| http://www.w3.org/ns/prov#value | - A 4 year old should be intelligible 100% of the time, although I think can pronounce up to 80% of sounds correctly.this is a chart that shows when a child should master a sound by so, for example the 'k' sound at the beginning can be mastered at 2.5, but should be there by 3.5.However, if you believe that your child's pronunciation is unclear because you copy his baby words back to him, make an ef
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