Either you or your teacher is mistaken.为什么这里用is而不是are\have\has?

Either you or your teacher is mistaken.为什么这里用is而不是are\have\has?
Either you or your teacher is mistaken.
为什么这里用is而不是are\have\has?

Either you or your teacher is mistaken.为什么这里用is而不是are\have\has?
Either you or your teacher is mistaken.意思是 “不是你错了,就是你的老师错了.”
either...or...意为“不是...就是”,“要么...要么...”,连接两个主语时,谓语的数由最靠近谓语的主语来决定(就近原则）,此句中靠近谓语的主语是your teacher为第三人称单数,所以谓语动词用单数is.

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