Unit 7 The Bad Attitude 情态动词 might 表推测-2025-2026学年九年级英语下册语法知识点全解（教科版五四制）

初三下册教科版（五四制） 【语法专版】 Unit 7 The Bad Attitude 语法专版 【专题】情态动词might表推测 Unit 7 The Bad Attitude 考频分析 教科版（五四制）9下中，情态动词ight表推测是重点语法点，考频占情态动词考察总量的l5% 左右，主要分布在试卷核心题型中：单项选择(1-2题)、完形填空(1-2题)、阅读理解（词义猜测 题中涉及)。在语境理解类题目中，migt表可能性的推测程度及上下文逻辑往往是解题关键。 知识点二：情态动词might表推测 1.基本用法（对现在或将来情况的不确定推测，可能性较低) 1.结构：might+动词原形（无人称和数的变化） 2.例句： ·He might come to the party tonight,,butI'm not sure.（他今晚可能来派对，但我不确定。) 。This book might be Lucy's.It has her name on it.(这本书可能是露西的，上面有她的名字。) 2.否定形式（表”可能不”，可能性较低) 1.结构：might not-+动词原形（不可缩写为mightn't,初中阶段通常用完整形式） 2.例句： 。They might not finish the work today because it's too difficult.(他们今天可能完不成这项工作，因 为它太难了。) ·She might not like this gift..Maybe I should choose another one.(她可能不喜欢这个礼物，或许我 该选另一个。) 3.疑问句形式（通常用于礼貌请求或推测，初中阶段较少见，了解即可） 1.结构：Might+主语+动词原形？ 2.例句： ·Might I borrow your pen for a minute?(我可以借你的钢笔用一下吗？一此处might表请求，语 气比may更委婉) 初三下册教科版（五四制） 【语法专版】Unit7 The Bad Attitude ·Might it rain tomorrow?(明天可能会下雨吗？) 4.与may的区别（可能性程度） 1.might表推测时，可能性比may更低，更不确定 2.例句对比： ·She may be at home now.(她现在可能在家。一可能性较高) 。She might be at home now.（她现在或许在家。一可能性较低，更不确定) 知识点三：情态动词might表推测 1.基本用法（肯定推测） 1.对现在情况的推测（可能性较低）：He might be at home now,butI'm not sure. 2.对过去情况的推测（可能性较低）：She might have finished her homework,but I need to check. 3.对将来情况的推测（可能性较低)：It might rain tomorrow,so take an umbrella 2.句式结构（中考常考） 1.否定推测(might not):He might not come to the party tonight.. 2.疑问推测(might..?):Might she know the answer? 3.语境辨析（中考易错) 1.与may的区别：night表推测时可能性比may更低→You may be right./You might be right..（后者 可能性更小) 2.与could的区别：night更注重不确定性，could可表能力或请求→He could swim when he was five. (能力)/He might swim tomorrow.(推测) 考法精析 考法一：情态动词night表推测的基本结构辨析 核心：根据语境判断推测的时间（现在/将来/过去），选择might+动词原形或might+have+过去分 词的正确结构 真题1（语法填空）： The girl(finish)her homework already,but I'm not sure. 初三下册教科版（五四制） 【语法专版】 Unit 7 The Bad Attitude 答案：might have finished 解析：由语境”already”(已经)和'not sure'”(不确定)可知，此处表对过去情况的不确定推测，结 构应为might+-have+过去分词，finish的过去分词为finished. 真题2（单项选择)： -Where is Tom? -Hebe in the classroom.I saw him there just now. A.might B.must C.can't D.may 答案：A 解析：由语境'just now'(刚才)和不确定的语气可知，此处表可能性较低的推测，might符合：ust 表肯定推测（可能性极高），can't表否定推测（可能性为零），may可能性高于might,均不符合语 境。 考法二：推测语气与情态动词辨析 核心：根据语境中可能性程度的提示，选择might/may/must/can't的正确形式完成句子 真题1（语法填空)： The light is on in his room.He_be studying now,but I'm not sure. 答案：might 解析：由butI'm not sure'”可知推测可能性较低，用might表不确定推测。 真题2（完形填空）： -Look!Someone is dancing in the classroom.Who is it? -It-be Lucy.She said she would practice today. A.must B.might C.can't D.may not 答案：B 解析：由She said she would practice today”可知存在可能性但不确定，might表较低可能性推测，符 合语境。must语气过于肯定，can't表否定推测，may not表”可能不均不符合。 考法三：情态动词might表推测的综合运用与辨析 核心：结合语境判断might表推测的可能性程度，区分与may/must/can't的用法差异，掌握对不同 时间推测的正确结构及常见错误规避 真题1（单项选择)： -Where is Lucy?I haven't seen her for hours. -She_be in the library.She always reads there after school,but I'm not sure. A.must B.may C.might D.can't 答案：C 3 初三下册教科版（五四制） 【语法专版】 Unit 7 The Bad Attitude 解析：由butI'm not sure'”可知推测可能性较低，mnight表不确定推测且可能性低于may,符合语 境：must表肯定推测（可能性极高），can't表否定推测（可能性为零），均不符合”不确定，的语气。 真题2（语法填空)： The story sounds unbelievable.It-(not happen)in real life,but we still enjoy reading it. 答案：might not happen 解析：根据'unbelievable”及but we still enjoy reading it”可知此处表”可能不发生”的较低可能性推 测，应用might not+-动词原形；主语为it,无需考虑人称变化，直接用might not happen。 