1、anyone指“任何人”,不指“任何一个”,any one指“任何一个”,但是有时也指“任何人”,现在比较不普遍那样说;
2、anyone不能同one或one's同时使用,如Ifanyonecomes, ask him to wait里面的him不可替换成one;
3、anyone后不可接动词的否定形式,所以不能说Anyone cannot do it,该说No one can do it。
I would prefer it if you didn't tell anyone.
我希望你别告诉任何人。
I don't want anyone getting the wrong idea.
我不希望任何人有所误会。
Keep down! You mustn't let anyone see you.
蹲下!一定不要让人看见你。
It was the best possible surprise anyone could have given me.
那是我曾感受过的最大惊喜。
Have you discussed the problem with anyone?
你与谁商量过这个问题吗?
She wasn't anyone before she got that job.
她在得到那份工作之前不过是个无名之辈