I was thinking, what if we leave early to avoid the traffic tomorrow?

The Issuer shall remit the funds to the Trustee when, as, and if the payment event described in Section 3 occurs and the required documentation has been received.

Hand me the book, if you please.

I'll lend you my car only if you promise to fill the tank.

Whether we can expand the lab is a big if, yet the team is drafting plans in case funding comes through.

When he suggested we'd finish the project in a day, I just said, if pigs had wings they would fly, to show I didn't believe him.

One would lose one's head if it wasn't attached around here, considering how often people misplace their phones and wallets.

Two propositions are equivalent if and only if they imply each other.

I think, if it's all the same, we should postpone the meeting until Friday.

She discovered IF through an online archive of classic text adventures.