a greenback
He handed me a greenback.
他递给我一张美钞。
美钞
greenbacks — plural of greenback
美元。；纸币(尤指中央银行发行的)；尚未开始破裂的波浪。；绿背动物；[法] 美钞
尤指美元纸币
美元。
The United States dollar.
纸币(尤指中央银行发行的)
a piece of paper money (especially one issued by a central bank)
尚未开始破裂的波浪。
A wave that has not yet begun to break.
He pulled a greenback from his wallet to pay for the coffee.
他从钱包里抽出一张美钞来付咖啡钱。
用法提示：名词单数形式，作宾语，指一张美元纸币。
The old man kept a stack of greenbacks hidden under his mattress.
老人把一叠美钞藏在床垫下。
用法提示：名词复数形式，作介词宾语，指多张美元纸币。
She exchanged her euros for greenbacks at the currency exchange.
她在货币兑换处把欧元换成了美钞。
用法提示：名词复数形式，作介词宾语，指美元纸币作为兑换目标。
He handed me a greenback.
他递给我一张美钞。
常用复数形式
The drawer was full of greenbacks.
抽屉里装满了美钞。
The seller insisted on being paid in greenbacks.
卖家坚持要用美钞支付。
grammar · medium
易错句子I have two greenback.
正确表达I have two greenbacks.
错误：greenback 是可数名词，复数形式为 greenbacks。原句缺少复数标记，改正后加上 -s 符合语法。
grammar · medium
易错句子I don't have any greenback.
正确表达I don't have any greenbacks.
错误：在否定句中，any 后接可数名词复数形式。greenback 必须用复数 greenbacks 表示泛指。
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