Do not confuse anyone with any one. Anyone always refers to people. In the phrase any one, 'one' is a pronoun or a determiner that can refer to either a person or a thing, depending on the context. It is often followed by the word of. Parting from any one of you for even a short time is hard... None of us stay in any one place for a very long time. In these examples, any one is a more emphatic way of saying any. Anyone or anybody is mainly used in questions and negative sentences. You use not anyone instead of someone in negative sentences. There isn't anyone here... There isn't anybody here.

切勿混淆anyone和any one。anyone總是指人，而短語any one中的one可以作代詞也可作限定詞，根據上下文既可指人也可指物，後面常跟of：Parting from any one of you for even a short time is hard（要離開你們中的任何一人，即使時間很短暫，也是件令人難受的事），None of us stay in any one place for a very long time（我們誰也沒有在任何一個地方久留過）。在上述例子中，any one是any的強調性說法。anyone或anybody主要用於疑問句或否定句。在否定句中不用someone，而用not anyone：There isn't anyone here（這兒沒有人），There isn't anybody here（這兒沒有人）。