Can Fish swim?中Fish为什么大写

Can Fish swim?中Fish为什么大写 the fish can swim(译为汉语) There will be many fish to swim with me 中swim前面为什么加to What fish never swim? i am fish清华少儿英语书上有一个句子,I am fish.I can swim,I can't fly.为什么不 连词成句the water,can,Fish,in,swim She can swim like a fish 这句话对吗 l think fish can swim.(改否定句） which fish can swim faster than most boats(回答） Which fish can swim faster than more boats? I like the river _____ i can swim and fish. What is the fish`s tail for?It can help the fish swim ______