ジョンは性格が陽気だ。
Sentence Analyzer
English Translation
John is cheerful by nature.
Furigana
ジョンは性格 が陽気 だ。
Romanji
Jon wa seikaku ga yōki da.
Words
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
性格
(せいかく)
character; personality; disposition; nature
が
(が)
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
陽気
(ようき)
cheerful; jovial; merry; lively; weather; season; spirit of yang
だ
(だ)
be; is; indicates past or completed action; indicates light imperative