看情况决定,如:
1 - Is there any milk in the fridge? - No,there is no milk in it.(milk,
不可数名词,肯定是单数no ==not any)
2 - Is there a boy in the room? - No, there is no boy there.(boy,可数名词单数形式,顺从问话人的意愿 no==not a / an)
3 - Are there any books on Tom's desk? - No , there are no books on his desk.(books,
名词复数形式,no==not any)
---------------明白了吗?---------------