主谓宾和主系表的句子类型,在一般现在时的否定和疑问句中,用法上有什么区别？

Question

如题所述

Answer 1

一般现在时主谓宾的句子在变否定句和疑问句时需要加助动词do/does，主语是第三人称单数时谓语动词恢复原形。如：
She watches TV every evening.
否定句：She doesn't watch TV every evening.
一般疑问句：Does she watch TV every evening?
They watch TV every evening.
否定句: They don't watch TV every evening.
一般疑问句： Do they watt TV every evening?

主系表的句子当系动词是be动词时，变否定句时在be后加not，变一般疑问句时把be提前。如:
She is a clever girl.
否定句： She isn't a clever girl.
一般疑问句：Is she a clever girl？
当系动词是感官动词等实义动词时变法和主谓宾方法一样。