修辭是什麼? 他的心是一根火柴，燃點了生命之光?

metaphore (隱喻)used to describe something else different from its normal use to show the two things have SAME
qualities
to make description more powerful;eg:-
His heart is a match;(一根大柴)

lighting the light of life ! (燃點生命之光)

隱喻

直接用"火柴"比喻"心"和它的代表意義。