It is likely to rain.
Here likely is a predicate adjective with to rain as the complement (correct me if I'm wrong).
Who took the cookie? It was likely Bob.
Is likely also a predicate adjective here, or is it an adverb modifying was? It certainly seems like the case if one were to substitute probably in its stead, but I'm not certain.
It is likely to rain.
why is it wrong to argue that likely is an adverb modifying is?It is likely to rain
and notIt is likely Bob
, right?