你好。1 I have no other friend / friends except you ---------在这里，单数和复数都是正确的。2 She drinks no other milk 。she only drinks this kind. ------milk是不可数名词，这里只能是单数。3 以下是习惯用法，只能用单数：
Mary is taller than any other girl here.==No other girl here is as / so tall as Mary...
