Do you have any fruit 为什么不加s

Do you have any fruit 为什么不加s DO you have any other sizes?any other不是加名词单数吗?这句后面为什么加S? do you have any questions和do you have any problem加s的问题 Do you have some fruit?和Do you have any fruit?哪一句是正确的 Do you like fruit?还是加s? buy some fruit fruit为什么不加s do you have any apples与do you have apples的区别,可以不加any吗? If you have any question,you can ask me 为什么question不加s?我老师居然 any后名词加s吗如Do you have any brother还是brothers? Have you got any fruit?我想问一下fruit要不要加复数个 为什么fruit可以不加s也可以加s? 为什么fruit不加s,而vegetable加s