在英语中,do和does是非常常见的动词变形形式。虽然它们是相似的,但它们的使用方式是有区别的。下面我们就来了解一下什么时候用do,什么时候用does。
当主语是第一人称单数(I), 第二人称单数(you), 以及第三人称复数(they)时,用do。它们的共同点就是都没有单数的-s变化。例如:
I do my homework every day.
You do your homework every day.
They do their homework every day.
当主语是第三人称单数(he, she, it)时,则用does。he、she、it都有单数的-s变化。例如:
He does his homework every day.
She does her homework every day.
It does its homework every day.
需要注意的是,助动词do的否定形式是don't,does的否定形式是doesn't。例如:
I don't like ice cream.
He doesn't like ice cream.
总之,记得根据主语的不同形式,选择正确的动词变形形式do或does,以形成具有正确语法性的句子。
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