1、单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,本幻灯片资料仅供参考，不能作为科学依据，如有不当之处，请参考专业资料。,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,本幻灯片资料仅供参考，不能作为科学依据，如有不当之处，请参考专业资料。,小学英语句型转换,必定句变否定句,第1页,一、概念：,什么是必定句和否定句？,必定形式必定句,否定形式否定句,陈说句,陈说句：说明一件事情、一个想法，提出一个观点或表示自己心情句子。特点是：句末都是句号，用降调读！,第2页,必定句变否定句方法,1.,含,“be,动词和情态动词,”
2、型,，直接在,be,动词或情态动词后加,not,其它,照抄不变,。,be,动词包含：,am,is,are,was,were.,常见情态动词有：,can,could,would,will,may,等等。,例句：,I am a student.,I,am not,a student.,He is a boy.,He,is not/isnt,a boy.,I can speak English.,I,can not/cant,speak English.,第3页,必定句变否定句方法,注意缩写：,is not=,isnt,are not=,arent,was not=,wasnt,were not=
3、werent,am not,没有缩写，不过,I am=,Im,can not=,cant,would not=,wouldnt,could not=,couldnt,will not=,wont,第4页,必定句变否定句方法,2.,含,“,实意动词,”,型,，转换否定句时，记住五个字,“,一加一还原,”,标准。,“,一加,”,即在实意动词前加助动词否定,dont,doesnt,或,didnt,。,“,一还原,”,即把句中实意动词变回原形。,注意：在,普通现在时,中，当主语是第一、二人称或复数时，加,dont,来否定；当主语是第三人称或单数时，加,doesnt,来否定；,在,普通过去时,中，一律
4、用,didnt,来否定。,例句：,I like apples.,I,dont,like,apples.,He likes apples.,He,doesnt like,apples.,She worked last night.,She,didnt,work,last night.,第5页,必定句变否定句方法,要注意特殊情况,：,碰到,some,变,any,;,碰到,too/also,变,either,;,碰到,and,变,or,;,碰到,always,变,never,。,例句,:1.There are,some,boys in the classroom.,There,arent,any,b
5、oys in the classroom.,2.The girl can sing,and,dance.,The girl,cant,sing,or,dance.,第6页,相关练习：,1.Mike would like some chicken.,Mike_like _ chicken.,2.,Heoftengoestobedatten.,He often _ _ to bed at ten.,3.Mary is a teacher,too.,Mary _ a teacher,_.,4.They went to Shanghai yesterday.,They _ _to Shanghai yesterday.,wouldnt,any,doesnt,isnt,either,didnt,go,go,肯,定句,变否定句,第7页,Thank you,第8页,
浙ICP备2021020529号-1 | 浙B2-20240490 
