Analyzer
Sentence analysis
9Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
高等科
advanced course; higher departmentnoun
で
location, means, or scope markergrammar
数学
mathematicsnoun
を
object markergrammar
専攻
major; specialization; field of studynoun, suru verb, no-adjective
し
light/support verb with a noun or noun-like phrase-> するgrammar
ている。
ongoing or resultant stategrammar