1one 2two 3three 4four 5five 6six 7seven 8eight 9nine 10ten 11eleven 12twelve 13thirteen 14fourteen 15fifteen 16sixteen 17seventeen 18eighteen 19nineteen 20twenty
扩展资料21写：1-20的序数词
first(第一) second (第二) third(第三) fourth(第四) fifth(第五)sixth(第六) seventh(第七) eighth(第八) ninth(第九) tenth(第十)
eleventh(第十一) twelevth(第十二) thirteenth(第十三）fourteenth(第四)fifteenth(五)sixteenth(第十六)seventeenth(第十七)eighteenth(第十八) ninteenth(第十九) twentith(第二十)
这里除 eleven， twelve， thirteen， twenty，fifteen， eighteen为特殊形式bai外，fourteen，sixteen，seventeen，nineteen都是由其个位数形式后添加后缀-teen构成。
从 21——99整数几十中除twenty，thirty, forty，fifty，eighty为特殊形式外，sixty，seventy，ninety都是其个位数形式后添加后缀-ty构成。表示几十几时，在几十和个位基数词形式之间添加连字符“-”：21 twenty-one 76 seventy-six。
我们学习英语，能学会所有的因素和发音规则，也有可能掌握所有的语法和规则，但要学会所有的单词是无法做到的。且不说外语学习者。即便把英语作为母语使用的人也难以达到这一目标。
1-10 one two three four five six seven eight nine ten
11-20 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty
21-29 twenty-one twenty-two twenty-three twenty-four….
30-39 thirty thirty-one thirty-two ….
40-49 forty forty-one forty-two forty-three….
50-59 fifty fifty-one fifty-two fifty-three…..
60-69 sixty sixty-one sixty-two sixty-three…..
70-79 seventy seventy-one seventy-two …..
80-89 eighty eighty-one eighty-two eighty-three….
90-99 ninety ninety-one ninety-two ninety-three…
one hundred
one
2 two
3 three
4 four
5 five
6 six
7 seven
8 eight
9 nine
10 ten
11 eleven
12 twelve
13 thirteen
14 fourteen
15 fifteen
16 sixteen
17 seventeen
18 eighteen
19 nineteen
20 twenty
21 twenty-one
22 twenty-two
23 twenty-three
24 twenty-four
25 twenty-five
26 twenty-six
27 twenty-seven
28 twenty-eight
29 twenty-nine
30 thirty
31 thirty-one
32 thirty-two
33 thirty-three
34 thirty-four
35 thirty-five
36 thirty-six
37 thirty-seven
38 thirty-eight
39 thirty-nine
40 forty
41 forty-one
42 forty-two
43 forty-three
44 forty-four
45 forty-five
46 forty-six
47 forty-seven
48 forty-eight
49 forty-nine
50 fifty
51 fifty-one
52 fifty-two
53 fifty-three
54 fifty-four
55 fifty-five
56 fifty-six
57 fifty-seven
58 fifty-eight
59 fifty-nine
60 sixty
61 sixty-one
62 sixty-two
63 sixty-three
64 sixty-four
65 sixty-five
66 sixty-six
67 sixty-seven
68 sixty-eight
69 sixty-nine
70 seventy
71 seventy-one
72 seventy-two
73 seventy-three
74 seventy-four
75 seventy-five
76 seventy-six
77 seventy-seven
78 seventy-eight
79 seventy-nine
80 eighty
81 eighty-one
82 eighty-two
83 eighty-three
84 eighty-four
85 eighty-five
86 eighty-six
87 eighty-seven
88 eighty-eight
89 eighty-nine
90 ninety
91 ninety-one
92 ninety-two
93 ninety-three
94 ninety-four
95 ninety-five
96 ninety-six
97 ninety-seven
98 ninety-eight
99 ninety-nine
100 one hundred
200 two hundred