文档介绍：英语基本句型
陈述句改否定句
陈述句变否定句的规则如下:
(1) 句中有be动词的,直接在be动词后面加not.
例如,She is my sister.
改为,she is not my sister.
(2) 句中有情态动词的,直接在情态动词后面加not
例如,You e here tomorrow .
改为,you may e here tomorrow.
(3) 句中谓语动词是实意动词,没有be动词am is are,也没有情态动词can may must的,在实意动词前面加don’t或doesn’t,,当主语是第三人称单数时,加doesn’。
例如,She studies English at school .
改为,she does not study English at school.
陈述句改疑问句
陈述句变疑问句的规则如下:
(1) 句中有be动词的,把be动词提到句首。
例如,I  am a pupil.       
改为,Am  I  a pupil?
(2) 句中有情态动词的,把情态动词提到句首。(must, may, can…)
例如,I can clean the window.
改为,can you clean the window.
(3)句中谓语动词是实意动词,没有be动词am is are,也没有情态动词can may must的,在句首前面加do或does,当主语是第三人称单数时,
例如,He likes cows.  
改为,Does he like cows?
肯定回答和否定回答
Are you boys?    
Yes,we are(No,we aren't)
Is she a nurse?  
Yes,she is.(No,she isn't)
Does he like cows?
Yes,he does.(No,he doesn't)
Do we dance after school? 
Yes ,we do.(No,we don't)
特殊疑问句
特殊疑问句:以疑问代词或疑问副词开头,提出疑问的句子。  它的基本结构是:特殊疑问词+一般疑问句语序。但是如果疑问词在句子中作主语或作主语的定语,就用特殊疑问词+陈述句语序。常用的疑问词有:what, who(whom), whose,which,when,where,how,why等,回答时针对问句中的代词和副词来回答,不用yes或no来回答。