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2021年初中英语语法：时间状语从句解析和练习题(含答案)在句子中起时间状语作用的句子称为时间状语从句。
时间状语从句可以放在句首、句中和句尾。
引导时间状语从句的词有when、while、as、before、after、since、until/till、as soon as、once、each time、next time、the moment、immediately、instantly等。
（一）when引导的时间状语从句1）when意为“当......时”，引导时间状语从句，表示主句的动作和从句的动作同时或先后发生例句：Faith is the bird that feels the light when the dawn is still dark. 信念是黎明前的黑夜里能感受到光明的鸟儿。
例句：When I was wandering in the street, I met her. 我在街上徘徊的时候遇到了她。
2）when引导的时间状语从句中的动词可以用延续性的=动词，也可以用终止性动词例句：He was listening to the music when I went in. 当我进去的时候，他正在听音乐。
例句：I will visit my parents when I have time. 我有空时会去看望我的父母。
（二）while引导的时间状语从句While引导的时间状语从句，常译为“与......同时，在......期间”，while引导的从句常用延续性动词或表示状态的动词。
例句：They rushed in while we were discussing problems. 当我们正在讨论问题时，他们冲了进来。
例句：Make hay while the sun is shining. （谚）趁热打铁。
（三）as引导的时间状语从句As引导的时间状语从句，可以表达“正当，一边一边，随着”等意思。
时间状语从句用句子表达一件事情或一个行为发生的时间，这个句子就叫时间状语从句。
时间状语从句根据其所表示的时间不同，所使用的连词也不同。
下面我们一起来看一下几个常见的时间状语从句：1．when引导的从句：表示主句的动作和从句的动作同时发生，或从句的动作发生在主句动作之前。
例如：I was going out when a visitor came. (动词动作同时发生。
)我正要出门，有客人来访。
I shall tell her the good news when she comes.她来时，我将告诉她这个好消息。
小试牛刀：I found mother cooking for me. I got home.(when)_______________________________________ He was listening to the radio when I home. (get)2．while 引导的从句：表示“当……过程中”，强调某一段时间内主句和从句中谓语动词所表示的动作在同一时期发生。
由于while从句表示一个持续的行为，所以从句中要用持续性动词，并且持续性动词常用进行时态。
例如：Keep an eye on my little sister while I am away.我不在时，请照看一下我的小妹妹。
While we were watching TV, Jim came in. 我们看电视的时候，Jim进来了。
小试牛刀：It started to rain. We were playing football.(while)_______________________________________ Lucy was cleaning the room Lily was listening to music.3．as引导的时间状语从句：表示“当……的时候；一边……一边……；随着……”，其从句的主语与主句的主语往往是同一人或物。
（一）状语从句概述定义状语从句用作状语，是起副词作用的句子。
位置状语从句可以放在主句之前，也可以放在主句之后，时间、条件、原因和让步状语从句放在句首时需要用逗号和主句隔开。
分类根据其作用可以分为时间、地点、原因、条件、目的、让步、方式和比较等状语从句。
作用它可以修饰谓语、非谓语动词、定语、状语和整个句子。
（二）状语从句详解1. 时间状语从句引导词用法示例when 意为“当…的时候”。
When引导从句的谓语动词可以是延续性动词，也可以是瞬间动词。
并且when有时表示“就在那时”A liar is not believed when he speaks the truth.说谎者讲真话时也没有人相信。
When he arrives, I’ll call you. When you laugh and smile, your body relaxes.while 意为“在…的时候，在…的同时”。
While引导从句的谓语动词必须是延续性的，发生时间较长，并强While I was standing at the window, I saw several boys running along the street.While John was watching TV, his wife was cooking.调主句和从句的动作同时发生（或者相对应）。
While 有时还可以表示对比。
as 意为“一边…一边…”。
As引导的动作是延续性的，发生时间较短，一般用于主句和从句动作同时发生；as也可以强调一前一后。
The writer was angry as he was travelling on a train to London because someone had invaded his “space”.He smiled as he stood up.after 意为“在…之后”。
表示主句动作发生在从句动作之后。
以when 引导的时间状语从句- When I got home, my son had finished his homework. (主句动作发生在从句之前)- When(当...时候, 主语+did) we arrived, it was raining.- When(正当...时候，主语+be+doing) I was playing the computer games, my mum came in. - He is always nervous when he speaks to strangers.- I usually walk to school when it rains.以while 引导的时间状语从句- While I was reading, my brother was playing with his toy cars. (主从句子动作同时发生)- While/When/As he was studying in the library, I saw him. (表示一段时间时，while/when/as 可替换)while引导的从句的谓语动词必须是持续性动作:I saw him while(x) I was getting off the bus.(x)I saw him when/as I was getting off the bus.以as 引导的时间状语从句- He will grow wiser as he grows older. 随着年龄的增长，他会聪明起来。
（随着，表示时间的推移，这时，不用when/while）- He entered the room as/when/while the meeting was going on. 正当开会的时候，他走进房间。
