他有一双大眼睛。

Tā yǒu yì shuāng dà yǎnjīng.

He has a pair of big eyes.

她有长长的头发、大大的眼睛。

Tā yǒu chángcháng de tóufa, dàdà de yǎnjīng.

She has long hair and big eyes.

好像有东西掉进我的眼睛里了。

Hǎoxiàng yǒu dōngxi diào jìn wǒ de yǎnjīng lǐ le.

It seems something has gotten into my eye.