1 one[wʌn]
2 two[tu:]
3 three[θri:]
4 four[fɔ:]
5 five[faiv]
6 six[siks]
7 seven['sevən]
8 eight[eit]
9 nine[nain]
10 ten[ten]
11 eleven[ɪˈlevn]
12 twelve[twelv]
13 thirteen[ˌθɜːˈtiːn]
14 fourteen[ˌfɔːˈtiːn]
15 fifteen[ˌfɪfˈtiːn]
16 sixteen[ˌsɪksˈtiːn]
17 seventeen[ˌsevnˈtiːn]
18 eighteen[ˌeɪˈtiːn]
19 nineteen[ˌnaɪnˈtiːn]
20 twenty[ˈtwenti]。
