a couple of +复数名词+ 复数谓语动词,就不分析了 the couple 这对夫妇 谓语动词 可以用单数,也可以用复数 这和family差不多,比如The family is very large. The couple is very nice.这对夫妻关系很好.把夫妻看成整体. 同样指个体时,用复数谓语动词. The family are having dinner. The couple are having dinner.
a couple of 后接复数名词作主语,谓语一般用复数形式:A couple of days have passed since we parted. 摘自《星火英语语法全解》P290。 The young couple seem/seems to be happy. (强调 个体 时, 有时视为复数) 摘自外研社英汉多功能词典。