The vowel [ɪ] is opener than [i] (or equivalently, the vowel [i] is closer than [ɪ]). This means that the tongue is supposed to get closer to the top of the mouth when pronouncing [i].
As indicated by the /:/ part of its symbol, /i:/ is a longer sound than /ɪ/ and pronouncing it this way can help distinguish between the two in the pairs of words below. You will also notice, however, that /ɪ/ does not have a dot over it, making it a different mouth position from /i:/.
The /ɪ/ sound is a Vowel sound and it's technical name is the 'Near-Close Near-Front Unrounded Vowel'. Remember that the key to pronunciation s physical and the name tells us about how the sound is made physically. In this case your tongue is close to the top and the front of your mouth.
IPA. In the International Phonetic Alphabet the sign ː (not a colon, but two triangles facing each other in an hourglass shape; Unicode U+02D0 ) is used for both vowel and consonant length. This may be doubled for an extra-long sound, or the top half (ˑ) may be used to indicate that a sound is "half long".
The /ɪ/ vowel is a high-front sound. Your tongue should be positioned high in your mouth, and shifted toward the front. Your lips should be relaxed, and only slightly open.
How to Produce /ɒ/? To produce it, drop the jaw just a little and round the lips, unlike the unrounded /ɑ/ sound. Push your lips together and make a short, voiced sound. As you can see in the picture, the mouth is slightly more open than the /æ/ sound and less rounded than when producing the /ɔ/ sound.
The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɨ⟩, namely the lower-case letter i with a horizontal bar. Both the symbol and the sound are commonly referred to as barred i. Occasionally, this vowel is transcribed ⟨ï⟩ (centralized ⟨i⟩) or ⟨ɯ̈⟩ (centralized ⟨ɯ⟩).
The sounds /tʃ/ and /ʃ/ are both voiceless, alveo-palatal consonants. However, /tʃ/ is an affricate while /ʃ/ is a fricative. When you pronounce /tʃ/, the air in your mouth should stop (like a /t/) before it is released (like a /ʃ/).
Long vowel is the term used to refer to vowel sounds whose pronunciation is the same as its letter name. The five vowels of the English spelling system ('a', 'e,' 'i,' 'o,' and 'u') each have a corresponding long vowel sound /eɪ/, /i/, /ɑɪ/, /oʊ/, /yu/.
Phonetic symbol
In the International Phonetic Alphabet, a special triangular colon-like letter is used to indicate that the preceding consonant or vowel is long. Its form is that of two triangles pointing toward each other rather than the two dots of Americanist notation.
These two are pronounced with exactly the same mouth position but /dʒ/ uses the voice, whereas /tʃ/ is just a sudden puff of air similar to a sneeze.
This vowel is a mid-front vowel. Position your tongue at mid-height in your mouth, and shift it toward the front. The muscles of your lips and mouth should be relaxed. Vibrate your vocal cords with your mouth in this position.
/eə/ sound
This diphthong sounds like the word 'air'. Letters used to show this sound are: 'air' as in 'hair' /heə/, 'ear' as in 'bear' /beə/, 'are' as in 'care' /keə/, and 'aire' as in 'Claire' /kleə/. To make this sound, first say /e/, then move your tongue backwards and close your mouth a bit to say /ə/.
Difference Between i and i:
/i:/ is a longer sound like EE - try saying 'seem': did you notice the front tip of the tongue rising higher towards the tooth ridge? /ɪ/ is a short sound - try saying 'sim', the front tip of the tongue lowers a little bit.
These are both high, front vowels. However, /ɪ/ is pronounced with a relaxed tongue and /iy/ is pronounced with a tightened tongue.
/iː/, /ɪ/, /e/ & /ə/
The sounds below are easy to confuse with each other. /iː/ is a long 'eee' sound. /ɪ/ is a short sound; eg. 'in'. /ə/ is a low 'uh' sound and is used in unstressed syllables; eg. in /ðə/. /e/ is short sound; eg.
When a vowel makes the sound of a particular letter, then it is a short sound. However, when the vowel sounds like the letter's name, then it makes a long sound.
Short vowels usually appear at the beginning of the word or between two consonants. Examples of short vowels are found in the words: cat, pig, bus.
The ʃ sound is from the 'Consonants Pairs' group and it is called the 'Voiceless palato-alveolar sibilant'.
The ʧ sound is from the 'Consonants Pairs' group and it is called the 'Voiceless palato- alveolar affricate'.
To make /ʃ/, place the tip of your tongue at the front of the top of your mouth, behind where the /s/ is produced. Push air between the top of your mouth and the tip of your tongue. Do not vibrate your vocal cords.
Í, í (i-acute) is a letter in the Faroese, Hungarian, Icelandic, Czech, Slovak, and Tatar languages, where it often indicates a long /i/ vowel (ee in English word feel).