Analyzer
Sentence analysis
8Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
秘密
secret; confidential; private; mystery; secret (to success, etc.); key; esoteric teachingsnoun, na-adjective
を
object markergrammar
守る
protect; guard; defend; keep (a promise); observe (rules); followgodan verb
と
quotation, conditional, companion, or and markergrammar
約束
promise; agreement; one's word; contract; appointment; engagement; date; convention; rule; destiny; fatenoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar