Usage patterns
〈人〉はアクティブだsomeone is active/energetic
She's always active and energetic.
アクティブに〈動詞〉to do something actively/energetically
I spend my days off actively.
アクティブな〈人〉an active, energetic person
He's an active person who's always exercising outdoors.
アクティブに参加するto participate actively
Please participate actively in the meeting.