Play an opposites game. For example an adult could say ' I sleep at night but I am awake during the .....'can the child reply day? 'The sun is hot but ice is ...' can the child reply cold? Here are more examples you could try: Big- Small, Above-Below, In-Out, Full-Empty, Boy-Girl, Hard-soft, Wet-Dry.
Next Steps: Develop language using more obscure or less familiar opposites for example: Heavy- Light, Sharp-Blunt, Rough-Smooth.
