She has an egg ,a sausage and water for breakfast.()

问题描述:

She has an egg ,a sausage and water for breakfast.()
She has an egg ,a sausage and water for breakfast.(改错)

She has an egg, a sausage and a glass of water for breakfast.
应该是因为那样写好像是在说 a water, 但水不能被数,不能用 a, 所以改为一杯水.