Unit 7 Journeys 时间状语从句-2025-2026学年九年级英语全一册语法知识点全解（北师大版）

初三全册北师大版 【寒假专版】 A版知识点全解 寒假专版 【专题】时间状语从句 语法专项突破 考频分析 北师大版9全Unit7 Journeys中，时间状语从句是重点语法模块，考频占句法总量的I5%左右，主 要分布在核心题型：单项选择(2-3题)、完形填空(2-3题)、语法填空(1-2题)、书面表达（辅助 考察，影响句子逻辑连贯性)。在语境理解类题目中，时间状语从句的引导词选择及主从句时态呼 应往往是解题关键。 考查内容 。引导词辨析：when、while、as、before、after、until、since、as soon as等引导词的含义及适用场景 。时态呼应：主从句时态的搭配规则（如“主将从现”“主过从过”等）与语境中的灵活运用 。语境理解：结合具体情境判断时间状语从句表示的时间关系（如同时、先后、条件等）及逻辑衔接 知识点一：时间状语从句的引导词及用法 1.常用引导词（表时间关系） 1.时间点类：when（当…时)、while(当…时，主句从句动作同时进行)、as(当…时，强调动 作同时发生) 。例句：(I)I was reading a book when my mother came in.(when引导，主句过去进行时，从句一般 过去时)(2)While she was cooking,I was doing my homework.(while引导，主从句均为过去进行 时) 2.时间段类：after(在…之后)、before(在…之前)、until/till(直到…)、since（自从…) 。例句：(I)He went to bed after he finished his homework.(after引导，从句动作先发生)(2)Iwon't leave until you come back.(until引导，表“直到…才"”) 3.频率/条件类：as soon as(一…就…)、every time（每次…) ·例句：(I)I will call you as soon as I arrive in Beijing..(as soon as引导，主将从现)(2)Every time I see her,,she is smiling.(every time引导，表习惯性动作) 初三全册北师大版 【寒假专版】 A版知识点全解 2.时态搭配规则 1.主将从现：主句用一般将来时，从句用一般现在时（适用于if,as soon as,.until等引导词） 。例句：We will go for a picnic if it doesn't rain tomorrow. 2.主过从过：主句用过去时态，从句用相应过去时态（如when,while引导的时间状语从句） 。例句：She was listening to music while her brother was playing games, 知识点二：时间状语从句的连接词及用法 1.引导时间状语从句的常用连接词 1.whn(当…时)：既可指时间点，也可指时间段，主句和从句动作可同时发生或先后发生 ·例句：(I)I was reading a book when the doorbell rang.(从句动作rang为时间点，主句动作was reading持续)(2)When she gets home,she will cook dinner.(主从句动作先后发生，遵循“主将 从现”) 2.wle(当…时，在…期间)：强调主句动作在从句动作进行过程中发生，从句常用进行时 。例句：(l)My father was watching TV while my mother was cooking.(主从句动作同时进行，均用 过去进行时)(2)Please take notes while you listen to the teacher.(主句为祈使句，从句用一般现在 时表动作进行) 3.s（当…时，一边一边…)：强调主从句动作同时发生，伴随进行 。例句：(I)As he walked along the street,.he sang a song.(“走路”和“唱歌”同时进行)(2)We talked as we ate..(“吃”和“交谈”伴随发生) 4.before(在…之前)：表示主句动作发生在从句动作之前 。例句：(I)You must finish your homework before you watch TV.(“完成作业”在“看电视”之前) (2)I had learned English for3 years before I went to middle school..(从句用一般过去时，主句用过 去完成时表“过去的过去”) 5.after(在…之后)：表示主句动作发生在从句动作之后 ·例句：(I)After she finished her work,she went shopping.(从句动作finished先发生，主句动作went 后发生)(2)We will go hiking after the rain stops..(遵循“主将从现”，从句用一般现在时表将来) 6.util/ill（直到…为止)：主句为肯定句时，谓语动词用延续性动词：主句为否定句时，谓语动词 用短暂性动词，意为“直到…才…” 。例句：(I)He waited until his mother came back.(wait为延续性动词，“一直等到妈妈回来”)(2) I didn't go to bed until I finished my homework.(go to bed为短暂性动词，否定句表“直到完成作 业才睡觉”) 初三全册北师大版 【寒假专版】 A版知识点全解 7.as soon as(一…就…)：表示主句动作紧接着从句动作发生，遵循“主将从现”原则 ·例句：(I)I will call you as soon as I arrive in Beijing.(主句用一般将来时，从句用一般现在时表 将来)(2)As soon as the bell rang,the students ran out of the classroom.（主从句均用一般过去时， 动作紧接着发生) 2.时间状语从句的时态呼应规则 1.当主句为一般现在时/一般将来时，从句用一般现在时表将来（主将从现） ●例句：(I)I will tell him the news when he comes back.