michael doesn't have a long pencil.为啥不用has 而要用have?

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michael doesn't have a long pencil.为啥不用has 而要用have?

michael doesn't have a long pencil.为啥不用has 而要用have?
michael doesn't have a long pencil.为啥不用has 而要用have?

michael doesn't have a long pencil.为啥不用has 而要用have?
doesn't 已经是单数第三人称 即does not,后面跟动词原形

前面的does't已经表明是单数

因为,Michael虽然是第三人称单数,但是,他后面跟了一个助动词,助动词后面动词要用原型,所以,不用has(第三人称单数形式),而用have(动词原形)。