10 ten
20 twenty
30 thirty
6.从数字25到45的英语单词怎么写25twenty five
26twenty six
27twenty seven
28twenty eight
29twenty nine
30thirty
31thirty one
32thirty two
33thirty three
34thirty four
35thirty five
36thirty six
37thirty seven
38thirty eight
39thirty nine
40forty
41forty one
42forty two
43forty three
44forty four
45forty five
7.第21至第25的英文怎么写两位数中间加上小横线
基数词twenty-one;twenty-two;twenty-three;twenty-four
twenty-five;twenty-six;twenty-seven;twenty-eight
twenty-nine
序数词twenty-first;twenty-second;twenty-third;twenty-fourth（不要少了u）
twenty-fifth;twenty-sixth;twenty-seventh;twenty-eighth
twenty-ninth（去e）
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