"He has big eyes" 是表达这个意思的常用说法。
"Big" 是形容词，用来形容名词的大小，如 "big house" (大房子)。
例句：
He has big eyes, it makes him look innocent. (他有着大大的眼睛，这让他看起来很天真。)
She always comppments him on his big eyes. (她总是夸他的大眼睛。)
He inherited his big eyes from his mother. (他的大眼睛是从他母亲那里继承的。)