how Its could be? In russian language, we have a phrase, that says that if some action was happend in the past, then i could do something after this action but in the past too. But as well as this action was not happend, i didnt do this something. For example: at 5.00 pm i tell to my mother: "if my sister had stop playing games before 3.00 pm, i could clean her room in 4.00 pm" In russian we use the words "Если бы.... то...." How can i say this phrase in english?