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一直以为自己完全掌握了grass是什么意思，直到英语培训机构的老师给我详细讲了grass是什么意思之后我才知道自己错了。今天的日常英语一起来看看究竟grass有什么特殊的含义。
一、详细解析grass是什么意思1. 草；青草；牧草（n.）
eg: The boy was observing the veins on a blade of grass.
这个男孩正在观察一片草叶上的纹理。
2. 禾本科植物（n.）
eg: My grandpa likes to keep some ornamental grasses.
我爷爷喜欢养一些观赏性草本植物。
3. 草地；草坪；草场；牧场（n.）
eg: The sign in the park says “Keep off the grass”.
公园里的标牌上写着“不要践踏草坪”。
4. 向警方告密的人（通常指罪犯）（n.）
eg: The gang leader was punishing a grass.
黑帮头目正在惩罚一个向警方告密的人。
5.（向警方）告密，告发（v.）
eg: He was not sure whether he should grass on members of his gang.
1. put sb out to grass （因年老等）让某人离职
eg: My grandmother was put out to grass when she was near 60.
我祖母在将近60岁的时候被解雇了。
2. let no grass grow under your feet（做事）不拖拉，不磨洋工
eg: My father always tells me “let no grass grow under your feet” when I’m lazy.
我偷懒的时候，我爸爸总是跟我说：“不要拖拖拉拉”。
3. as green as grass 少不更事,无生活经验
eg: He was as green as grass when he graduated from college.
他从大学毕业的时候，一点生活经验都没有。
4. cut one's own grass 自食其力
eg: He began to cut his own grass after he enter college.
进了大学以后，他就开始自食其力了。
5. the grass is greener on the other side 草是那边绿；这山望着那山高
eg: The saying “the grass is greener on the other side” means we are unhappy with what we have, and we admire other people’s situation.
谚语“这山望着那山高”指的是我们不满足于自己所拥有的，却羡慕其他人的境遇。
三、grass前面的介词别用错1.on the grass 指“在草地上”，通常暗示草长得低矮。
eg: She was lying on the grass.
她躺在草地上。
2.in the grass指“在草丛中”，暗示草长得高大茂盛。
eg: The boy was hiding in the grass.
这个男孩躲在草丛里。
3.over the grass也指“在草地上”。
eg: He quickly skipped over the grass.
他飞快地越过了草地。
4.at grass 指的是“放牧或闲着”。
eg: My father was at grass for a week because he was so tired.
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