isn't doesn't don't的区别最好有例子啊.那isn't和doesn't有什么区别啊？

来源：学生作业帮助网编辑：作业帮时间：2024/05/05 00:28:08

isn't doesn't don't的区别最好有例子啊.那isn't和doesn't有什么区别啊？
isn't doesn't don't的区别
最好有例子啊.
那isn't和doesn't有什么区别啊？

isn't doesn't don't的区别最好有例子啊.那isn't和doesn't有什么区别啊？
isn't 主语为第三人称单数,时态为一般现在时,后不加动词,加名词,形容词等．doesn't主语也为第三人称单数,时态也为一般现在时,但后加动词原型．
don't 主语为第一二人称或复数,时态也为一般现在时,后也加动词原型．

don't doesn't 是助动词do的否定形式，意为不能做什么。
例：I _don't_ know what you say.（我听不懂你在说什么。）
doesn't是第三人称单数。例：He dosen't see.（他不能看。）
而isn't 是be动词is的否定形式。It isn't necessery.（这不重要。）

isn't是现在进行体表“是，有” 用于第三人称单数
She isn't a doctor
She isn't playing basketball
There isn't any sheep
doesn't是一般现在时用于第三人称单数
He doesn't good at dance
don't是一般现在时用于第一人称和第二人称 ...

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isn't是现在进行体表“是，有” 用于第三人称单数
She isn't a doctor
She isn't playing basketball
There isn't any sheep
doesn't是一般现在时用于第三人称单数
He doesn't good at dance
don't是一般现在时用于第一人称和第二人称以及复数情况
I don't kown
You don't understand me
They don't like him

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