Sounds sh can be base
Other type of exercises is directed on elaboration of vibration of language.
Sounds sh can be base for statement of a sound r.
It is necessary to suggest the child to open a mouth, but without rounding of lips, and to say lingeringly a sound, having moved a first line of language a little forward to gums of upper teeth.
It is important thus that the received sound was said with a sufficient pressure of the exhaled air, at the minimum crack between a first line of language and gums.
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