AnalyzerSentence analysis6SpansSentence彼は熱心な研究者だ。1000 character limitAnalyzeSentence彼かれは熱ねっ心しんな研けん究きゅう者しゃだ。Span Details彼かれhe; him; boyfriendpronounはtopic markergrammar熱ねっ心しんenthusiastic; eager; zealousna-adjective, nounなadnominal form of the copula after a na-adjectivegrammar研けん究きゅう者しゃresearchernounだ。plain copulagrammar