渡辺が名字です。

渡辺が名字です。

Watanabe is my family name.

渡辺(わたなべ)が名字(みょうじ)です。

Watanabe ga myōji desu.

が (が)

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

名字 (みょうじ)

surname; family name

です (です)

be; is

Readings: ト、わた.る、 -わた.る、わた.す

Meanings: transit, ford, ferry, cross, import, deliver, diameter, migrate

Readings: ヘン、あた.り、ほと.り、 -べ

Meanings: environs, boundary, border, vicinity

Readings: メイ、ミョウ、な、 -な

Meanings: name, noted, distinguished, reputation

Readings: ジ、あざ、あざな、 -な

Meanings: character, letter, word, section of village