欢迎来到天天文库
浏览记录
ID:10420093
大小:59.00 KB
页数:14页
时间:2018-07-06
《英语肯定句变否定句所有规则21(2)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、一、简单句中含有be动词、情态动词和助动词时,变否定句时需在be动词、情态动词和助动词后加not。1.(am,is,are是be动词)如:Iamateacher.→Iamnotateacher.Thisisapen.→Thisisnotapen.或Thisisn’tapen.(isnot=isn’t)Youareaboy.→Youarenotaboy.(arenot=aren’t)2.(can是情态动词)Hecanhelpme.→Hecannothelpme.或Hecan’thelpme.(cannot=can’t)3.当主语是第一人称、第二人称和第三人称复数时用助动词d
2、o,变否定时,在do后面加not如:IlikeEnglish.IdonotlikeEnglish.或Idon’tlikeEnglish.Theygotoschooltogether.→Theydonot(don’t)gotoschooltogether.4.当主语是第三人称单数时用does,变否定时,在does后面加not,如:Thelittlegirlwantstogothere.→Thelittlegirldoesnot(doesn't)wanttogothere.2.简单句中谓语动词为行为动词时,要根据时态选用do的相应形式,把肯定句变为否定句。如:Thelittl
3、egirlwantstogothere.→Thelittlegirldoesn'twanttogothere.Hedidhisworkyesterday.→Hedidn'tdohisworkyesterday.3.祈使句变否定句时,一般在句首加Don't,但Letus或Let's开头的祈使句在Letus或Let's后加not也可。如:Putthemoverthere.→Don'tputthemoverthere.Letusgohome.→Letusnotgohome.或Don’tletusgohome.4.主从复合句中,主句是Ithink,Ibelieve等结构,变否
4、定句时,形式上否定主句,实际上否定从句。如:Idon'tthinkchickenscanswim.我认为鸡不会游泳。5.“hadbetter+动词原形”,变否定句时为“hadbetternot+动词原形”。如:You'dbettergotoschool.→You'dbetternotgotoschool.6.动词不定式变否定式时,常在不定式to前加not。如:Theteachertellsmetodoit.→Theteachertellsmenottodoit.7.使役动词和感官动词(make,let,hear,see,watch等)后接省略to的不定式,此种不定式变
5、否定句时只需在省略to的动词原形前加not。如:Isawherwork.→Isawhernotwork.8.特殊形式的否定句,有以下几种:(1)肯定句含有every-的合成词时,变否定句时改为no-。如:Everythingisready.→Nothingisready.(2)肯定句中含有always,usually和ever时,变否定句时改为never。如:Heisalwayslateforschool.→Heisneverlateforschool.(3)肯定句含有many,much时,变否定句时分别改为few,little。如:Manystudentsknow
6、him.→Fewstudentsknowhim.(4)肯定句中含有still时,变否定句时应改为nolonger。如:Tomisstillinbed.→Tomisnolongerinbed.(5)肯定句含有both,both...and,all时,变否定句时应改为never,neither...nor,none。如:Bothofusarestudents.→Neitherofusisastudent.(6)肯定句含有nearly,almost时,变否定句时应改为hardly。如:Lilynearlyknowshim.→Lilyhardlyknowshim.(7)肯
7、定句含有“形容词+enough”时,变为否定句时应改为“too+形容词的反义词”。如:Heisshortenoughtoreachit.Heistootalltoreachit. (1)谓语动词是be,have(有)或谓语含有助动词、情态动词时,直接在这些词后加上否定词not。如:Shecanswim.Shecan'tswim.(2)谓语动词是行为动词时,要在该动词前加上do/does/didnot,该词恢复原形。如:Hegetsupearly.Hedoesn'tgetupearly.(3)既要否定谓语动词,又要变换句
此文档下载收益归作者所有