First, there are “what ifs” that are plausible but either unlikely or irrelevant now (“What if I become ill?”; “What if I lose my job, even though I’m getting good feedback?”; “What if I stop loving ...

A verb is a word which describes an action - for example, walk, work, drive. Adverbs are words which describe how the actions described by verbs are performed. He walked slowly - (How did he walk?