Is there any robot to help us study?中的any是什么用法

Is there any robot to help us study?中的any是什么用法 Is there any robots to help us study?中为什么要用to help? Is there any chance for us to live with out Is there any food for us ____ 我这英语用法对吗,Please contact us if there is any problem Is there any foreign friend who wants to study Chinese?Pls c Do you have any idea___to do to help us? is there any bread here 中any是什么词性. Is there any problem.Translate to Mandarin Is there an answer to any question? is there any 或 are there any --Are there any chairs here for us to sit in?