To be bothered is an idiom ( A speech form that is peculiar to itself within the usage of a given language. --- American Heritage Dictionary ) and a negative polarity item. ) Grammatically, the sentence is in the passive voice, which means it has a form of the verb be plus the past participle of the principal verb, bothered .
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.