This is how we form second conditional sentences. The second table shows some mistakes which are commonly made by learners when using second conditionals:
|If I had more time, I'd (I would) travel more.
||I wouldn't (would not) refuse if you offered me $10,000.
||What would you say if you met Queen Elizabeth?
|If I would have enough money, I would buy a new computer.
||If I had enough money, I would buy a new computer.
||We use the past simple (I had) in the if-clause. It shows we are talking about something which is unlikely to happen or is an imaginary situation.
|If you didn't hurry so much, you will feel more relaxed.
||If you didn't hurry so much, you would feel more relaxed.
||The structure of the main clause is would + infinitive.