i don't have any friends为什么要加s

i don't have any friends为什么要加s I don't have any friends. i don't have any banana,but i have some peach为什么后面不要加es和s呢? I don't have friends和I don't have any friends谁是对的? I don't have any close friends to talk to. I don't have any friends to talk to和 I have no friends to ta i don't have any apples与i don't have any apple谁正确,为什么 在句子中怎么区分要加S和ES或是保持原形.如：I don't have any bananas ,but i have I don't think any of my friends have seen them.对不对? 为什么I have no brothers.= I don't have any brothers.I haven't I don't have many friends here. We don’t have any friends .改为同义句