他是个天文学专家。

He is an expert in astronomy.

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 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=2 是 shì variant of 是 shì
=3 个 gě used in 自個兒 zìgěr
=3 个 gè
  1. (classifier used before a noun that has no specific classifier)
  2. (bound form) individual
=3 个 gè variant of 個 gè
4 天文学 tiānwénxué astronomy
5 专家 zhuānjiā expert; specialist