Susan can't go to the next town. There's no bus.
If there were a bus, Susan could go to the next town.
I can't buy Doshirak. I don't have enough cash with me.
If I had enough cash with me, I would buy Doshirak.
John can't catch up. His scooter isn't very powerful.
If John's scooter were more powerful, he could catch up.
I can't phone Vladimir Putin. I don't know his phone number.
Ih I knew Putin's phone number, I would call him.
Peter can't take a holiday. He has too much work to do.
If Peter didn't have so much work to do, he could take a holiday.
Bill makes a lot of money. He works hard.
If he didn't work hard, he wouldn't make a lot of money.
George doesn't feel well. He eats all the wrong foods.
If George didn't eat all the wrong foods, he would feel well.
I won't finish the book. It isn't very interesting.
If the book were interersting, I would finish it.
Richard isn't happy. He's married.
If he weren't married, he would be happy.