ジョンは熱心な勉強家だ。

ジョンは熱心な勉強家だ。

John works hard.

ジョンは熱心(ねっしん)な勉強家(べんきょうか)だ。

Jon wa nesshinna benkyōka da.

は (は)

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

熱心 (ねっしん)

zeal; enthusiasm

勉強家 (べんきょうか)

diligent student; studious person

だ (だ)

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

Readings: ネツ、あつ.い

Meanings: heat, temperature, fever, mania, passion

Readings: シン、こころ、 -ごころ

Meanings: heart, mind, spirit, heart radical (no. 61)

Readings: ベン、つと.める

Meanings: exertion, endeavour, encourage, strive, make effort, diligent

Readings: キョウ、ゴウ、つよ.い、つよ.まる、つよ.める、し.いる、こわ.い

Meaning: strong

Readings: カ、ケ、いえ、や、うち

Meanings: house, home, family, professional, expert, performer