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1、1陈述句含义：用于陈述事实和观点的句子。陈述句包括肯定结构和否定结构。This is a desk.（肯定结构）He can sing and dance.（肯定结构）He doesnt have a computer.（否定结构）There arent any pictures.（否定结构）肯定句变否定句：1. be动词的否定式be:am ,is ,are,was were构成否定式时，一律在后面加否定词 notHe is reading. He is not reading.They are from China. They are not from China.2. 情态动词的否定式情态
2、动词：can, could, must , may, might, will, would，shall,should , need,构成否定式时，一律在情态动词后面加否定词 notI can swim. I can not swim.You should arrive here on time.You should not arrive here on time.3. 实意动词的否定句实意动词：即行为动词, 表示动作的动词。它分为及物动词和不及物动词两种（及物动词是指后面要求有宾语的动词；不及物动词指后面不需要跟宾语的动词）构成否定式时，要借助助动词 do, does, did，在一般现在时中
3、用 do或者does，在一般过去时中用 did。结构为：主语+dontdoesntdidnt+动词原形+其它I like pop music. I dont like pop music.She often swims. She doesnt often swim.He handed in his homework.He didnt hand in his homework.一般疑问句含义：一般疑问句是疑问句的一种。它是只用 yes（是）或 no（否）来回答的句子。其结构是：系动词 be/助动词/情态动词+主语+其他成分1) 谓语 动词是 be动词规律：He is a student. Is
4、he a student?2She is swimming. Is she swimming?2) 谓语中含有助动词 have/has/had (通常是在现在完成时和过去完成时中：have / has / had + 过去分词)规律：Tom has finished his homework. Has Tom finished his homework?I have eaten breakfast. Have you eaten breakfast?3) 谓语动词中含有情态动词时。规律：He can swim. Can he swim?I should go to school. Should
5、 I go to school?4) 谓语动词是行为动词，必须在句首加上助动词。加上这些助动词后，句子中谓语动词必须用原形。规律：Tom built a science lab himself lab when he is 20 years old.Did Tom build a science lab himself lab when he is 20 years old？She likes drinking milk. Does she drink milk?They often swim. Do they ofen swim.注意 ：1. 把肯定句改成一般疑问句时，要注意句中是否有alr
6、eady,some,something,somebody等词，如果有，就要进行改变。already,some,something,somebody等分别改成 yet,any,anything,anyoneShe has already finished her work. Has she finished her work yet?2. 注意人称的变化。 My mother is a teacher.Is your mother a teacher?3. 以下问句固定的回答：Is this/that/a/an+物-yes,it is./No,it isnt.Are they /those/th
7、ese?-Yes,they are./No,they arent.特殊疑问句含义：以疑问代词或疑问副词开头，提出疑问的句子。 基本结构：特殊疑问词+一般疑问句注意：A疑问词的选择：1.疑问代词who谁，whom 谁，whose 谁的，which 哪些(个)，what 什么2. 疑问副词（作状语）3when何时，where 何地，why 为什么，how 如何，how much 多少(不可数) ，how many 多少(可数），how long 多久，how old 多大年纪，how far 多远。1) 问“谁”用 who或 whomLeilei is a doctor. Who is a doc
8、tor?(对主语提示用 who,对宾语提问用 who,whom均可)2) 问“谁的”用 whoseThis is his book. Whose book is this?3) 问“哪个”用 which,whatI like this one among thesree three.Which do you like among these three?I like English best. What do you like best?4) 问“时间”用 when或 what timeI go there in the morning ? When do you go thereIt is
9、4 oclock. What time is it?(when既可以对时间点提问，也可对年、月、日等时间提问;what time 通常只对时间点提问)5) 问“地点”用 where The ball is under the bed. Where is the ball?6) 问“原因”用 WhyHe did not come because he was ill. Why did not he come?7) 问“方式”或“身体状况”用 howHe did it in that way. How did he do it.I am fine. How are you?B疑问句的语序：1 对句
10、子的主语提问，其语序是疑问词+谓语+其他成分She is their teacher. Who is their teacher？2 对句子主语的定语提问，其语序是疑问词+主语+谓语+其他成分My book is over there. Whose book is over there?3 对表语、宾语或状语提问，其语序是疑问词+一般疑问句He lives in Beijing. Where does he live?4 对表语或宾语的定语提问，其语序是疑问词+表语或宾语+一般疑问句I am looking for my watch. Whose watch are you looking f
11、or?C 如何完成对划线部分提问？1. 针对划线部分找准要使用的特殊疑问词2. 把原句变成一般疑问句3. 用第一步中的特殊疑问句加第二步的一般疑问句（去掉划线部分）4My name is Mary.What为疑问词 Is your name Mary? What is your name?They are from Japan. Mary made a cake for her mother.He had learned English before he went to middle school.The sun rises in the east.They can go there by
12、bus.练习选择正确的单词填空1._ is that pretty girl? She is my sister.2._ are Jack and Tom? They are behind you.3._ do you go to school? I go to school from Monday to Friday.4._ are the apples? They are 10 yuan.6._ is your mother? She is a teacher.7._ are you going? We are going to the bakery(面包坊).8._ did Jim an
13、d Wendy travel to Beijing ? They traveled there by plane9. _is the skirt? Its red.10. _ do you go to the cinema? Twice every week.11. did you be late for school? Because I got up late.一将下列句子改成一般疑问句：1. It is a lovely dog._2. I am a doctor. _3. We are classmates. _4. I play computer games every night.
14、 _5. He likes English. _6. His father goes to work by bus. _7. I want a new toy. _8. She finished reading the books two days ago. _9. She has some story book. _10. I can dance and sing. _511 He has some brothers. _12. They have gone to Beijing. _13. She has finished her homework. _把肯定句变为否定句1. His father is an English teacher. _
