Analyzer
Sentence analysis
11Spans
Sentence
Span Details
護送船団
convoy of shipsnoun
は
topic markergrammar
敵
opponent; rival; adversary; enemy; threat; menacenoun
の
possession, attribution, nominalizer, or nominal linkergrammar
潜水艦
submarinenoun
に
direction, time, indirect object, or target markergrammar
警戒
vigilance; caution; alertness; precaution; being on guardnoun, suru verb
し
light/support verb with a noun or noun-like phrase-> するgrammar
ながら
while doinggrammar
進ん
advance; go forward; move ahead; precede; go ahead; lead; make progress; improve; deepen; heighten; intensify; be fast (clock); be ahead; gain time; do willingly; do of one's own accord-> 進むgodan verb
だ。
past tense or completed action-> たgrammar