Hi! I'm new to mumsnet and am actually a granny so bear with me if I'm starting a topic which has already been covered. If it has been covered perhaps someone could point me in the right direction. My grandchild of 2.8 years is a fluent talker with a vast vocabulary but he can't pronounce S, Sh or F. Its obviously many years since my DDs were 2 so perhaps I'm expecting too much of him. Can anyone out there help me?