英语肯定句变否定句容易错的地方

肯定句改否定句容易错的地方肯定句改否定句是句型转换中常用 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 型，但初学者往往出错，现选几例通过比较，说明其正确的改法。例1：Ithoughtshewasthere.(误)：Ithoughtshewasn'stthere.(正)：Ididn'tthinkshewasthere.例2：Ithoughthewasright.Ithoughthewasright.(误)：Ithoughthewasn'sright.(正)：Ididn'tthinkhewasright.1.通过上面两例说明一条规律：英语中,象think(认为)、believe(相信)、expect(盼望)suppase(推测)、imagine(想象)等 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 示揣测或信念的动词。后接that引导的宾语从句时、改为否定句时,按习惯把that从句中的否定式移到主句。(即：否定主句谓语，而不否定从句谓语。)例1：Hecansingthissongandthatone.(误)：Hecan'tsingthissongandthatone.(正)：Hecan'tsingthissongorthatone.例2：Hecanreadandwrite.(误)：Hecan'treadandwrite.(正)：Hecan'treadorwrite.2.说明：肯定句中的连词and在否定句中一般要用or.例1：Tomwenttoschool，too.(误)：Tomdidn'tgotoschool，too.(正)：Tomdidn'tgotoschool，either.例2:HehasbeentoBeijing,too.(正)：Hehasn'shadsupperyet.例2：Hehashadsupperalready.肯定句改否定句容易错的地方肯定句改否定句是句型转换中常用题型，但初学者往往出错，现选几例通过比较，说明其正确的改法。例1：Ithoughtshewasthere.(误)：Ithoughtshewasn'tthere.(正)：Ididn'tthinkshewasthere.例2：Ithoughthewasright.Ithoughthewasright.(误)：Ithoughthewasn'tright.(正)：Ididn'tthinkhewasright.1.通过上面两例说明一条规律：英语中,象think(认为)、believe(相信)、expect(盼望)suppase(推测)、imagine(想象)等表示揣测或信念的动词。后接that引导的宾语从句时、改为否定句时,按习惯把that从句中的否定式移到主句。(即：否定主句谓语，而不否定从句谓语。)例1：Hecansingthissongandthatone.(误)：Hecan'tsingthissongandthatone.(正)：Hecan'tsingthissongorthatone.例2：Hecanreadandwrite.(误)：Hecan'treadandwrite.(正)：Hecan'treadorwrite.2.说明：肯定句中的连词and在否定句中一般要用or.例1：Tomwenttoschool，too.(误)：Tomdidn'tgotoschool，too.(正)：Tomdidn'tgotoschool，either.例2：HehasbeentoBeijing,too.(误)：Hehasn'tbeentoBeijing,too.(正)：Hehasn'tbeentoBeijing,either.3.以上两例说明：肯定句中的too、also，在否定句中应改为either.例1：Hehashadsupperalready.(误)：Hehasn'thadsupperalready.(正)：Hehasn'thadsupperyet.4.上例说明：随着对谓语动词的否定,某些动词也要作相应的变化。例1：Hehadagoodrestjustnow.(误)：Hehadn'tagoodrestjustnow.(正)：Hedidn'thaveagoodrestjustnow.第1页肯定句改否定句容易错的地方5.上例说明：have在(开会、吃饭、休息、进行体育锻炼)这些词组中是行为动词，否定句应加助动词来完成。例1：Heusedtolivethere.(误)：Hedidn'tusedtothere.(正)：Heusednottolivethere.或Heneverusedtolivethere.6.上例说明：usedto(过去常常、习惯于…的)的否定式一般不用did构成，usedto的否定式应为usednotto或neverusedto.例1：Let'ssithere.(误)：Let'sdon'tsithere.(正)：Let'snotsithere.或Don'tlet'ssithere.例2：Let'sdoit.(正)：Let'snotdoit.或：Don'tletdoit.7.上两例说明：let后接的是不带to的不定式，变为否定式时，直接在句首加don't或在不定式后加not.例1：Youhadbettercome.(误)：Youdidn'thavebettercome.(正)：Youhadbetternotcome.8.上例说明：hadbetter相当于一个情态动词，不可分割。因此not应放在其后，wouldrather也是如此。例1.Behereearlytomorrow.(误)：Benothereearlytomorrow.(正)：Don'tbehereearlytoworrow.9.上例说明：第二人称祈使句的否定，一般在谓语动词前加Don't.例1.Isawboththeteacherandthestudents.(误)：Ididn'tseeboththeteacherandthestudents.(正)：Isawneithertheteachernorthestudents.10.上例说明：含both..and..或notonly..butalso..的否定语应用neither..nor..的形式。例1.BothTomandXiaoPingwenttoschool.(误)：BothTomandXiaoPingdidn'tgotoschool.(正)：NeitherTomnorXiaoPingwenttoschool.例2.Iknowallthesewords.(误)：Idon'tknowallthesewords.(正)：Iknownoneofthesewords.例3.Everystudentcananswerit.(误)：Everystudentcan'tanswerit.肯定句改否定句容易错的地方11.通过上面三个例句说明：一个句子里如果含有不定代词both、all、every时，改为否定句时要把这些不定代词改为相应的表示否定意义的不定代词。例1.Shealwaysfinishesherhomeworkintime.(误)：Shedoesn'talwaysfinishesherhomeworkintime.(误)：Shedoesn'talwaysfinishesherhomeworkintime.(正)：Sheneverfinishesherhomeworkintime.例2.Itoftenrainshere.(误)：Itdoesn'toftenrianhere.(正)：Itseldomrainshere.例3.Inealysaweverythings.(误)：Ididn'tnearlysaweverythings.(正)：Ihardlysawangthings.12.以上三例说明：主谓之中有一个副词的句子，英语习惯上不是在副词后面加not，而是把这个句子中的副词改为一个相应的表示否定的副词，全句就变成了否定句。各种时态肯定句变否定句口诀变成否定有规则，"是""将""有"后加not。假如没有"是""将""有"，动词前面加don't(doesn't/didn't)。be的各种形式：amisarewaswere.have(有)的各种形式：havehashad情态动词：shallcanmaymustcouldwouldshould助动词：behavedo.如果肯定句中有以上四种特殊定式动词，就直接在这些词之后加上否定词not(never,no)即可。