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:2024/11/17 00:40:00

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 ...

全部展开

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

收起