by mistake和make mistakes的区别

　by mistake由于差错；

　make mistakes 出错；

①by mistake 错误地……

例句：I took his schoolbag as mine by mistake.我误将他的书包当作我的拿走了.

I used your ink by mistake.我用错了你的墨水。

②make a mistake 犯了一个错误，make mistakes 犯错……

例句：

He made some spelling mistakes in his test paper.在考试试卷中,他犯了拼写错误。

She made a mistake by taking the wrong textbook to class.她犯了个错,上课拿错了课本.