实义动词最主要根据时态和人称来变否定句：
如果人称不是第三人称，比如：We watch TV at home.否定：主语后加don't；如果主语是第三人称单数，如：He plays basketball after school.否定：主语后加 doesn't，动词plays变为原型 play；如果是过去时，如：I went to bed early .无论主语是谁，否定：主语后加didn't，动词went变为原型go。实义动词肯定句怎样变否定句
实义动词最主要根据时态和人称来变否定句：
如果人称弯型不是第三人称，比如：We watch TV at home.否定：主语橡裂后加don't；如果主语是第三人称单数，如：He plays basketball after school.否定：主语后加 doesn't，动词plays变为原型 play；如果是过去时，如：I went to bed early .无论主语是埋如猜谁，否定：主语后加didn't，动词went变为原型go。
英语肯定句变否定句
英语肯定句变否定句：be+not，情态动词+not，do或does+not。
1、be动词的否定式
be动词根据不同的人称和时态有不同的形式，在一般现在时中是am、指芹is、are可用作联系动词，构成否定式时，一律在其后面加否定词not。
He is reading.——He is not reading.
They are from China.——They are not from China.
2、情态动词的否定式
情态动词的否定式是在其后面蚂帆直接加not，如：
I can swim.——I can't swim.
He can dance.——He can't dance.
You should go to school at seven.——You shouldn't go to school at seven.
3、实义动词的否定句
实义动词变否定句时，要借助助动词唯物毕do、does，在一般现在时中用do或者does其句子结构为：主语+don’t或doesn’t+动词原形+其它，例如：
I like pop music.——I don't like pop music.
He likes running.——He doesn't like running.
She does her homework at home.——She doesn't do her homework at home.
如何把带有实义动词的肯定句改成否定句和 一般疑问句
举个最简清答单的世隐 He likes swimming 一般疑问句 Does he like swimming？ 回答只搜正厅需用Yes,he does/No, he doesn't 否定在助动词后加not 这句话就是He doesn't like swimming does 和do 是由主语的人称而改变 单三does 非单三do
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