英语问题~~~She fought with a boy who said something bad about he

She fought with a boy who said something bad about her father.改写为原因状语从句。
She fought with a boy because he said something bad about her father.
People are afraid of AIDS because they know little about it.用if进行同义句转换。
People are afraid of AIDS if they know little about it.
Even if they have AIDS,it's still safe to eat and play with them.翻译成中文
即使他们患了艾滋，和他们一起玩，共同进餐还是很安全的。
答案满意吧.

The reason why she fought with a boy is who said something bad about her father.
我想问这个怎么用if来改。= =
即使他们患了艾滋，我们依旧可以放心地跟他们一起玩，共同进餐。