Running and swimming ----- good for my health.两个并列的动名词做主语时,谓语动词用单数还是复数
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Running and swimming ----- good for my health.两个并列的动名词做主语时,谓语动词用单数还是复数
Running and swimming ----- good for my health.
两个并列的动名词做主语时,谓语动词用单数还是复数
Running and swimming ----- good for my health.两个并列的动名词做主语时,谓语动词用单数还是复数
are
主要是看有没有把这两者当成一个整体
如
getting up early and going to bed early is good for our ehalth
早睡早起 联系性比较大 就看成一个整体
are
Running and swimming is good for my health.
我曾经回答过这个问题，转贴过来。
当两个单形名词表示一种事物或单一概念时，用单形动词。如：
Bread and milk is wholesome food.
面包加牛奶是益于健康的食品。（bread and milk已经成为一种不可分割的整体，故用单形动词is。但如说Brea...
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Running and swimming is good for my health.
我曾经回答过这个问题，转贴过来。
当两个单形名词表示一种事物或单一概念时，用单形动词。如：
Bread and milk is wholesome food.
面包加牛奶是益于健康的食品。（bread and milk已经成为一种不可分割的整体，故用单形动词is。但如说Bread and milk have gone up in price（面包和牛奶涨价了），则须用复形动词have gone up,因为bread and milk在这里是两样单独的食物）
Trial and error is the source of knowledge.
反复试验是知识的源泉。（trial and error是单一概念）
The ebb and flow of tides is now understood.
潮水的涨落现在已经为人所了解。（一种概念）
The wheel and axle was out of repair.
差动滑车坏了。（the wheel and axle被看作是一整体）
The tumult and the shouting dies.
喧闹和叫嚷消失了。（同一范畴）
此句running and swimming可以看作是一个整体。
有一个类似的句子，供你参考：
Online learning is normally sequential and requires commitment on the students' part. Keeping up with the face-to-face class and completing all work on time is vital. (老版新视野大学英语读写教程1, P16，外语教学与研究出版社)
参考资料：薄冰英语语法高阶1
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