[QUOTE=Frank Antonson;784526]I saw that a thread had been closed on this subject.
It need not be reopened on my account, but a sample sentence was "I talked to him".
That sentence seems to me to clearly have a prepositional phrase in it. The sentence " I told him." might serve as a better example. What I told him would be the direct object, but I am not sure that it is necessary for the sentence to be complete. "him" would clearly be the indirect object. I think that this would be an example of an indirect object without a direct object -- unless you insist that the direct object is understood.[/QUOTE]
I don't see that there's a contradiction. Even if the DO is tacit, the sentence clearly has no DO. I told him is one sentence and I told him that is another sentence. One has a DO and the other doesn't.
I'm beginning not to understand what's being discussed.