他の少年達は笑いました。

other (esp. people and abstract matters)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to laugh; to smile; to sneer; to ridicule; to be dumbfounded; to be flabbergasted