Analyzer
Sentence analysis
8Spans
Sentence
Span Details
何の
what; what kind of; what sort of; no ...; any; adds emphasis to the preceding word; no; not at all; oh (it's nothing)pre-noun adjective, interjection
理由
reason; grounds; motivenoun
か、
question or alternative markergrammar
彼
he; him; boyfriendpronoun
は
topic markergrammar
突然
sudden; abrupt; unexpectedno-adjective, adverb
笑い出し
burst into laughter; start laughing-> 笑い出すgodan verb
た。
past tense or completed actiongrammar