First, Second, Third Conditionals (Advanced)
"If something (be) important enough, you (try). Even if the probable outcome is failure." ― Elon Musk
"If something's important enough, you should try. Even if the probable outcome is failure." ― Elon Musk
If I (be) a scientist, I (invent) the time machine.
If I were a scientist, I would invented the time machine.
If you (be) a better commander, we (lose) the battle!
If you had been a better commander, we wouldn't have lost the battle!