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
•Sheismysister
•Sheisnotmysister
•(2)句中有情态动词的,直接在情态动词后面加not•Youmaycomeheretomorrow
•Youmaynotcomeheretomorrow
•(3)句中谓语动词是实意动词,没有be动词amisare,也没有情态动词canmaymust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’t
相应的实意动词变为原型
•ShestudiesEnglishatschool
•ShedoesnotstudyEnglishatschool
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
•Heisawriter
•Isheawriter
•(2)句中有情态动词的,把情态动词提到句首
•(must,may,can,could,need,…)•Icancleanthewindow
•Canyoucleanthewindow
•(3)句中谓语动词是实意动词,没有be动词amisare,也没有情态动词canmaymust的,在句首前面加do或does,当主语是第三人称单数时,加does
相应的实意动词变为原型•Helikescows
•Doeshelikecows
肯定回答和否定回答•Areyouboys
•Yes,weare(No,wearen't)•Issheanurse
•Yes,sheis
(No,sheisn't)•Doeshelikecows
•Yes,hedoes
(No,hedoesn't)•Dowedanceafterschool
•Yes,wedo
(No,wedon't)•Heismybrother
•Heisnotmybr