It's just that you know ahead of time what you'll see.

You would need to know ahead of time how to do it.

On the other hand, consider if we did know ahead of time which way the market would turn.

For once, one knows ahead of time when a Glass piece will end.

Let your child know ahead of time about the visit and leave it at that.

To know ahead of time where we were going would have been a mistake.

It's just that they want to know ahead of time.

And how about all these things he knows ahead of time, such as when I was due home?

We will let you know ahead of time if this is the case.

Why let her know ahead of time that he was here?