Is there any adverb in the below sentences?
Here in this link, it says other adverbs can be used in similar constructions with various effects.
He is liable to get in trouble.
She is certain to do well in college.
But I don't know what word/phrase is the adverb here. I can identify "liable" & "certain" as adjectives - but can't guess which one is adverb that web page was referring to.