There are some signs in our school.(改为否定句)
追答There aren't any signs in our school.
本回答被提问者采纳There are some signs in our school.(改为否定句)
追答There are not any signs in our school.
这是一种矛盾关系的逻辑否定,说“有些是”时,其否定是“全不是”。若说“有些不是”时,否定就是“全都是”
停课不停学 some 和any的特殊用法