句子Potatoes ___ my favourite food .用哪个?为什么? A . is B . are

B 主谓一致 Potatoes是Potato的复数形式

Potatoes _(B) are__ my favourite food .
potato = 单数
potatoes = 复数
例句:
(1)First introduced outside the Andes region four centuries ago, today potatoes become an integral part of much of the world's cuisine and are the world's fourth-largest food crop.
(2) The potato a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family.
(3) Introduced to Europe by Spain in 1536, the potato subsequently conveyed by European mariners to territories and ports throughout the world.
(4) Nearly a third of the world's potatoes harvested in China and India.

Potatoes are my favourite food.
翻译：土豆是我最喜欢的食物。
解释：根据主谓一致原则，主语Potatoes是复数，故谓语动词用are。

B

选A 这里的Potatoes是作为整体看的,视为一个“种类”,所以是单数形式,选择is

选填B 原因：因为句子的主语potatoes为复数，所以be动词要用复数形式are。

复数，选择are。『Seriously,MortalShen』