But on this particular occasion, he wasn't up to his usual game.

He locked the door behind him on this particular occasion.

"I think that for this particular occasion we'll have another tune."

The question was how many risks this particular occasion called for.

On this particular occasion he had to talk to me and so the telephone called.

On this particular occasion, he was buying time, not affection.

But it didn't do him any good on that particular occasion.

On one particular occasion, he called his local police department to ask if they needed anything.

It may be presumed that he actually does so upon some particular occasions.

Usually does not drink for longer than an hour or two on any particular occasion.