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Do和does用法解析

作者:高考题库网
来源:https://www.bjmy2z.cn/gaokao
2021-02-12 16:36
tags:

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2021年2月12日发(作者:vehicle)


助动词包括


do, does


的用法



< br>do











I,






yo u











we, they, these, those


及两个以上的人或者事物。




does


用于当主语是第三人称单数时(第三人称包括


she, he, it, this, that,


单独的


事物或者人名等)




含有实义动词的句型结构变换



一、肯定陈述句



1




当主语是


I



you


及复数时,谓语动词用原型。





Eg. I know it.



Eg.


表示例如的意思)




They have two volleyballs.




Tina and Tom like ice cream.


2.


当主语是第三人称单数时(第三人称包括


she, he, it, this, that,


单独的事物或者


人名等)


。谓语动词要变为第三人称单数形式。


P98

< br>特别要注意


have



has


Eg. She has a set of keys.






He knows my name.




Tom needs a computer game.


二、肯定陈述句变换成否定陈述句



1




当主语是


I



you


及复数时,在谓语动词前加


do not = don



t




Eg. I don



t know it.


They don



t have two volleyballs.




Tina and Tom don



t like ice cream.


2.


当主语是第三人称单数时


,


在谓语动词前加


does not = doesn



t,


谓语动词打回原




Eg. She doesn



t have a set of keys.




He doesn



t know my name.


Tom doesn



t need a computer game.


三、肯定陈述句变换成一般疑问句采用“一加二变三问号”






一加:




当主语是


I



you


及复数时,在句子开头加


do;



当主语是第三人称单数时(第三人称包括


she, he, it, this, that,


单独的事物或者


人名等)


,


在句子开头加


does;



二变:




变大小写


;



第一人称变为第二人称(


I / we


变为


you, my / our


变为


your






当主语是第


三人称单数时

< p>
,


谓语动词要打回原型。



三问号:




在句末加问号。



肯定回答;


Yes,


主语


+ do/ does.


否定回答:


No,


主语


+don



t / doesn



t . (


主语要用相应的人称代词主格


)


Eg. Do you know it?














Yes, I do. / No, I don



t .


Do they have two volleyballs?







Yes, they do. / No, they don



t .


Do Tina and Tom like ice cream?






Yes, they do.



/ No, they


don’t.



Does she have a set of keys?










Yes, she does. / No, she


doesn’


t.


Does he know your name?










Yes, he does. /No, he doesn



t.

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