解题小妙招 推测结构看时间，现在将来原形连；过去推测have done”,might后面跟齐全： 语气强度要辨明，must肯定can't否；may可能比might强，不确定时选might: 语境提示是关键，”not sure'”来帮忙；时间标志”already/just now',过去推测记心上： 综合运用看两维，时间语气都考虑；might表推测最常见，结构语气记心间。 真题演练 演练一：单项选择试题（共10题） 1.-Where is Lily? -She-be in the gym.I saw her playing basketball there 10 minutes ago. A.must B.might C.can't D.may not 2.The story sounds too good to be true.It_be a lie. A.must B.might C.can't D.may 3.-Is this Mary's pen? -I'm not sure.Itbe hers. A.must B.can't C.might D.may not 4.He_finished his homework yet.He was playing games just now. A.might not have B.must have C.can't have D.may not 5.The weather report says it will rain tomorrow,but it-not.The forecast isn't always right. A.must B.might C.can't D.may 6.-Who broke the window? -Itbe Tom.He was the only one outside. A.must B.might C.can't D.may not 7.They_be watching TV at 8 p.m.last night.I heard noise from their room. A.might have been B.might be C.must be D.can't have 4 初三下册教科版（五四制） 【语法专版】Unit7 The Bad Attitude 8.The exam is next week.Itbe difficult,but I'm not sure. A.must B.can't C.might D.may not 9.-I use your dictionary? -Sure,here you are. A.Must B.Might C.Can't D.May 10.She-come to the party tonight.She has a lot of work to do. A.must B.might not C.can't D.may 演练二：填空试题（共10题） 1.They(go)to the park yesterday.No one saw them at home. 2.This bookbe)Jack's.It has his name on it,but I'm not sure. 3.You_(not finish)the project yet.The deadline is next week. 4.He(forget)to lock the door.The key is still on the table. 5.The children-(play)in the garden now.Their toys are there. 6.It_(rain)tomorrow.The sky is cloudy,but it's hard to say. 7.She(not agree)with our plan.She usually has different ideas. 8.They_(arrive)in Beijing already.I got a message from them an hour ago. 9.This_(be)the right answer.Let's check with the teacher. 10.We_(meet)at the station at 3 p.m.I wrote it on the calendar,but I'm not certain. 演练三：语法填空试题（共10空） Yesterday was Sunday.Tom didn't go to school,so his mother wondered where he was.She thought,"He 1-(play)basketball with friends because he loves sports,but I'm not sure."At noon,Tom still didn't come home.His mother called his friend Mike,but Mike said,"He 2(not come)to the playground this morning.I didn't see him." Tom's mother worried,"He 3_(get)lost!Or he 4-(go)to the library to read books.He often does that on weekends."Just then,Tom walked in.His mother asked,"Where have you been?Tom said,"I helped an old man carry his bags.He 5_(be)tired,so I took him home." His mother smiled and said,"You 6_(tell)me earlier!I was worried."Tom said,"Sorry,Mom.I 7 (forget)to call you.The old man 8(live)far from here,so it took a long time." Later,Tom's father came back.He heard the story and said,"Tom,you 9_(be)a good boy.But next time, you 10_(not stay)out so long without telling us." 5 初三下册教科版（五四制） 【语法专版】 Unit 7 The Bad Attitude 答案区 演练-：1B2.B3.C4.A5B6.A7.A8.C9B10B 演练二：1.might have gone2.might be3.might not have finished4.might have forgotten5.night be playing 6.might rain 7.might not agree 8.might have arrived 9.might be 10.might meet 演练三：1.might be playing2.might not have come3.might have got4.might have gone5.might have been 6.might have told 7.might have forgotten 8.might have lived 9.must be 10.might not stay 6