AnalyzerSentence analysis6SpansSentenceこのナイフは錆びてしまった。1000 character limitAnalyzeSentenceこのナイフは錆さびてしまった。Span Detailsこのthis; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjectiveナイフknifenounはtopic markergrammar錆さびrust; become rusty-> 錆びるichidan verbてしまっcompletion or regret-> てしまうgrammarた。past tense or completed actiongrammar