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Your sentence
我 看见 他 了
Words in this sentence
我
I; me; my
看见
to see; to catch sight of
他
(third-person singular) (since the early 20th century, usu. male) he; him; his; (bound form) other; another; some other (as in 他日 (tārì) and 他人 (tārén))
了
(completed action marker); (modal particle indicating change of state, situation now); (modal particle intensifying preceding clause)
Particle