状语从句综合运用-2025-2026学年九年级英语下册语法重难点精讲（沪教版）

9年级沪教上海版 【语法专版】 D版重难点精讲 语法专版 【语法专题】状语从句综合运用 初中沪教上海版9年级 语法精讲 语法概述：状语从句综合运用=用来修饰主句中的动词、形容词或副词等，表示时间、原因、条 件、让步、目的、结果、方式、比较等意义的从句，在句中可作时间状语、原因状语、条件状语、 让步状语、目的状语、结果状语、方式状语、比较状语。 重难点讲解 重难点一：时间状语从句连接词的辨析与运用讲解： 时间状语从句常用连接词有whn(当…时)、while(当…时，主句与从句动作同时进行，从 句多用延续性动词)、as(一边…一边，强调伴随)、until/till(直到…)、before(在…之前)、 after（在…之后)、since（自从…)as soon as(一…就…)等。需注意：when可接延续 性或非延续性动词，while只能接延续性动词；as soon as引导的从句用一般现在时表将来，主句 用一般将来时(“主将从现”)。 例句： 。I was doing my homework when my mother came back.(when接非延续性动词came,主从句动 作先后发生) ●While she was reading,he phone rang.(while接延续性动词reading,主从句动作同时进行) ●He will call you as soon as he arrives in Beijing.(as soon as从句用一般现在时arrives,主句用 将来时will call) 真题再现： l.(2024上海浦东期末，沪教上海版)We were playing basketball on the playground一it suddenly began to rain. A.when B.while C.as D.since 答案：A 解析：从句动作began为非延续性动词，强调“当…时突然发生某事”，用when。 2.(2023上海徐汇月考，沪教上海版)My father usually reads newspapers一my mother is cooking dinner 9年级沪教上海版 【语法专版】 D版重难点精讲 A.when B.while C.as soon as D.until 答案：B解析：主从句动作“读报纸”和“做饭”同时进行，且cooking为延续性动词，用 while。 重难点二：条件状语从句的时态规则（主将从现）讲解： 条件状语从句由if(如果)、unless(除非=if..not)等引导，遵循“主将从现”原则：主句用一般 将来时/情态动词(can/may/must)/祈使句，从句用一般现在时表将来。需注意：unless本身含否 定意义，从句不可再用ot:if表“是否”时（宾语从句）不受此规则限制。 例句： 。If it rains tomorrow,we will stay at home.(if表条件，从句用一般现在时rains,主句用将来时 will stay) 。You can't pass the exam unless you study hard.(unless-=if.not,从句用一般现在时study,主句 用情态动词can't) ·Idon't know if he will come tomorrow.(if表“是否”，引导宾语从句，根据时间状语tomorrow 用将来时will come) 真题再现： l.(2024上海闵行期中，沪教上海版)You一get good grades in the exam if you一careful enough, A.will are B.will will be C.are will be D.areare 答案：A 解析：if表条件，遵循“主将从现”，主句用will get,.从句用are careful。 2.（2023上海静安期末，沪教上海版)Unless you一quiet in the library,the librarian_ask you to leave A.keep will B.will keep will C.keep keeps D.will keep keeps 答案：A解析：unless引导条件状语从句，从句用一般现在时keep,主句用将来时will ask。 重难点三：让步状语从句连接词though/although与but的误用讲解： 让步状语从句常用hough/although(虽然，尽管)引导，不可与but(但是)同时出现在句中（二 者选其一)，但可与yet/still(仍然)连用。此外，though可放句末，意为“不过”，although不可。 2 9年级沪教上海版 【语法专版】 D版重难点精讲 例句： 。Though he is young,he knows a lot.(正确，though不与but连用) ●He is young,but he knows a lot.(正确，用but不用though) ·It was raining hard.We went out for a walk,though.(though放句末，表“不过”) 真题再现： 1.(2024上海虹口月考，沪教上海版)_the tas冰is difficult,we will try our best to finish it on time. A.Though B.But C.Because D.So 答案：A 解析：前后句为让步关系“尽管任务难，仍会尽力完成”，用though,且不与but 连用。 2.（2023 上海杨浦期末，沪教上海版)She didn't go to school yesterday一she was ill,一she still finished her homework. A.because though B.though because C.because but D.but because 答案：A解析：第一空表原因“因为生病没上学”，用because:第二空表让步“尽管如此 仍完成作业”，用though(though可与because连用，不与but连用)。 重难点四：原因状语从句连接词because/.since/as的区别讲解： 三者均表“因为”，语气由强到弱为because>since>as。 。because:回答why提问，直接说明原因，可放句首或句末： ·since:意为“既然”，强调已知的、显而易见的原因，通常放句首： 。s:意为“由于”，原因较次要，主从句关联性较弱，可放句首或句中。 例句： ·He didn't attend the meeting because he was seriously ill.（直接原因，回答why) 。Since everyone is here,.let's start the discussion..(已知原因“大家都到了") ·As the weather is fine,we decide to go hiking.(次要原因“天气好”) 真题再现： 1.(2024上海黄浦期末，沪教上海版)-Why did you late for class this morning? _I missed the early bus 3 9年级沪教上海版 【语法专版】 D版重难点精讲 A.Since B.As C.Because D.For 答案：C解析：回答why提问，用because直接说明原因。 2.