1、更多资料添加微信号：DEM2008 淘宝搜索店铺：优尖升教育 网址：八年级下学期期末重难知识点串讲+精练专题04 句型转换及专练（一）变否定句1. be动词、助动词和情态动词后加_ 动词变为_形。 My sister Jane does cleaning on weekends. My sister Jane _ _ cleaning on weekends. The twins were happy to see their uncle. The twins _ _ to see their uncle. The doctor could help that man. The doctor
2、_ _ that man.2. 如果肯定句中含有这些词，就要发生改变。 some - _ and - _ a lot oflots of - _ already - _ too/ also - _ both and - _ everything/ everyone/ everybody - _/ _/ _ always - _ Cindy took some photos in the mountains. Cindy _ take _ photos in the mountains. She could dance and sing when she was five years old.
3、She _ dance _ sing when she was five years old. I have already finished my homework. I _ finished my homework _.3. 否定转移的词有：think, _ I think I can pass the exam. I _ think I _ pass the exam.4. 一些特殊结构，变否定时，在动词（或词组）后直接加_。 My mother told me to watch TV last night. My mother told me _ _ watch TV last nig
4、ht. 这样的词还有：_【专练】1Both Lucy and Lily are independent. (改为否定句)_ Lucy nor Lily _ independent.【答案】 Neither is【详解】句意：露西和莉莉都很独立。both.and.“两者都”，否定为neither.nor.“两者都不”，所以空一填Neither；neither.nor.连接并列主语时遵循“就近原则”，谓语的数与“Lily”保持一致，句子是 主系表结构，时态为一般现在时，空二用be动词is。故填Neither；is。2Will he look after his brother?（改为被动句）_ h
5、is brother _ _ _ by him?【答案】 Will be looked after【详解】句意：他会照顾他的兄弟吗？时态是一般将来时，被动语态是will be done。故填Will；be；looked；after。3Jim works as hard as you.(改为否定句) Jim _ work _ hard as you.【答案】 doesnt as#so【详解】句意：吉姆和你一样努力。句子含有实义动词“works”，变否定句时可借助助动词doesnt；as.as“和某人一样”，改为否定句时，第一个as也可用so，即not so.as，表示“不如”。故填doesnt；
6、as/so。4Mary has been to museum many times.(改为否定句)Mary _ _ to museum many times.【答案】 hasnt been【详解】句意：玛丽去过博物馆很多次。句子是现在完成时，其否定句构成为：主语+hasnt/havent+过去分词+其他。故hasnt；been。5Youd better go to see your friend now.（改为否定句）You had _ _ go to se your friend now.【答案】better not【详解】句意：你最好现在去看你的朋友。考查否定句。原句中的“Youd bet
7、ter go”使用的是短语had better do sth.表示“最好做某事”，其否定结构为had better not do sth.。故填better not。6Lily put on a hat this morning.（否定句）Lily _ _ on a hat this morning.【答案】 didnt put【详解】本题考查肯定句和否定句的变化，根据题意可知是一般过去时态，其否定形式要借助did+not+动词的原形。故填didnt；put。7He has already read the book. (改为否定句)He _ read the book _.【答案】 hasn
8、t yet【详解】句意：他已经读完了那本书。考查否定句的结构。has作为助动词，其否定形式为has not，横线处只有一空，用其缩略形式hasnt。already在现在完成时的否定句中，要改为yet。故填hasnt；yet。8Both Mary and Linda have been to Paris. (改为否定句) _ Mary _ Linda has been to Paris.【答案】 Neither nor【详解】句意：Mary和Linda都去过巴黎。both. and表示“两者都”，否定是neither .nor表示“既不也不”，故填Neither；nor。9Hes already
9、 finished his work. (改为否定句)He _ finished his work _.【答案】 hasnt yet【详解】句意：他已经完成了他的工作。根据“already finished”可知，“Hes”的全称是“He has”，否定是“He hasnt”，肯定句中“already”在否定句中改为“yet”。故填hasnt；yet。10I think she should be allowed to drive.（改为否定句）I _think she _be allowed to drive.【答案】 dont should【详解】句意：我觉得她应该被允许开车。原句是含有t
