Cat likes fish,doesn't it?的否定句回答

Cat likes fish,doesn't it?的否定句回答 Bob likes ice cream（否定句、一般疑问句,肯定回答） Mary doesn’t like strawb Lucy likes Chinese为什么改为否定句加doesn't? It likes fish and chicken ___,but it doesn't like rice ___. 连词成句 cat i have a it eat fish to and likes (.) His sister likes cat.(变为否定句) Ginger likes to eat fish.否定句 He likes fish.改为否定句 my sister likes fish ,but she doesn't like He likes soccer.改为否定句是He doesn't like soccer. He likes collecting stamps.变成否定句 My father doesn't like watc Lucy likes Chinese为什么改为否定句为什么加doesn't?