one，person後面謂語是單數還是複數

one person 釋義：一個人

謂語動詞是應該與one保持一致用單數。例如：

Only one person out of twenty is a farmer. 20個人中只有一個人是農民。

One out of every three persons makes his living from industry. 每3人中就有1人靠工業維生。

①用單數的例句：

One man in five was unemployed. 每五人中有一人失業。

One family in ten owns a dishwasher. 每十個家庭就有一家擁有洗碗機。

②用複數的例句：

Nationwide， one in five adults are illiterate. 就全國範圍而言，五個成年人中有一個是文盲。

About one in every 20 people have clinical depression. 大約每20個人中有1個患有臨床抑鬱症