someone和anyone的区别：中文意思不同、用法不同以及侧重点不同。someone作为代词，意为某人、重要人物，相当于第三人称，后接谓语动词单数；anyone作为代词，意为任何人、随便哪个人，常用在否定句和疑问句中。

someone作为代词，意为某人;重要人物。常用在肯定句中，在句中相当于第三人称，所以后接谓语动词单数。

例句：There's someone at the door.

门口有个人。

Someone's left their bag behind.

有人把包落下了。

He was a small-time lawyer keen to be someone .

他是个没有什么名堂却总想出人头地的律师。

He was somebody in the law pision...

他在法律部门是个人物。

He could hear someone moving around in the room above. 

他能听到楼上屋里有人走动。

We need someone with lots of personality to head the project. 

我们需要一位富有魅力的人来主持这个项目。

How would you like it if someone called you a liar? 

如果有人说你撒谎，你会怎么想呢？  

anyone作为代词，意为任何人、随便哪个人、重要人物，用于否定句、疑问句，也用于if或whether之后，或紧接prevent、forbid、avoid等动词，代替someone。

例句：Does anyone else want to come?

还有人想来吗？

I forbid anyone to touch that clock.

我不准任何人碰那台钟。

The exercises are so simple that almost anyone can do them.

练习十分简单，几乎谁都会做。

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。

I won't tell anyone I saw you here...

我不会告诉任何人我在这儿见过你。

It seems anyone who's anyone in business is going to the conference.

似乎商界所有重要人物都将参加那个会议。