everyone=everybody，everyone每人，大家，人人，复合不定代词只相当于名词,在句中用作主语、宾语和表语如用作主语。
every one是两个词，既可用来指人，也可用来指物，等于each one，后面可跟介词of。
1、The scene was astonishing to me, to every one standing by.
这情景使我和每一位旁观者都很惊诧。
2、He was her distant relative, as was everyone else on the island, come to think of it
想起来了，他和岛上的其他人一样，都是她的远亲。
扩展材料：
everyone是不定代词，意思是“每个人，人人”，其同义词是everybody。作主语时，谓语动词用单数形式.everybody其后不能接of短语要改成every one后才能加of短语。【音标】：['evriwʌn] 【词典解释】：代词 pron. 1. 每人,人人
Everyone vs. Every One.
The pronoun everyone may be replaced by everybody. It is used to refer to all the people in a group. Written as two words, every one emphasizes each individual who makes up a group, and it means each person.
所以 everyone 是指所有一个group里的所有人 而every one是强调每一个个体。比如 如果我说 I'd like to thank every one of you. 我想要感谢你们中的每一个。这里就不可以用everyone of you
参考资料：百度百科-everyone