If there are any letters for me,can you send them on to this address?请问这里的on是什么意思,独立使用的吗?有例句最好了~

if there are any apples Are there any ticket? Sorry,there are (few ),if (any).为什么这样回答? if there is/are any problem(s)怎么说正确? write about the famous places if there are any.are there any famous places in their country? Give me some if there is/are any为什么用any不用some? you know if there are any public restrooms around here?为什么要用any? Do you know if there are any public restrooms around here中为什么用any are there any small are there any eggs? are there any pancakes? Are there any ----Are there any English story-books for us studennts in the library?A.if any B.if some C.if many D.if much答案是a.为什么? let t be an equilateral triangle whose sides are of length 1 unit .show that if any five points are 是I don't know if there are any students here对的还是I don't know if there is any student here对的 could you please tell me if there are any good museums is Newtown翻译! .If you don't know where are you going,any road will get you to there!.. Do you know if there are any public restrooms around here?是不是宾语从句? Do you know if there are any public restrooms arund here?