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1、-一般现在时的肯定句变一般疑问句和否定句方法2014-10-24 0.27.56-第 4 页一般现在时的肯定句变一般疑问句和否定句方法一:变一般疑问句必知知识: 系动词be 动词的分类 情态动词can、would等 助动词will等(暂时不用掌握) 行为动词(run、likes、wants等)什么是第三人称单数?人称:单数复数第一人称Iwe第二人称You(你)You(你们)第三人称He、she、itThey由表格可以看出第三人称单数是He、she、it。注意单数名词作主语也看做第三人称单数。 He、she、it 单数名词。如单个的地名、人名等所以简单来说第三人称单数是 不定代词如everyth
2、ing/something 等 指示代词this/that1.变一般疑问句的思路:看谓语动词,如果谓语动词是系动词be (am/is/are)、助动词、或情态动词,则只需将它们提到主语之前。如果没有(肯定就是行为动词的原形(如run、like、)或三单(如runs、likes),则在句首加上Do或Does。谓语动词方法系动词be把be提到主语之前情态动词can、would等把情态动词提到主语之前助动词will等(暂时不用掌握)把助动词提到主语之前行为动词的原形如(run、like、)三单(runs、likes)原形句首加Do、三单加Does2具体方法当谓语是系动词be (am/is/are)、
3、助动词、或情态动词时运用一提、二改、三问号。一提,就是将系动词be (am/is/are)、助动词、或情态动词提到主语之前,下面主要讲解be动词的一般疑问句。一提:把is/are提到主语之前(注意碰到I am改为Are you,然后将讲I am后面的抄上)二改: 1.改大小写2. 改人称,就是把第一人称的主格和形容词性物主代词改为第二人称的主格和形容词性物主代词。即将Iyou,we you,my your,our your。3. 改词将some any三问号,就是把句号变成问号。I am in Class Five.Are you in Class Five? My mother is a d
4、octor.Is your mother a a doctor?He is a boy.Is he a boy? 肯回Yes,he is. 否回No,he isnt.We are students.Are you students ?总结:该系列一般疑问句句式系动词(Is、Are)+主语+表语+其他+? 情态动词+主语+动原+其他+? 助动词句式略当谓语动词为行为动词的原形(如run、like、)或三单(如runs、likes),则在句首加上Do或Does。运用一加、二改、三问号一加:就是在句首加Do/Does. 行为动词原形句首加Do、三单加Does二改: 1.改大小写2. 改人称,就是把第
5、一人称的主格和形容词性物主代词改为第二人称的主格和形容词性物主代词。将Iyou,we you,my your,our your。3. 改词 加Does时,动词三单 变 原形,碰见some any备注:Does是个照妖镜,动词见它现原形!三问号,就是将句末。变成问号。例句:We want salads. want是动原。加Do Do you want salads?肯回:Yes,I do. 否回 No, I dont.He has two big eyes. has 是三单,加Does Does he have two big eyes? 肯回:Yes,he does. 否回 No,he doe
6、snt.Our English teacher likes good students.likes是三单, 加Does .Does your English teacher like good students? 肯回:Yes,he does. 否回 No,he doesnt.二变否定句两种方法(思路):1直接加not.2.加dont、doesnt、( didnt)1直接加not. 如果谓语动词是系动词be (am/is/are)、助动词、或情态动词,找见它们,在他们后面加not。I am in Class Five I am not in Class Five。My mother is a
7、doctor. My mother is not a doctor.He is a boy. He is not a boy.We are students. We are not studentsWe can be friends. We can not be friends.2.加dont、doesnt、( didnt)。如果没有系动词be (am/is/are)、助动词、或情态动词,即为行为动词的原形(如run、like、)或三单(如runs、likes)时,则在主语之后,行为动词的原形之前加上dont (do not),在主语之后,行为动词三单之前加上doesnt(does not),
8、加doesnt时,后面的动词三单变原形。注意:变否定句时,碰到some改为any and改为or。We want salads. want是动原。加dont We dont want salads. He has two big eyes. has 是三单,加doesntHe doesnt have two big eyes.Our English teacher likes good students.likes是三单, 加doesntOur English teacher doesnt like good students.I like apples and pearsI dont like apples or pearsHe has some new friends.He doesnt have any new friends.