10、hink的主从复合句，且主语是第一人称I，否定要前移，借助助动词dont构成否定句，故填dont；should。11Could you please open the door?(改为否定句) Could you please _ _ the door?【答案】 not open【详解】句意：可以请你开一下门吗？题目要求改为否定句，原句句型为“Could you please do sth.”，否定形式为“Could you please not do sth.”，此处为“not do”，open 打开，动词原形。故填not open。12All of us have been to Moun
11、t Tai. (改为否定句)_ of us _ been to Mount Tai.【答案】 None has#have【详解】句意：我们所有人都去过泰山。原句“All of us” 表达“我们所有人都”。否定表达“我们所有人都不”用“none of us”的结构。“none of+可数名词的复数形式”的结构如果是表示所有人的状态，谓语动词用复数，如果是表示每个人的状态，谓语动词用单数。谓语动词用“has”或“have”。故填None；has/have。13Sandywastalkingtoherfriends. (改为否定句)Sandy _ _ toherfriends.【答案】 wasnt
12、 talking【详解】本句的时态为过去进行时，其否定形式是在be动词后面接not，was not可缩写为wasnt。故答案为(1). wasnt(2). talking。14Shes returned from the USA(改成否定句)She _ _ from the USA【答案】 hasnt returned【详解】句意：她从美国回来了。原句为现在完成时的肯定句，shes=she has，否定句时态不变，需将助动词has变为否定形式hasnt，后面接过去分词returned。故填hasnt；returned。（二）变一般疑问句，作肯否回答把be动词、助动词、情态动词置于句_，动词变为
13、_形。否定回答注意要缩写。 I used to be afraid of dark. _ you _ to be afraid of dark? The rock bands already started playing. _ the rock band started playing _? He was reading in the library when the rainstorm came. _ he _ in the library when the rainstorm came. There will be more cars in the future. _ _ be more
14、 cars in the future? Yes, _ _. No, _ _【专练】1I was playing computer games when Father got home.（改为一般疑问句）_ _ _ computer games when Father got home?【答案】 Were you playing【详解】句意：当爸爸回家时我正在玩电脑游戏。根据题意是变成一般疑问句，此处是when引导的时间状语从句，主句是过去进行时，was doing的形式，变成一般疑问句变主句为一般疑问句，直接把be动词提前，主语是I变成you，was变成were，play computer
15、games“玩电脑游戏”，此处用动词play的现在分词playing，故填Were you playing。2He had dinner at a restaurant yesterday.（改为一般疑问句）_he _dinner at a restaurant yesterday?【答案】 Did have【详解】句意：他昨天在一家餐馆吃晚饭。一般疑问句需要助动词提前；根据“had dinner”判断是一般过去时态，助动词是did;主语he后接实义动词have。句首首字母d需要大写。故答案为Did和have。3The old man has realized that he had too
16、much unhealthy food.(改为一般疑问句）_ the old man _ that he had too much unhealthy food?【答案】 Has realized【详解】句意：这个老人已经意识到他吃了太多不健康的食物。本句是一个现在完成时态的句子，变一般疑问句时，只需将原句中的“has”提前，放于句首注意首字母大写。故填Has；realized。4I have had him for three months. (改为一般疑问句)_ you _ him for three months?【答案】 Have had【详解】句意：我已经养了他三个月了。根据“hav
17、e had”可知，“have”是助动词，因此改为一般疑问句时，助动词“have”提到句首，首字母大写；其余内容照抄。故填Have；had。5I have already cleaned the room. （改为一般疑问句）_ you cleaned the room _ ?【答案】 Have yet【详解】句意：我已经打扫了房间。原句中have是助动词，变为一般疑问句，将助动词have提到句首，且首字母要大写；already用于肯定句，疑问句改为yet，放于句尾，故填Have；yet。6Tony has seen the film. (改为一般疑问句，并作否定回答)_ Tony _ the
