‘It was carelessness that causes the traffic accident’中的caus

问题描述:

‘It was carelessness that causes the traffic accident’中的cause为啥要加s
1个回答 分类:英语 2014-12-10

问题解答:

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that 指先行词 carelessness 是第三人称单数 cause 要用第三人称单数形式加s
 
 
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