Do和Does:回答问题
使用 do 和 does 回答以 yes 或 no 开头的疑问句。

Do 用于回答以第一人称单数、第二人称单数或复数开始的疑问句。例如:
> Do I look okay?
> Yes, you do.
> Do you like this song?
> Yes, we do.
Does 用于回答以第三人称单数开始的疑问句。例如:
> Does she sing?
> Yes, she does.
Do和Does:动词用法
在疑问句、否定句和强调句中, do 和 does 可以用作 助动词 。
Do 用于第一人称单数、第二人称单数或复数的疑问句和否定句。例如:
> Do you know where I can buy stamps?
> I don't know.
Does 用于第三人称单数的疑问句和否定句。例如:
> Does he go to school every day?
> He doesn't.
Do和Does:强调用法
Do 和 does 还可以用来强调动词。
Do 用于否定句和强调陈述句。例如:
> I don't like this movie.
> I do like this movie!
Does 用于疑问句和强调陈述句。例如:
> Does she really think that?
> She does think that!
其他用法:do和does
除上述规则外, do 和 does 还有其他用法:
Do 可以用作模态动词,表示必要性或许可。例如:
> You do need to eat healthier.
Do 可以用作替代动词,表示重复或习惯性行为。例如:
> I do homework every night.
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