AnalyzerSentence analysis4SpansSentence退屈な授業だった。1000 character limitAnalyzeSentence退たい屈くつな授じゅ業ぎょうだった。Span Details退たい屈くつboring; tedious; dull; feel bored; get bored; get tired ofna-adjective, noun, suru verbなadnominal form of the copula after a na-adjectivegrammar授じゅ業ぎょうclass; lesson; teaching; schoolworknoun, suru verbだった。past copulagrammar