(2023上海长宁期中，沪教上海版)_you have finished your homework,you can watch TV for a while. A.Because B.Since C.As D.For 答案：B解析：强调“既然作业已完成”这一已知事实，用snce放句首引导原因状语从句。 重难点五：状语从句的省略现象(when/while/if等+分词)讲解： 当状语从句的主语与主句主语一致，且从句谓语含be动词时，可省略从句的主语和be动词，保 留“连接词+现在分词/过去分词/形容词”结构。若从句为主动关系用现在分词，被动关系用过去 分词。 例句： 。When(he was)walking in the street,,he met an old friend.(主从句主语一致，省略he was,主动 关系用walking) ·The film is very interesting if (it is))watched with friends.(主从句主语一致，省略itis,被动关 系用watched) 真题再现： 1.(2024上海普陀月考，沪教上海版)一_the book,please return it to the library on time.. A.After reading B.After read C.When read D.While you reading 答案：A解析：从句主语与主句主语you一致，省略you are,主动关系用reading,“读完 书后”用After reading 2.(2023上海金山期末，沪教上海版)She always feels nervous一speaking in front of the class. A.when B.while C.as D.since 答案：B解析：从句完整形式为“while she is speaking”,省略主语和be动词，保留while- 现在分词speaking,强调“在…过程中”。 9年级沪教上海版 【语法专版】 D版重难点精讲 易错点综合演练 L单项选择（直击重难点) 1.We were having dinner at home_the doorbell rang suddenly. A.when B.while C.as D.since 2.If it_sunny tomorrow,we_a picnic in the park. A.will be will have B.is will have C.is have D.will be have 3.he is very busy,he still spends an hour reading every day. A.Because B.Though C.So D.But 4.-Why didn't you join the party last night? -I had to take care of my sick grandmother. A.As B.Since C.Because D.For Ⅱ.用所给词的适当形式填空（强化句型结构） 1.My brother usually listens to music while he(do)his homework. 2.If you_(not hurry),you_(miss)the early bus. 3.Though it(rain)heavily,they(continue)working in the field. 4.She-(not go)to school yesterday because she(be)ill. 5.As soon as the teacher_(come)into the classroom,the students(stop)talking. Ⅲ，短文填空（综合运用状语从句） 用括号内所给词的适当形式或适当的连词填空，使短文完整通顺。 Tom is a hard-working student.1.-he is only 15 years old,he has already learned to play the piano very well.He practices playing the piano every day 2.-he wants to be a musician in the future.3. 5 9年级沪教上海版 【语法专版】 D版重难点精讲 he is practicing,he always forgets the time.One day,his mother said to him,"Tom,4.you don't stop practicing now,you 5.-(not have)dinner on time."Tom said,"Mom,I will stop soon.6.I finish this piece of music,I 7.(come)to eat." V.连词成句（聚焦句型结构） 1.while,was,I,reading,came,my friend,in,(. 2.if,finish,you,homework,your,can,you,go,out,( 3.though,tired,he,was,he,kept,working,( 4.because,late,he,got up,was,he,for,school,(. 5.as soon as,the bell,rang,rushed,the students,out of,the classroom,(. V.按要求改写句子（巩固否定、疑问句式） 1.He will call you as soon as he arrives.(改为否定句) 2.While she was watching TV,her father came back.(改为一般疑问句) 3.We will have a picnic if it is fine tomorrow.(对划线部分提问) 4.Though he is young,he can speak three languages.(改为同义句) He is young,_he can speak three languages. 参考答案 I.单项选择：1.A2B3B4.C Ⅱ.用所给词的适当形式填空： 1.is doing 2.don't hurry,will miss 3.was raining;continued 4.didn't go;was 5.comes;will stop Ⅲ.短文填空： 1.Though 2.because 3.While 4.if 5.won't have 6.As soon as 7.will come 6 9年级沪教上海版 【语法专版】 D版重难点精讲 V.连词成句： 1.While I was reading my friend came in. 2.If you finish your homework you can go out. 3.Though he was tired he kept working. 4.He was late for school because he got up late. 5.As soon as the bell rang the students rushed out of the classroom V.按要求改写句子： 1.He won't call you as soon as he arrives. 2.Was she watching TV when her father came back? 3.What will you do if it is fine tomorrow? 4.but 7