mistake 系单数定系复数,by mistake和by mistakes的区别，举个例子

网友回答

mistake可数 make a mistake 单数
　　make mistakes 复数
　　mistake
　　KK: []
　　DJ: []
　　vt.
　　1. 弄错,误解
　　You mistook my meaning entirely.
　　你完全误会了我的意思。
　　I mistook the number and went to the wrong room.
　　我记错号码,走错了房间。
　　2. 把...误认为[(+for)]
　　He was mistaken for the minister.
　　人们错把他当作牧师了。
　　3. 挑选错;估计错
　　It was wise of you not to mistake your own strength.
　　你没有错误估计自己的力量是明智的。
　　vi.
　　1. 弄错,搞错
　　You mistake, my dear.
　　亲爱的,你错了。
　　n.
　　1. 错误,过失;误会[C][U]
　　Tom didn't make a single spelling mistake in his position.
　　汤姆在这篇作文里一个字也没拼错。

网友回答

by mistakes误打误撞地
　　by mistake 错误地
　　mistake可数 make a mistake 单数
　　make mistakes 复数
　　mistake
　　vt.
　　1. 弄错,误解
　　You mistook my meaning entirely.
　　你完全误会了我的意思。
　　I mistook the number and went to the wrong room.
　　我记错号码,走错了房间。
　　2. 把...误认为[(+for)]
　　He was mistaken for the minister.
　　人们错把他当作牧师了。
　　3. 挑选错;估计错
　　It was wise of you not to mistake your own strength.
　　你没有错误估计自己的力量是明智的。
　　vi.
　　1. 弄错,搞错
　　You mistake, my dear.
　　亲爱的,你错了。
　　n.
　　1. 错误,过失;误会[C][U]
　　Tom didn't make a single spelling mistake in his position.
　　汤姆在这篇作文里一个字也没拼错。