What about? - Writelike

Prepositional phrases starting with about can tell us what an action is related to or concerned with

There was no time to sympathise about her head injury.

There was no time to sympathise about the loss of the plane.

There was no time to sympathise about something already settled.

Write your own variation, changing what the speaker is sympathising about.

We can also use about—or alternatively the word on—to tell us what a thing is concerned with

Klaus, I expect you to read all of the books about Peru that I have, and make careful notes.

Klaus, I expect you to read all of the books about giant spiders that I have, and make careful notes.

Klaus, I expect you to read all of the books on the meaning of life that I have, and make careful notes.

Sometimes you can use on to show what an action is about, but it's not very common. It really depends on the verb. You might:

Think on the boss' suggestions

Work on a remote controlled hovercraft, or

Speculate on the contents of a dragon's hoard.

Can you think of other examples?

Write a variation, changing what the books are about (you can use 'about' or 'on' for this one).