巧变一般疑问句 陈.docx

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1、巧变一般疑问句 陈巧变一般疑问句和否定句 Hello, boys and girls! 如何把一般现在时态的陈述句变为一般疑问句和否定句呢？这里教给大家一个秘诀，灵验得很呢！ 首先按照动词种类的不同将其分为两部分： 第一：含系动词be(am / is / are)或情态动词(can / could等)的一般现在时的句子。 变为一般疑问句：秘诀一调二改三问号 一调：即把句中的be(am / is / are)或can等词调到句首； 二改：句中的主语若含有I(my / we)等第一人称代词时，需将它们分别改为you(your / you)； 三问号：句末的句号改为问号。 变为否定句：秘诀在be动词

2、或情态动词(can / could等)后加not 如： I am from China. Are you from China? I am not from China. He can read this bike. Can he read this bike? He can not read this bike. 3. They are some books. Are they any books? They are not any books . 第二：含行为动词(即实义动词)的一般现在时的句子。 1）变为一般疑问句：秘诀一加二改三问号。 一加：即在句首加助动词Do(第三人称单数作主语时加

3、Does)； 二改：句首加助动词Does之后，谓语动词必须改为原形，句中的主语若含有 I(my / we)等第一人称代词时，需将它们分别改为you(your / you)； 三问号：句末的句号改为问号。 变为否定句：秘诀在主语后加dont 或 doesnt (三单) 如： Li Mei likes swimming. Does Li Mei like swimming? Li Mei doesnt like swimming. He gets up early every morning. Does he get up early every morning? He doesnt get up

4、 early every morning. We go to school every day. Do you go to school every day? We dont go to school every day. 特殊疑问句： 1.疑问词is/am/are +主语(其它成分)？ Who is she ? Where are they from? How old is the boy? 2.疑问词do /does +主语动词原形(其它成分)？ Where does she go? When do you go to school? What do you want? What does

5、 she want? 注意：1.当主语是第三人称单数时，动词要加 “S”或“es”， 变为否定句，一般疑问句时，动词要恢复原形。即“动词三单只能用于肯定句”。 2. 变为否定句，疑问句时，some一定变成any。Some只能用于肯定句 一般疑问句和否定句的变法 一、 先将句子分成三类： 1）含有am, is, are 的句子。 2）含有行为动词的句子， 3）含有情态动词的句子，如can。 (1) 如果是第一类，即含有am, is, are 的句子。只将把am, is, are 调到句首。I am 和We are 要变成are you，some变成any，my变成your，句末用问号。否定句只在

6、be后加not。如am-am not； is -isnt； are-arent。如： I am a boy. She is my mother. This is my book. These are books. There is some beef . (2)如果是第二类，即含有行为动词的句子时，要分两步看主语。 当主语不是第三人称单数时，变问句在句首加Do。变否定句在主语后加dont。即句型为： Do + 主语 + 动词原形 + 其他？ 主语 + dont+动词原形 + 其他。 例如： I have some tomatoes. I dont have any tomatoes. Do y

7、ou have any tomatoes? Yes, I do. No, I dont. We play sports every day. 当主语是第三人称单数时，变问句在句首加Does。变否定句在主语后加doesnt。即句型为： Does + 主语 + 动词原形 + 其他？ 主语 + doesnt+动词原形 + 其他。 She watches TV every day. She doesnt watch TV every day. Does she watch TV every day? . Yes, she does. No, she doesnt. My brother works a

8、t school. (3) 如果是第三类情态动词，如can 时，一般疑问句只将can提到句首，否定句将can 变成cant。some变any。(情态动词不受人称的限制) I can play basketball. I cant play basketball. Can you play basketball? Yes, I can. No, I cant. she can play basketball. 一，变一般疑问句和否定句 I often go there. You like some music. He goes to work by bus . We can swim. 二对下列

9、句子画线部分提问： 1. I get up at six oclock. 2.They go to the park on Sunday. 3.The elephants like eating fruits. 4.He gives me two pens. 5.He has lunch at school. 6.His favourite sport is basketball. 7.My brother works in Shenzhen. 三 注: has 是have 的第三人称单数形式. 即has用于一般现在时态的主语是第三人称单数形式, have用于除第三人称单数以外的所有人称. 如

10、: 1. They have a dog. 2.He has two cats. 3.I have a new bike. 4.It has four legs. 四句型转换 1.My brother works in Shenzhen. _ _ your brother _? 2.One of my classmates comes from Australia. _ _ one of your classmates_ _? 3.He does his homework every day.(否定句) He _ _ his homework every day. 4.David wants to play tennis. _ _ David _ to play? 5.She teaches English in No.8 Middle School. _ _ she _ English? 6.My parents live in Chongqing now. _ lives in Chongqing now? 7.They look very young.(一般疑问句) _ they _ very young?