0-20的英文书写 ： Zero 0 One 1 Two 2 Three 3 Four 4 Five 5 Six 6 Seven 7 Eight 8 Nine 9 Ten 10 Eleven 11 Twelve 12 Thirteen 13 Fourteen 14 Fifteen 15 Sixteen 16 Seventeen 17 Eighteen 18 Nineteen19 Twenty 20 。
0-20的英文书写 ： Zero 0 One 1 Two 2 Three 3 Four 4 Five 5 Six 6 Seven 7 Eight 8 Nine 9 Ten 10 Eleven 11 Twelve 12 Thirteen 13 Fourteen 14 Fifteen 15 Sixteen 16 Seventeen 17 Eighteen 18 Nineteen19 Twenty 20 。