Vowel № 11 [ə:] In pronouncing the English [ə:] the tongue is neither raised nor lowered. The tongue is flat in the middle of the mouth cavity. The tip of the tongue is retracted from the lower teeth. The lips are neutral. Thus, the English [ə:] may be defined as a long, tense, mixed, half-open vowel phoneme.
The quality of consonants is determined by the following three conditions:
The active organs of speech which form the obstruction (the place of obstruction).
The manner of the production of noise (the way of forming obstruction).
The work of the vocal chords.
According to the active organs of speech consonants are divided into:
bilabial(the obstruction is formed by the two lips brought together):