for teachers of English and their students
When to use the past tense after what if?
Use what if to express possibility. If you use the past tense, you are talking about possibility in the future.
For example, a phrase like this:
What if I started my own business?
(you will be asked to create an account if you do not have one)
At PhraseCat.com you can study grammar points and practise their application right away.