1st OR 2nd Conditional (B1)
I don't have much money, but if I (BE) rich, I (BUY) a luxury yacht.
If I WAS/WERE rich, I WOULD BUY a luxury yacht. (2nd)
When he (BE) richer, he (BUY) a bigger luxury yacht.
When he IS richer, he WILL BUY a bigger luxury yacht. (1st)
The baby birds can't fly yet. When they (ABLE TO) fly, they (FLY) to Africa.
When they ARE ABLE TO FLY, we WILL FLY to Africa. (1st)