ジョンはチェスが得意だ。

ジョンはチェスが得意だ。

John is good at chess.

ジョンはチェスが得意(とくい)だ。

Jon wa tyesu ga tokui da.

は (は)

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

チェス (チェス)

chess

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

得意 (とくい)

triumph; prosperity; pride; one's strong point; one's forte; one's specialty; frequent customer (client, etc.)

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: トク、え.る、う.る

Meanings: gain, get, find, earn, acquire, can, may, able to, profit, advantage, benefit

Reading: イ

Meanings: idea, mind, heart, taste, thought, desire, care, liking