1. one [wʌn]

2. two [tuː]

3. three [θriː]

4. four [fɔːr]

5. five [faɪv]

6. six [sɪks]

7. seven [sevn]

8. eight [eɪt]

9. nine [naɪn]

10. ten [ten]

11. eleven [ɪlɪvən]

12. twelve [twelv]

13. thirteen [θɒrθɪn]

14. fourteen [fɔːrθteen]

15. fifteen [fɪfθteen]

16. sixteen [sɪksθteen]

17. seventeen [sevnθteen]

18. eighteen [eɪθnθteen]

19. nineteen [naɪnθteen]

20. twenty [twentɪ]

建议你在学习英语时，可以多次听录音和跟读，以加深记忆。