Analyzer
Sentence analysis
11Spans
Sentence
Span Details
筆者
writer; authornoun
は
topic markergrammar
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
問題
question; problem (on a test); problem; issue; matter; doubt; public discussion; controversy; trouble; difficulty; inconveniencenoun
に
direction, time, indirect object, or target markergrammar
ついて
about; concerning; regarding-> 就いてexpression
長年
many years; a long timenoun, adverb
研究
research; study; investigationnoun, suru verb
し
light/support verb with a noun or noun-like phrase-> するgrammar
てき
change continuing toward the present point-> てくるgrammar
た。
past tense or completed actiongrammar