他会说日语。

He can speak Japanese.

He's able to speak Japanese.

Source: Tatoeba

Sentence Composition

1 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
2 会说 huìshuō fond of talking; a good talker; talkative
3 日语 Rìyǔ Japanese language