Analyzer
Sentence analysis
6Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
研究
research; study; investigationnoun, suru verb
に
direction, time, indirect object, or target markergrammar
徹し
penetrate; sink in; be understood deeply; devote oneself; do intently; be absorbed in; do throughout; do all night-> 徹するsuru verb
ている。
ongoing or resultant stategrammar