This line is a lyric from a song: 「どっかから現れた 感情が僕だ」 What is the が particle here
used for? I've learned that the が particle would usually tie two nouns
together as in, A is B, or something to that effect, but I can't see how it
works in this sentence.
CC BY-SA 4.0
2019-11-15T07:24:21.043
73096
2019-11-15T07:42:05.137
36022
question
particle-が
The usage of が particle in linking nouns
> 「どっかから現{あらわ}れた 感情{かんじょう}が僕{ぼく}だ」

means:

僕 ＝ どっかから現れた感情

どっかから現れた is a relative clause that modifies 感情.

> "The emotion that has appeared from somewhere is me."

It is saying "I am merely that emotion (itself)." To paraphrase it, it means:

> "I am (only) the emotion that has appeared from somewhere."
CC BY-SA 4.0
2019-11-15T07:42:05.137
73097
2019-11-15T07:42:05.137
73096
answer