grass是可数名词

grass既是可数名词也是不可数名词,grass作“草”“草地,牧场”解时多用作不可数名词,而作“禾本科植物”解时多用作可数名词。复数grasses。

The lawn contained a mixture of grasses.

草坪上生长着各种青草。

The flower beds were overrun with grasses

花坛里杂草横生。

A sweet fragrance rose from the wild grasses.

野草散发出芳香。

In grasses the leaves elongate in the dark and break through the surrounding coleoptiles.

在草本植物中，叶子在黑暗中伸长，穿破包围它们的胚芽鞘而生长。

On scented grasses fresh and pleasing to the eye lay fallen blossoms in gay profusion.

芳草鲜美，落英缤纷。