In fact, according to them, nothing ever really had happened since the beginning of the world.

I want you to see exactly what's happened to me since the last time we met.

What might have happened since then, we had no idea.

And he's had a lot happen to him since then.

A few interesting things have happened since I last saw you.

He didn't like most things that had happened since the Change.

This has happened since the 1890's and will continue to happen.

So what has happened since the beginning of this year?

Just think back over the things that have happened since last night.

Something has happened to the play group since that day.