y mistake 错误地;由于差错: I took your umbrella by mistake. 我错把你的雨伞拿走了. I took your bag instead of mine by mistake. 我错拿了你的包,还以为是我的那. according to 根据,按照;取决于;据…所说 They did everything according to the plan. 按照计划,他们做了一切事情. According to the doctor,I need an operation. 按照医生的说法,我需要动一次手术.