Analyzer
Sentence analysis
7Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
大事
important; serious; crucial; valuable; precious; treasured; serious matter; major incident; crisis; great undertaking; great enterprise; great thing; safe; OKna-adjective, noun
な
adnominal form of the copula after a na-adjectivegrammar
プレゼン
presentationnoun, suru verb
を
object markergrammar
台無しにした。
spoil; ruin; mess up-> 台無しにするexpression, suru verb