（主句一般将来时，从句一般现在时)(2) She often helps her mother with housework after she finishes her homework.(主句一般现在时，从 句一般现在时) 2.当主句为一般过去时，从句常用一般过去时/过去进行时/过去完成时（根据动作发生时间关系） ·例句：(I)He said he had seen the movie before I told him about it.(从句用一般过去时，主句用过 去完成时)(2)While I was doing my homework,my brother was playing games.(主从句均用过去 进行时，表过去同时进行的动作) 3.当从句表示客观真理或习惯性动作时，无论主句时态如何，从句均用一般现在时 ·例句：(I)The teacher told us that the earth goes around the sun.（从句“地球绕太阳转”为客观真 理，用一般现在时)(2)He said he usually gets up at6o'clock every morning.(从句“每天早上六 点起床”为习惯性动作，用一般现在时) 3.时间状语从句的省略现象 1.当从句的主语和主句的主语一致，且从句谓语含有be动词时，可省略从句的主语和be动词 ·例句：(I)When (he was)walking in the park,he met an old friend.(省略从句主语he和was)(2) While (I am)studying,I like to listen to light music..(省略从句主语I和aum) 知识点三：时间状语从句 1.引导词：when(当…时) 1.基础用法（中考必背)： 。表示某个动作发生时，另一个动作正在进行→例句：I was reading a book when my mother came in. ●表示两个动作同时发生→例句：When she goes to school,,she always takes the bus. ◆主句用一般将来时，从句用一般现在时（主将从现）→例句：I will call you when I arrive in Beijing 2.引导词：while（当期间) 初三全册北师大版 【寒假专版】 A版知识点全解 1.核心用法（中考常考)： ·强调主从句动作同时持续进行（常用进行时）→例句：While my father was watching TV,my mother was cooking 。表示对比（然而）→例句：I like reading while my brother likes playing sports. 3.引导词：until/ill(直到…) 1.用法区别（中考易错）： ·until用于肯定句：主句动词为延续性动词，表示动作持续到从句时间为止一例句：I will wait here until you come back. ●not..until.…（直到…才…)：主句动词为短暂性动词，强调动作在从句时间之后发生→例句： He didn't go to bed until he finished his homework. 4.引导词：asso0nas（一…就…) 1.时态规则（中考核心)： ●主句用一般将来时，从句用一般现在时（主将从现）→例句：As soon as the bell rings,the students will go into the classroom. 。主句用一般过去时，从句用一般过去时→例句：She started to cry as soon as she heard the badnews. 考法精析 考法一：引导词辨析 核心：根据主从句动作的时间关系（同时发生、先后发生等）及动词性质（延续性/非延续性），选 择正确的时间状语从句引导词 真题1（单项选择)： I was doing my homework my father came back home A When B While C As D After 答案：B 解析：从句“was doing my homework”为延续性动作且用过去进行时，主句“came back”为短暂 性动作，强调主句动作在从句动作进行过程中发生，用while引导。 真题2（单项选择)： He has made great progress he entered the new school A when B before C since D until 答案：C 解析：主句“has made great progress”为现在完成时，从句“entered”为一般过去时，“since+一般 过去时从句”与现在完成时主句搭配，表示“自从…以来”，符合语境。 考法二：引导词选择与省略辨析 4 初三全册北师大版 【寒假专版】 A版知识点全解 核心：根据主从句动作关系及主语一致性，选择正确引导词并判断是否适用省略结构 真题1（语法填空）： (walk)along the street,I found a wallet lying on the ground. 答案：While walking 解析：主从句主语均为T',从句含be动词(was),符合省略规则；”walk”为延续性动作且与主句动 作同时发生，用while引导，省略主语和be动词后为While walking'”。 真题2（单项选择）： It was 9 p.m. we finished the project. A.when B.while C.as D.since 答案：A 解析：此处为Itbe+时间点+when从句”特殊句式，强调”完成项目时是晚上九点”，when引导时 间状语从句符合句式要求；while/as需接延续性动词且强调动作同时性，since表”自从”均不符合 语境。 考法三：时间状语从句的综合运用及错误辨析 核心：结合引导词选择、时态呼应规则及常见错误类型，判断时间状语从句的正确表达 真题1（单项选择)： TV when my father came back last night A.watch B.watched C.was watching D.am watching 答案：C 解析：when引导时间状语从句，从句用一般过去时(came),主句动作“看电视”在从句动作发生 时正在进行，需用过去进行时，结构为“was/were+现在分词”，主语为I,be动词用was,watch的 现在分词为watching。 