Good food and exercise ______ （help）me to study better.正确答案应

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Good food and exercise ______ （help）me to study better.正确答案应是help,但为什么不是helps?food和exercise不都是不可数么?

此题考查主谓一致
首先找到本句的主语是Good food and exercise,虽然food和exercise都是不可数名词,但是食物和锻炼是两种东西,因此谓语还是用复数形式,help而不是单数的helps.
再问：那就是说，只要是and连接，就算是不可数也是要当复数来看是吗？
再答：根据句意判断，只要主语包含的不同的两样东西就要用复数~

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