My favorite food is beef and hamburgers.food是可数还是不可数?

My favorite food is beef and hamburgers.这句话是对的.
food,beef 不可数,所以不加s
你的问题关键在于：英语要求【主谓一致】,即谓语部分在单复数上,看主语,跟谓语后面的词无关.
如 How much is this book?It is 10 dollars.“这本书多少钱?十美元”
单数的is 与复数的dollars 搭配,看似矛盾,其实好解释的.因为它的主语是It,单数含义,因为主谓一致的缘故,就用is