grass既是可数名词，也是不可数名词。当grass表示“草”、“草地”、“青草”、“牧草”等意思时，是不可数名词；当grass翻译为“多种类的草”时，是可数名词，复数形式为grasses。
grass的中文含义及用法介绍
1、作为名词时，既可作可数名词，也可作不可数名词。意为草;青草;牧草;禾本科植物;草地;草坪;草场;牧场。
例句：The dry grass caught fire.
干草着火了。
Keep off the grass.
请勿践踏草地。
Small things stirred in the grass around the tent...
一些小东西在帐篷四周的草丛里窸窸窣窣地动着。
In the old days, there were strict fines for walking on the grass or missing a study period...
过去，踩踏草坪或旷课都会被重金处罚。
I started smoking grass when I was about sixteen.
我大约16岁的时候开始吸大麻。
Some grasses furnish us with food.
有些禾本科植物供给我们食物。
Vast plains covered in yellow grasses.
黄色禾本科植物覆盖的辽阔平原。
He lay back on the grass using his backpack as a pillow.
他用背袋当枕头仰卧在草地上。
With one accord they turned and walked back over the grass.
他们步调一致地转身走过草坪。
They'll feed out when we get to grass country.
找到草场就能喂饱。
The ponies will go to grass as soon as the better weather comes.
天气一转好，这些小马就去牧场。
2、作为不及物动词时，意为(向警方)告密，告发。
例句：His wife wants him to grass on the members of his own gang...
妻子要他向警方告发他所在团伙的成员。
His friends had begun to suspect that he was a grass.
他的朋友开始怀疑他是告密的人。
You wouldn't grass up an old mate, would you?
你不会告发老朋友的，对吗？
He was to loyal to grass on his own brother.
他很忠诚，不会告发他的亲兄弟。
