"R-mode of vowels"©_
Channel: tokyomaths 2
Date: 29/12/2014

A mute of trumpet is an instrument, but it does not have its own sound, because it is a modifier of the sound of a trumpet. Without any sound of trumpet, a mute has nothing to modify. R has no sound by itself, because R is a modifier of the vowel sound. R is always modifying a vowel sound. R without vowel sound to modify cannot exist. R is the only one consonant that cannot make any sound without vowel. 
R-modification of vowels. "R-mode©"
When a word has a L sound then a vowel sound, it is pronounced naturally the L sound then the vowel. When a word has a R sound then a vowel, it is pronounced as the R sound covers all the length of this vowel.
You hear the R sound throughout the vowel. The people who have some difficulty to distinguish the difference between an L sound and an R sound, must know that the difference can be heard as hearing the vowel. The same thing can be said for long schwa + R sound of a W and R combination, such as work, world. Other words with long schwa + R sound, such as girl, bird.
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