someone和some one的区别是什么？

它们的区别我知道，先简单看个表格先

区别一：拼写和词性不同

someone是一个合成词，是代词，用于指代某个人。

some one是由两个单词组成，some是限定词，表示不确定的数量，one是名词，表示一个人。

例句：

① Can someone help me with this problem?有人可以帮我解决这个问题吗？

② I saw some one waiting outside the door.我看到有个人在门外等着。

区别二：语法用法不同

someone作为一个合成词，可以直接用作主语、宾语或宾语补足语。

some one作为两个单词，通常用作主语或宾语，不常用作宾语补足语。

例句：

① Someone called you while you were out.你出去的时候有人给你打电话。

② Some one is knocking on the door.有人在敲门。

区别三：语气和语义不同

someone通常用于肯定句，表示存在某个人。

some one通常用于疑问句或否定句，表示某个人的存在是不确定的或被否定的。

例句：

① I need someone to help me with this project.我需要有人帮我完成这个项目。

② Is there some one who can fix this problem?有人能解决这个问题吗？

someone和some one的区别主要是：

someone：某人，有人，但不知道是谁；

some one：有人(某个，某人)，知道此人，但不认识。

someone例句：

He found someone on him.
他发现有人在跟踪他。
Someone knocked on the wall and he knocked back.
有人敲了一下墙壁，他应声回敲。
I had only danced with Mary about three minutes when someone cut in.
我和玛丽刚刚跳了大约三分钟的舞，就有人来截舞。
Someone ripped off my wallet.
有人偷了我的钱夹子。
Someone came out with a most useful suggestion.
有人提出了一个非常有益的建议。

some one例句：

Once he paused to salute some one in the crowd.
一次，他停了嘴，向听众中的一个人打招呼。
Now, suppose some one to place an iron ball on the table; then will this ball run straightway towards the magnet.
这时假设有人在桌子上摆一个铁球，那么这个铁球立刻就会朝着磁铁的方向滚动过去。
She was roused from her seat, and her reflections, by some one's approach; and before she could strike into another path, she was overtaken by Wickham.
这时已经有人走近前来，打断了她的深思，使她从座位上站起来；她刚要从另一条小径过去，只见韦翰却赶了上来。
It was not long before some one knocked at the house-door and called, open the door, dear children, your mother is here, and has brought something back with her for each of you.
没过多久，有人敲门，而且大声说：“开门哪，我的好孩子。你们的妈妈回来了，还给你们每个人带来了一点东西。”
Some one left a cake on our front porch.
有人在我们的门廊上留下了一块蛋糕。