吾郎は英語が得意だ。

吾郎は英語が得意だ。

Goro is good at English.

吾郎(ごろう)は英語(えいご)が得意(とくい)だ。

Gorō wa eigo ga tokui da.

は (は)

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

英語 (えいご)

English (language)

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: ゴ、われ、わが-、あ-

Meanings: I, my, our, one's own

Readings: ロウ、リョウ、おとこ

Meanings: son, counter for sons

Readings: エイ、はなぶさ

Meanings: England, English, hero, outstanding, calyx

Readings: ゴ、かた.る、かた.らう

Meanings: word, speech, language

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