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Sentence analysis
9Spans
Sentence
Span Details
昨日、
yesterdaynoun, adverb
高速道路
highway; expressway; freeway; motorwaynoun
で
location, means, or scope markergrammar
重大
serious; important; significant; gravena-adjective, noun
事故
accident; incident; trouble; circumstances; reasonsnoun
が
subject markergrammar
発生
occurrence; outbreak; emergence; generation; production; development; growth; ontogenynoun, suru verb
し
light/support verb with a noun or noun-like phrase-> するgrammar
ました。
polite pastgrammar