Analyzer
Sentence analysis
8Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
無償
without compensation; unpaid; gratuitous; free of charge; complimentaryno-adjective, noun
の
possession, attribution, nominalizer, or nominal linkergrammar
奉仕活動
volunteer work; community service; voluntary activitynoun
に
direction, time, indirect object, or target markergrammar
参加
participation; joining; entrynoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar