https://stepup.edu.vn/blog/tu-hoc-phat-am-tieng-anh/
https://media.pronunciationstudio.com/2020/04/Pronunciation-Studio-Starter-Pack.pdf
https://www.youtube.com/watch?v=DyYFwoITfXY
https://www.youtube.com/watch?v=AbtmtAFdbWo
https://www.youtube.com/watch?v=KI3mgasrYgE

1. /iː/

• Make your mouth wide, like a smile. Your tongue touches the side of your teeth.
  

2. /ɪ/

• Make your mouth a bit less wide than for /iː/. Your tongue is a bit further back your mouth than for /iː/.
  

3. /uː/

• Make your lips into a tunnel shape. Your tongue is a long way back in your mouth.
  

4. /ʊ/

• Your tongue is not so far back as for /uː/.
  
• /ʊ/is open spelled u, oo or ou:
• full /fʊl/ (adjective)
• sugar /ˈʃʊɡ.ər/ (noun)
• book /bʊk/ (noun)
• foot /fʊt/ (noun)
• would /wʊd/ (modal verb)
• woman /ˈwʊm.ən/ (noun)

5. /ɑː/

• Open your mouth wide.
  

6. /ʌ/

• Open your mouth wide.
  

7. /ɒ/ = /ɔ/

• Round your lips a little. the font of your tongue is low and towards the back of your mouth.
  

8. /ɔː/

• Round your lips more than for /ɒ/.
  

9. /e/ = /ɛ/

• Open your mouth quite wide.
  

10. /æ/

• Open your mouth wide.
  

11. /əː/ = /ɜː/

• Your mouth and your tongue should be very relaxed.
  

12. /ə/ = /ɜ/

13. /ɪə/
14. /eə/
15. /eɪ/
16. /ɑɪ/
17. /ɔɪ/
18. /əʊ/
19. /ɑʊ/
20. /ʊə/

21. /p/
22. /b/
23. /t/
24. /d/
25. /k/
26. /ɡ/
27. /f/
28. /v/
29. /θ/
30. /ð/
31. /s/
32. /z/
33. /ʃ/
34. /ʒ/
35. /tʃ/
36. /dʒ/
37. /m/
38. /n/
39. /ŋ/
40. /h/
41. /l/
42. /r/
43. /w/
44. /j/