我不知道他是日本人。

I didn't know that he was Japanese.

Source: Tatoeba

Sentence Composition

1 我不知道 wǒbùzhīdào I don't know.
2 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)
3 是日 shìrì
  1. (formal) this day
  2. that day
4 本人 běnrén
  1. I; me; myself
  2. oneself; yourself; himself; herself; the person concerned