Analyzer
Sentence analysis
7Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
日夜
day and night; around the clock; constantlyadverb, noun
研究
research; study; investigationnoun, suru verb
に
direction, time, indirect object, or target markergrammar
励ん
work hard; strive; devote oneself-> 励むgodan verb
でいる。
ongoing or resultant state-> ているgrammar