Using "быть" in a sentence
I found this on another website for teaching Russian. I have a question about it though. Isn't the Russian verb "to be" only suppose to be used for the past, like in "You were..."? Or can it be used for future tenses also? This is the sentence I found on the other site:
"Если бы ты была медсестрой, ты бы работала в больнице."
Thank you for answering,
God bless you all in His Word Deeply.