内容正文:
语法分层突破 八年级
28 Danger past, God forgotten. 飞鸟尽,良弓藏。
4 数 词
表示数量和顺序的词叫作数词。数词分为基数词和序数词两种,可以作主语、宾语、定语、
表语等。它的应用很广泛,如表示世纪、年代、时刻、分数等。
语 法 知 识 精 讲
一、基数词
( 一 ) 构成
1 one 10 ten 19 nineteen 50 fi fty
2 two 11 eleven 20 twenty 60 sixty
3 three 12 twelve 21 twenty-one 70 seventy
4 four 13 thirteen 22 twenty-two 80 eighty
5 fi ve 14 fourteen 23 twenty-three 90 ninety
6 six 15 fi fteen 24 twenty-four 100 hundred
7 seven 16 sixteen 25 twenty-fi ve 104 one hundred and four
8 eight 17 seventeen 30 thirty 10, 000 ten thousand
9 nine 18 eighteen 40 forty
3, 333, 333,
333
three billion, three hundred
and thirty-three million,
three hundred and thirty-
three thousand, three
hundred and thirty-three
(二)用法
1. 基数词可在句中作主语、表语、宾语、定语和同位语。如:
The two happily went out. 两个人快乐地出去了。(作主语)
I’m sixteen. 我十六岁。 (作表语)
I need three together. 我总共需要三个。(作宾语)
Four students are playing volleyball. 四个学生正在打排球。(作定语)
They fi ve tried to fi nish the job together. 他们五个一起努力完成工作。(作同位语)
2. 当 hundred, thousand, million 前有具体数字时,要用单数形式;但如果后接 of,要
用复数形式,同时,前面不能再加具体数字。如:
two thousand 两千,thousands of 成千上万的
第一部分 语法知识分层突破
29Cats hide their claws. 知人知面不知心。
3. 在下列情形中,经常使用基数词:
(1)班级、年级、房间号、车号、地址号。如:
Room 126 126 房间;Bus 39 39 路公共汽车;Xinhua Road 6 新华路 6 号
(2)表示人的不确切的岁数,用几十的复数形式。如:
He became a teacher in his thirties. 在三十多岁时,他成了一名教师。
二、序数词
(一)构成
1 fi rst 8 eighth 15 fi fteenth 40 fortieth
2 second 9 ninth 16 sixteenth 50 fi ftieth
3 third 10 tenth 17 seventeenth 60 sixtieth
4 fourth 11 eleventh 18 eighteenth 70 seventieth
5 fi fth 12 twelfth 19 nineteenth 80 eightieth
6 sixth 13 thirteenth 20 twentieth 90 ninetieth
7 seventh 14 fourteenth 30 thirtieth 100 hundredth
1. 序数词构成的记忆口诀
一,二,三特殊记 (fi rst, second, third)
八去 t,九去 e (eight—eighth, nine—ninth)
ve 要用 f 替 (fi ve—fi fth, twelve—twelfth)
见 y 变为 i 和 e ( twenty— twentieth, ninety—ninetieth)
若是遇到几十几,只变个位就可以 (twenty-fi ve—twenty-fi fth)
2. 序数词的缩写:1st, 2nd, 3rd, 4th, 21st, 22nd, 34th...
3. 100 及以上序数词的表达法:100th, 101st...
(二)用法
1. 序数词在句中可作主语、宾语、定语和表语。如:
The third is what I really