If dogs could talk, they would ask for food all the time.
correct
If I would ask you to stay, would you?
incorrect - If I asked you to stay, would you?
I'd fly to school every day if I can.
incorrect - I'd fly to school every day if I could.
People would be healthier if they would do more sport.
incorrect - People would be healthier if they did more sport.
If I would have a lot of money, I would buy a big house.
incorrect - If I had a lot of money, I would buy a big house.
If our elephant is hungry, I will give it a bunch of bananas.
correct
If I had a superpower, I will want to fly.
incorrect - If I had a superpower, I would want to fly.
If I were the President, I would tax super-rich sports stars.
correct
If I have time, I'll help you.
correct
I'd be very surprised if I saw a cow on the roof.
correct
If you lend me 20Ł, I'll pay you back tomorrw.
correct
If I met an alien, I would shake its hand.
correct
The plants will grow faster if we will water them more often.
incorrect - The plants will grow faster if we water them more often.
If we would ban violent video games, people would still play them.
incorrect - If we banned violent video games, people would still play them.
If I see a talking bear at the station, I would take it home.
incorrect - If I saw a talking bear at the station, I would take it home.
Your passport would get full if you visited all the countries in the world.
correct
If it rains tomorrow, I'll bring an umbrella.
correct
I'll miss the meeting if the train is late.
correct
I'll lend you this book if I will finish reading it.
incorrect - I'll lend you this book if I finish reading it.
You will be extremely tired if you didn't sleep for a month.
incorrect - You would be extremely tired if you didn't sleep for a month.