When packing the first-aid kit, she wrote "better safe then sorry" at the top of the list as a reminder.

We used to argue over trivial matters, but that was then; this is now, and we've learned to choose our battles.

I was about to leave when, just then, the phone started ringing.

In the codebase, several modules return thenables instead of promises, which caused subtle bugs.

When integrating third-party libraries, treat any thenable returned by their API with caution until you verify it behaves like a proper Promise.

If the tenant fails to pay rent on time, then and in that event the landlord may terminate the lease with thirty days' written notice.

I remember how simple life was back then, when neighbors would stop by without calling.

The ledger contained entries thentofore unseen by the auditors.

The then and now photographs lined the museum's hallway, inviting visitors to compare past and present.