Even if means whether or not.
It is used to emphasize that something will still be true if another thing happens.
- Even if you take a taxi, you’ll still miss your plane.
- You will go to that cinema even if they don’t allow you.
- Even If he studies hard, he can’t be successful.
- He will come even if he is tired.
- I’ll go even if you forbid me to.
- Even if Mark was offered a job in Paris, he wouldn’t accept it.
- Even if I wash my car, it still won’t look new.