真题2（语法填空）： She usually does homework after she (finish)dinner. 答案：finishes 解析：after引导时间状语从句，主句用一般现在时(does),从句表习惯性动作，用一般现在时：主 语she为第三人称单数，谓语动词finish用第三人称单数形式finishes。 解题小妙招 时间状语从句解题妙招 引导词选看动性，延续进行用while: 短暂点动常用when,主现完时配since: 主将从现要牢记，主过从过也适用： 省略结构看主语，主同有be可省掉： 特殊句式记心间，Itbe时间when连。 初三全册北师大版 【寒假专版】 A版知识点全解 真题演练 演练一：单项选择（共10题） 1.I was reading a book my brother turned on the TV. A When B While C As D Since 2.We have lived in this city my father got a new job here. A when B before C since D until 3. she was cooking,the phone rang suddenly. A When B While C As D After 4.He will call you he arrives at the airport. A as soon as B when C while D since 5.It was midnight we finally finished the work. A when B while C as D since 6.I see the photo,I always think of my childhood. A Every time B Before C Until D As soon as 7.The students were talking loudly the teacher came into the classroom. A when B while C as D since 8.You can't leave you finish your homework. A when B before C until D as he walked along the river,he sang his favorite song. A When B While C As D After 10.It five years since we met last time A is B was C will be D has been 演练二：填空（共10题) 1.She was listening to music her mother was washing clothes. 2.I will tell him the news he comes back I got to the station,the train had already left. 4.He has worked in this company he graduated from college 5. (watch)TV last night,I heard a strange noise outside 6.It was 7:00 a.m. the alarm clock rang 7.They didn't stop working it was dark. 8. (be)a child,she often played in the park near her home. 9.Please call me you arrive in Shanghai 6 初三全册北师大版 【寒假专版】 A版知识点全解 10: I opened the door,my cat ran out immediately. 演练三：语法填空 Last Sunday,I decided to visit my grandparents.I planned to call them 1 I left home,but I forgot. When I arrived at their house,Grandma was busy in the kitchen.She was making dumplings 2 Grandpa was reading newspapers in the living room.I greeted them,and Grandpa asked,"3 did you come here?”I said,.“I wanted to give you a surprise!” After lunch,we went for a walk in the park.4(walk)along the path,I saw many children playing games.Grandma told me stories about her childhood 5 we walked.She said,"I loved to climb trees 6I was your age." 7 we got home,it was already 5 p.m.I promised to visit them again 8 Ihave free time.Before leaving,Grandma gave me a bag of apples.She said,"Eat one 9 you feelhungry."I felt very happy that day.It has been a long time 10 we spent such a great day together. 答案区 演练-：1.A2.C3B4.A5.A6.A7.A8.C9.C10.A 1.while 2.when/as soon as 3.When/After 4.since 5.While watching 6.when 7.until 8.When 9.as soon as/when 10.When 1.before/when 2.while 3.When 4.While walking 5.as 6.when 7.When 8.when/as soon as 9.when 10.since 7