18、film?No, he _.【答案】 Has seen hasnt【详解】句意：托尼已经看过这部电影了。原句是一个含有现在完成时的陈述句，改为一般疑问句时，将助动词has提至句首即可，谓语动词不变。其否定回答为：No, 主语+hasnt。故填Has；seen；hasnt。7He put some yogurt in the blender.（改为一般疑问句）_ he put _ yogurt in the blender?【答案】 Did any【详解】句意：他在搅拌机里放了些酸奶。根据题意是变成一般疑问句，主语是he，谓语动词是put，说明此句是一般过去时态，变成一般疑问句，要借助助动词di
19、d，其结构是Did+主语+动词原形+其他？some“一些”，用在肯定句中，变成疑问句要把some变成any，故填Didany。8The Browns were watching TV when they got the phone call last night （ 改为一般疑问句）_the Browns_TV when they got the phone call last night？【答案】 Were watching【详解】句意：布朗一家昨晚接到电话时正在看电视。原句是由when引导的时间状语从句，主句是过去进行时结构，一般疑问句要把be动词were提到句首并首字母大写，其他顺序不变
20、，故填Were,watching.（三）就划线部分提问1. 特殊疑问词知多少： 什么，做什么_ 在哪里_ 怎样_ 为什么_ 谁_ 谁的_ 哪一个_ 多久一次_ 多久以后_ 多少个（cn.）_ 多少个 (un.) _ 多少钱_ 多少岁_ 多远_ 多长时间、长度 _ 颜色_ 何时 _ 几点钟 _2. 先写_疑问词，在把be动词、助动词或情态动词_，动词变为_形。 Little Alice is flying a kite in the park. _ is little Alice _ in the park? I was late for school because the traffic w
21、as very busy. _ _ you late for school? I have piano lessons three time a week. _ _ do you have piano lessons?【专练】1The population of our city is 6 million. (对划线部分提问)_ _ the population of your city?【答案】 What is【详解】句意：我们城市的人口是600万。根据划线部分“6 million”可知询问人口的数量，用“What is the population of .?”来询问人口。故填What；i
22、s。2He should go to the doctor for teeth cleaning.(对划线部分提问)_ should he _?【答案】 What do【详解】根据划线部分是“go to the doctor for teeth cleaning.”可知是在问他应该做什么，what“什么”；do“做”。故填What；do。3The old man has lived in Jinan for more than 50 years. (就画线部分提问)_ has the old man lived in Jinan?【答案】How long【详解】句意：这位老人在济南住了50多年
23、。划线部分是“for more than 50 years”可知，此处是提问一段时间，用how long，注意首字母大写，故填How long。4Peter has worked as a teacher since 1998. (对划线部分提问)_ has Peter worked as a teacher?【答案】 How long【详解】句意：彼得自1998年以来一直当教师。根据划线部分“since 1998”可知是对时间段的提问，应该用how long“多久时间”符合语境，故填How；long。5We were playing football at 10 oclock yesterd
24、ay.(对画线部分提问)_ _ at 10 oclock yesterday?【答案】 What were you doing【详解】句意：昨天10点我们在踢足球。分析句子可知句子时态是过去进行时：主语+was/were doing。划线部分是一个动作，对其提问用特殊疑问词what，变成疑问句we需要变成you，划线部分的动作用do代替，句子的时态不变。故填What；were；you；doing。6They are going to take a compass to find their way in mountain areas. (对划线部分提问)_ they going to take
25、 a compass?【答案】Why are【详解】句意：他们要带着指南针在山区找路。划线部分“to find their way in mountain areas”表示带指南针的目的，此处用why询问为什么带指南针，be动词与原句一致用are。句子开头首字母大写。故填Why are。7I think The Adventures of Robinson Crusoe is exciting. （对画线部分提问）_ do you _ _ The Adventures of Robinson Crusoe?【答案】 What think of【详解】句意：我认为鲁滨逊漂流记是令人兴奋的。画线部分是形容词，表示主语对这本书的看法和感受。对其提问可以用固定句型what do you think of.“你认为怎么样”。故填What；think；of。8I have a headache. （对画线部分提问）_ _ _ with you?【答案】 Whats#What the#is matter#wrong【详解】句意：我头疼。根据划线部分“have a headache”可知，此处是询问“你怎么了”，而且句中时态为一般现在时，可用句型“
