求have,has,had的区别?

来源：学生作业帮助网编辑：作业帮时间：2024/04/27 16:23:19

求have,has,had的区别?
求have,has,had的区别?

求have,has,had的区别?
在小学英语教材中出现了have与has这两个单词,学生对它们很难区分,使用时经常出现错误.
have与has都作“有”的意思讲,但二者的用法是有区别的.
在陈述句中,当主语是单数第三人称（he、she、it）时,句子的谓语是“有”时,用has；当主语是其他人称（I、you、we、they）时,句子的谓语是“有”时,用have.
例句：
I \ You have an apple .
We\They have some apples .
He\She has a pen .
但是,在疑问句中,当主语是就单数第三人称提问时用has,其它情况的“有”一律用have..
例句：
Do you have a book ?
What does a cat have ?
What has a pouch?

have是动词原形
has是当主语是第三人称单数时，have进行的变形，也就是单三形式
had是当谓语动词发生在过去时have的变形，也就是have的过去式

have 是原级,通常翻译为"有"has是第三人称单数, had为过去式

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