An Incident with a Shelf

Past only tells you when. It doesn't tell you how.

It happened, or it didn't. How many ways can there be?

Two — and neither is about when. One shows you the whole action, finished. The other catches you inside it, still going.

So the tense is fixed. It's the aspect that moves.

"I was carrying the basket back to the shelf..."

"...and then the shelf gave way."

There. One verb sets the scene, unfinished. The other cuts across it, complete. That's the whole pattern: "while" for the background, simple past for what interrupts it.

So the shelf didn't "give way" slowly. It just — happened.

"While the clerk was carrying the basket, I was already writing my report of it."

Neither of those needs the other to finish first. Two actions, both unfinished, both running at once. Continuous doesn't need an interruption — it only needs to still be going.

Marcos used to trip over that basket every week.

That's not the same as saying "I tripped."

No. A single complete event is simple past. A habit — repeated, and now finished — takes "used to." A different shape from either of the others.

A photograph, a film still running, and a pattern that held for a while and then stopped.

Hebrew makes this almost plainer than we do. Its verbs barely ask when at all — they ask only whether the action is complete or still unfolding. Aspect first; time, if you need it, comes from context.

Which is exactly what I've been asking you to hear under the English.

So it's official. The shelf's fall was complete. My blame is ongoing.

Now you've got it.