Have - has two meanings: 1. to possess - no passive form 2. to be active in something - has passive form The reasons should be clear. Some examples: Lots of fun was had at the party by all. Lots of sex was had at the party, too. A great time was had by all. Most of us had a great time. A terrible time was had by only a few. PS> I think you should master basic grammar before you go on to advanced stuff like this.

Hmm...can "have" be passive? It sounds a bit old fashioned, phrases like "much fun was had". I think it can exist, but it definitely sounds old-fashioned to me.