have可數(shù)嗎

不可數(shù)名詞用has，可數(shù)名詞單數(shù)用has，復(fù)數(shù)用have。
例句：
Prices have risen alarmingly.
價格漲得嚇人。
Building costs have nosedived.
建筑費用猛跌下來。