Using 'has yet' is correct over 'is yet' and here's why: verbs. First, try using the collective form of the verb 'to be. ' Instead of one 'decision,' phrase the sentence for two 'decisions' and see which one sounds better.. The decisions have yet to be made.

Is it have yet or has yet?

The preference is clear, but both are grammatical and there is no difference in meaning. "He has yet to receive an appointment" states that the person being referred to has not, at this point in time, "received an appointment", but is expected to.

Has yet to definition?

DEFINITIONS1. used for saying that something has not happened or been done up to the present time, especially when you think it should have happened or been done. The Scottish Office has yet to make a formal announcement.