1 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 1-12 没有规律，需特殊记忆： one two three four five six seven eight nine ten eleven twelve 13-19是基于3-9在后边加-teen thirteen fourteen fifteen sixteen seventeen eighteen nineteen 20：twenty 21-29是20加上1-9的数字 如：thirty 31-39是30加上1-9的数字 依此类推～ 20、30、40等这些都是什么什么加-ty
45和第45的英语是什么？
