Contents: Introduction I. Special Phonetic Features in the English Language

Conclusion
In conclusion, we can say that Learning to pronounce new consonant sounds can be challenging, and it won‘t happen all at once. It takes time for students to learn to recognize new sounds and get used to moving their mouths in strange new ways to produce them. Consonants are sounds in which the air stream meets some obstacles in the mouth on its way up from the lungs, as we learned earlier. Most consonants are not as smooth-sounding as vowels; they pop, hiss, snap, or hum.
Most words in English contain at least one consonant, and some contain many more. For example, at and she each contain one consonant sound, play contains two, and spring contains four. But words don‘t have to have any consonants at all. For example, the words I, a, and oh have no consonant sounds—only vowels. A consonant letter usually represents one consonant sound. Some consonant letters, for example, c, g, s, can represent two different consonant sounds.
Consonants are produced by pushing air up from the lungs and out through the mouth and/or nose. Airflow is disrupted by obstructions made by various combinations of vocal articulator movements, so that audible friction is produced. They are described in terms of voicing, place of articulation and manner of articulation. Voicing refers to the presence or absence of vocal vibration during speech sound production. In a voiced sound, there is vocal fold vibration and an audible 'buzzing' sound. In an unvoiced sound, there is no vocal fold vibration.
Although it is well documented that voiceless initial obstruent induce high tones and voiced initial obstruent induce low tones cross-linguistically, consonant-tone interaction is still a controversial issue, both phonetically and phonologically.
The place of articulation is the physical location in the vocal tract that a phoneme is produced in, and the kinds of articulatory movements that are involved in producing a sound. Study consonant and vowel sounds is too important and interesting for me because Phonology is one of few ways to understand every single letter and word to pronounce in the correct form. To have a comparison about consonant and vowels sounds I can tell you that consonants are easier to pronounce and record them in the mind but the vowels you have to concentrate more because the same letter can have different pronunciation.