we don't have the same looks ,but we are good friends.为什么不用aren't 而要用don't

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we don't have the same looks ,but we are good friends.为什么不用aren't 而要用don't

we don't have the same looks ,but we are good friends.为什么不用aren't 而要用don't
we don't have the same looks ,but we are good friends.为什么不用aren't 而要用don't

we don't have the same looks ,but we are good friends.为什么不用aren't 而要用don't
aren't 为be动词的否定式,译为“不是”
don't 是助动词 do 的否定式

do 是助动词，are 是系动词

are 表示“是”
aren't 表示“。不是”
We have the same looks. 我们有同样的长相。（我们长得很像。）
We don't have the same looks. 我们没有相同的长相。（我们长得不像。)do，does和don't都是助动词（协助主要动词完成各种形式，例如第三人称单数，否定等），have的否定形式，就需要借助助动词don't 来...

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are 表示“是”
aren't 表示“。不是”
We have the same looks. 我们有同样的长相。（我们长得很像。）
We don't have the same looks. 我们没有相同的长相。（我们长得不像。)do，does和don't都是助动词（协助主要动词完成各种形式，例如第三人称单数，否定等），have的否定形式，就需要借助助动词don't 来帮其完成否定。 所以don't have是have的否定形式，have表示 “有” ，而don't have 表示 “没有”。
楼主必须弄清楚：助动词和系动词是不一样的，am, is, are就是系动词（也叫做be动词）。意思是“是”；
而助动词是协助主要动词变形的作用（don't是助动词，没有实意，表否定；这句话中have才是有实意的主要动词，意思是“有”）。
简单点说，可以把 don't have 看成是一个词，意思是“没有” 翻译过来是 我们 没有 同样的长相。
而如果用we aren't have the same looks. 翻译过来就是， 我们 不是 有 同样的长相。 这样就很奇怪了。。。这是最基本的句子了。

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