The doctor made that mistake by chance(改为同义句)

问题描述:

The doctor made that mistake by chance(改为同义句)

The doctor happened to make that mistake.
happen to = by chance 偶然
希望帮助到你~

The doctor didn't mean to make that mistake.
The doctor had no intention to make that mistake.
希望帮到你!

The doctor made that mistake by accident