1. Fricatives
Pan Dechnarong

2. Fricatives in English /f/ /v/ /θ/ /ð/ /s/ /z/ /ʃ/ /ʒ/ /h/ Bilabial
Labio
dental
Dental
Alveolar
Palatal
Velar
Glottal
Fricative
/f/
/v/
/θ/ 
 /ð/
/s/
/z/
/ʃ/ 
/ʒ/
/h/

3. Problems Fricatives  Stops /f/ and /v/  /p/ and /b/ /v/  /w/
Suffer: /sʌfər/  Supper: /sʌpər/
Vote: /voʊt/  Boat: /boʊt/
/v/  /w/
/vɒlibɔl/  /wɒlibɔl/

4. Problems /θ/ and /ð/  /t/ and /d/ /θ/ and /ð/  /s/ and /z/
Think: /θɪŋk/  /tɪŋk/
This: /ðɪs/  /dɪs/
/θ/ and  /ð/  /s/ and /z/
Month: /mʌnθ/  /mʌns/
Mouth: /maʊð/  /maʊz/
/θ/ and  /ð/  /f/ and /v/
With: /wɪθ/, /wɪð/  /wɪf/, /wɪv/

5. What are you thinking about?

6. Tips
Minimal Pairs
Place tongue between the teeth
Air blowing– hands

7. Tips Practicing Ordinal numbers A: When is your birthday?
Third, forth, fifth
A: When is your birthday?
B: July fourteenth.
A: What street are you on?
B: Northwest fifth street

8. Tips
Tongue Twisters
Those three thugs think that they threw those things there (p. 105)
She sells sea shells on the sea shore she sells sea shells no more 
Vincent vowed vengeance very vehemently.
Avery, P. & Ehrlich, S. (1992). Teaching American English Pronunciation. Oxford University Press

9. More tips Connected Speech (word finally) Don’t giVE Up your seat
Always  alway
Pass  pa
Don’t giVE Up your seat
Don’t play wiTH It

10. Online Sources

11. ank you