Analyzer
Sentence analysis
8Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
長年
many years; a long timenoun, adverb
の
possession, attribution, nominalizer, or nominal linkergrammar
研究
research; study; investigationnoun, suru verb
を
object markergrammar
成し遂げ
accomplish; achieve; carry through to completion-> 成し遂げるichidan verb
た。
past tense or completed actiongrammar