CapnSal
Which of the following are correct usage of Likely as an idiom?
1) Likely to
2) Likely that
3) Likely to be
I have come across multiple sources that tell me all are correct or that only "likely to" is the correct idiom.
I can help with this!
They're
all correct. The one you use depends on what comes after. To use (1), you need to have a verb immediately after:
They are not likely to come to the cotillion this morrow.
This is likely to be our last chance to hug a cactus.
Notice that because
be is a verb, case (3) in your original question is actual just a specific use of case (1).
You can use case (2) when you want to put a new
subject and verb after the phrase:
It is likely that alligators will kill us all someday.
She considers it most likely that clouds are alien spy vehicles.
It should also be mentioned that
likely can be used without either of these constructions as just a standalone adverb or adjective:
It will likely rain aliens today.
She is the likely frontrunner for her party's nomination.
I hope that helps!