从后往前数每三位加一个逗号“,”第一个逗号前为千(thousand),第二个逗号前为百万(million),第三个逗号前为billion(十亿)。
英语中无“万”这个词,我们可以用“几十个千(thousand)”表示几万,“几百个千(thousand)”表示“几十万”。
2,510=two thousand five hundred and ten
84,296=eighty-four thousand two hundred and ninety-
six
274,350=
88,065,909=
8.hundred,thousand,million用复数形式修饰名词时要用
“of+复数名词”。
数以百计的年轻人 hundreds of young people;
数以千计的书 thousands of books
注意:hundreds of /thousands of/millions of +复数词,
其前面不能加具体的数词,但可加several或 many。
9.基数词+单数名词+形容词构成合成形容词。
一个五岁的男孩 a five-year-old boy;
一座七层高的建筑物 a 7-storey-high building.
序数词
1.基数词变序数词可利用口诀巧记:
一、二、三,特殊记,八去“t”,九去“e”,“ve”要用“f”
替,见“y”变成“i”和“e”,词尾加上“th”,若是遇到几十
几,只变个位就可以.
第一、第二、第三分别:
first second third
eight — eighth nine — ninth
five — fifth twelve — twelfth
twenty — twentieth forty — fortieth,
twenty-five — twenty--fifth
2.其余情况均在基数词后加 th。
six—sixth, nineteen—nineteenth ,hundred— hundredth,
thousand—thousandth
数词的应用
1.钟点的表示:小时、点钟、分钟、秒钟要用基数词。
①“几点钟”用基数词加o‘clock。o’clock可省略。
现在是5点钟—It's five(o'clock).
②“几点过几分,≤30分钟”用介词past。
7:05—five past seven;
7:15—fifteen(a quarter)past seven;
7:30—half past seven
③“差几分几点”用介词“to”。
注意:整点加“1”且用 60减去目前的分钟数。
7:40—twenty to eight;
7:45—fifteen(a quarter)to eight
④日常生活中的时间读法常常简化,直接按基数词的顺序
读。
7:05—seven o five;7:15— seven fifteen
2.编号的表示:
① Lesson One =the first lesson 第一课;
② Bus No.3=the No.3bus 3路公共汽车;
③302房间—Room 302(读作:room three o two);
④ Page 457 第457页;
⑤电话号码,用基数词,可单个读,重复的数字也可读
“double”,
3855633—three eight five five(double five) six three
three(double three)。
如果编号的数词比较
长,一般用基数词。
3.年月日的表示:
①年份用基数词,先读前两位,再读后两位。
1999—nine-teen ninety-nine;
1900—nineteen hundred;
2000—two thousand;
1905—nineteen o five
②年用基数词,日用序数词
1998年6月8日写作:June 8,1998;
读作:June the eighth, nineteen ninety-eight
或the eighth of June, nineteen ninety-eight
4.分数的表达:
①分子用基数词,分母用序数词,分子大于“1”,分母 则加“s”。如:
1/3 one third,2/3 two thirds;
②1/2 a(one)half, 1/4 或
a ,3/4 .
5.倍数的表达:
一倍用once,两倍用 ,两倍以上用基数词+
times 。 5倍 。
特殊用法
1.数词作主语,谓语动词用单数。
Two months is quite a long time.
Four and two is six.
What‘s two and three?
2.一个半小时(一年半,一个半月可类推)
one/an hour and a half 。
1.基数词和序数词默写背诵。
2.完成数词练习题。
3.写好错题本。
家长签字