Either you or I am to go 和Neither he or I have done it .为什么一句中有am ,另一句中却用have

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Either you or I am to go 和Neither he or I have done it .为什么一句中有am ,另一句中却用have
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Either you or I am to go 和Neither he or I have done it .为什么一句中有am ,另一句中却用have
Either you or I am to go 和Neither he or I have done it .
为什么一句中有am ,另一句中却用have

Either you or I am to go 和Neither he or I have done it .为什么一句中有am ,另一句中却用have
either ...or...或者……或者……/ 不是……就是……
neither ...nor ...既不……也不……
not only ...but also...不但……而且……
以上三个的用法是一样的,连接并列成分,作主语是谓语动词与后面的主语保持一致,即‘就近原则’
回到你的题目,他们的意思不相同
1 将要做某事（ 固定用法 be to do sth )“ 不是你就是我就要走了”
2已经做了某事（现在完成时have /has +动词过去分词）“我和他都没做”

就近原则，第一句就近的主语为I，故用AM，BE GO DO是计划作某事的意思
第二句就近主语依旧为I，是完成时态，故用HAVE DONE STH

either or和neither nor结构的动词形式遵循就近原则
Either you or I am to go 靠近I就用am
Neither he or I have done it 靠近i就用have
be to表示将要，计划做某事
have done表示已经做了什么
两者时态不同而已
祝你学习进步O(∩_∩)O哈！
如果对你有所...

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either or和neither nor结构的动词形式遵循就近原则
Either you or I am to go 靠近I就用am
Neither he or I have done it 靠近i就用have
be to表示将要，计划做某事
have done表示已经做了什么
两者时态不同而已
祝你学习进步O(∩_∩)O哈！
如果对你有所帮助，还望采纳O(∩_∩)O哈！
如还有不懂的，还可以继续追问哦\(^o^)/~

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