He took part in the race.
Kare wa re-su ni sankashita.
he; him; his; boyfriend
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
race; lace; lathe
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
Readings: ヒ、 かれ、 かの、 か.の
Meanings: he, that, the
Readings: サン、 シン、 まい.る、 まい-、 まじわる、 みつ
Meanings: nonplussed, three (in documents), going, coming, visiting, visit, be defeated, die, be madly in love, participate, take part in
Readings: カ、 くわ.える、 くわ.わる
Meanings: add, addition, increase, join, include, Canada