she has a new car 换成疑问句为什么是does she have a new car?这里为什么用HAVE不用has she has a toy car改为一般疑问句

she's got a new car\u6539\u4e3a\u4e00\u822c\u7591\u95ee\u53e5

\u3000\u3000\u822c\u7591\u95ee\u53e5\uff1aDid he buy a new car \u3000\u3000\u7279\u6b8a\u7591\u95ee\u53e5\uff1aWhat kind ofnew car did he buy \u3000\u3000\u5426\u5b9a\u53e5\uff1aHe didn't buy a new car

do she have a toy car\uff1f

She has a new car. （一般现在时）
-----Does she have a new car? （一般现在时的，一般疑问句）
此处does为助动词，变成一般疑问句时，助动词提到主语前，其后的谓语动词用“原形”；此处因为has/have既是实义动词，又是助动词；
如果将该题稍作改变，你就会明白：
She buys a new car.
变成一般疑问句：Does she buy a new car?
She has had a new car. 她已经拥有了一辆新车。 (现在完成时)
-----Has she had a new car? （现在完成时的一般疑问句）

Does she have a new car?

因为does是助动词，后面要接动词原型

因为she 是第三人称，所以疑问句的助动词要用does来提问，既然已经用does来表示第三人称了，加之does后面要用动词原型，所以在这里要用have 而不是用has了，这是在英语里的基本的用法，现在学英语最好是弄懂语法，以后才不会吃力，祝你学习进步……

does -助动词 已经用的单数 实义动词就用原形

在陈述句中因为she是第三人称，所以用单数。但是疑问句中，是把相应格式的助动词（这里是单数does）提前做疑问词，原来的第三人称单数已经有表示了，动词就恢复原型了。

因为前面有Does 后面必须复原

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