please turn off the printer

please turn off the printer please turn off a printer是什么意思急求 Please turn off the light could (someone) please turn off the tv please turn off the _____(record) ______(not turn) off the light,please. please tirn off a printer是什么意思 please turn off the radio.为什么off是副词! Forbidden,Please turn off Kate,please turn off the light( )you leave the 英语翻译Before leaving the classroom ,please turn off the lights Please turn off the light.（改为否定句）