以before引导的时间状语从句- He had washed his hands before he had dinner. (主句动作先于从句动作)- Please clean the house before you move in.以after 引导的时间状语从句- She went on holiday after she had taken the examination. (从句动作先于主句)- You can watch TV after you finish your homework.以since 引导的时间状语从句- She has been in the house since she came to the city. (主句完成时态，从句过去时)- I have taught them English since last year.以as soon as引导的时间状语从句- I will write to you as soon as I get to America. 我一到美国就会给你写信。
初中英语状语从句归纳附练习及答案状语从句是指在句子中充当状语的从句。
它可以修饰动词、形容词、副词等，表示时间、条件、原因、方式等不同的状况。
掌握状语从句的用法对于理解和运用英语句子结构非常重要。
本文将对初中英语中常见的状语从句进行归纳，并提供相应的练习题及答案供大家学习参考。
一、时间状语从句时间状语从句常用when，while，as，before，after，since，until等引导。
表示主句动作发生的时间。
例句1:I will call you when I arrive at the airport.当我到达机场时，我会给你打电话。
例句2:She likes to listen to music while she is doing her homework.她喜欢一边做作业一边听音乐。
练习题：1. He will go to bed _______ he finishes his homework.2. Don't play with fire _______ your parents are not at home.3. You can visit the museum _______ you have free time.1. after2. while3. whenever二、条件状语从句条件状语从句通常使用if或unless引导。
表示条件或假设的情况。
例句1:If it rains tomorrow, we will stay at home.如果明天下雨，我们就待在家里。
例句2:You will pass the exam unless you work hard.除非你努力学习，否则你将无法通过考试。
练习题：1. I will buy a new car _______ I save enough money.2. _______ you study hard, you will fail the exam.3. She won't go shopping with you _______ it stops raining.答案：1. if3. until三、原因状语从句原因状语从句常用because，since，as等引导。
状语从句精讲及练习及答案状语从句由从句担任的状语，在句子中可修饰谓语（或其它动词）、形容词、副词或是整个句子，它可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。
状语从句是一较大的语法项目，也是近几年高考题中常见的一个重要试点。
高考中已考查了时间、让步、地点、条件、目的等状语从句，这些从句仍是今后高考热点，应作充分准备。
同时对方式状语从句也应引起重视。
（一）时间状语从句表示时间的状语从句可由when,as,while,whenever,after,before,till(until),since,once,as soon as(或the moment),by the time,no sooner…than,hardly(scarcely)…when,every time等引导。
e.g.When I came into the office,the teachers were having a meeting.He started as soon as he received the news.Once you see him,you will never forget him.No sooner had I gone to bed than I went to sleep.（二）原因状语从句原因状语从句是表示原因或理由的，引导这类从句的最常用的连词是because,since,as,now that（既然）等，for表示因果关系时（它引导的不是从句）为并列连词，语气不如because强。
e.g.He is disappointed because he didn't get the position.As it is raining,I will not go out.Now that you mention it,I do remember.（三）地点状语从句引导地点状语从句的连词是where和wherever等。
初中英语状语从句归纳(附练习及答案)状语从句指句子用作状语时，起副词作用的句子。
它可以修饰谓语、非谓语动词、定语、状语或整个句子。
根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。
状语从句一般由连词(从属连词)引导，也可以由词组引起。
从句位于句首或句中时通常用逗号与主句隔开，位于句尾时可以不用逗号隔开。
一、时间状语从句要点:时间状语从句，由以下连词引导：when while as after before as soon as since till /until by the time在时间状语从句中，要注意时态一致。
一般情况下主句是将来时的时候，从句要用一般现在时。
1.when当。
的时候mozart started writing music when he was four years old.当)XXX的时分，开始写音乐作品。
2.while当。
时XXX a lot of places while he was traveling.他在旅途中参观了许多地方。
3.as在。
的同时；一边。
一边。
XXX.他一边站起来一边笑着。
4.after在。
之后he left the classroom after he had finished his homework the other day.前几天做完作业之后回的家。
5.before在。
之前XXX.XXX先生来这之前已经在一家银行里工作一年了。
6.XXX。
就。
we began to work as soon as we got there.我们一到那就开始工作。
i will write to you as soon as i get home.我一到家就给你写信。
7.since自。
以来到现在透露表现自曩昔的一个出发点工夫到目前(语言工夫)为止的一段延续工夫。
主句普通用目前完成时，从句用普通曩昔时。
mr green has taught in that school since he came to china three years ago.自XXX先生来中国以来，他就在这所学校教书。
状语从句讲解及习题附答案word文档良心出品（一）状语从句概述（二）状语从句详解1.时间状语从句引导词用法示例whe n 意为“当…的时候” When A liar is not believed when 引导从句的谓语动词可以he speaks the truth. 说谎者讲是延续性动词，也可以是真话时也没有人相信。
瞬间动词。
并且when有When he arrives , I 'call you.时表示“就在那时”When you laugh and smile,your body relaxes.while 意为“在??的时候，在…的While I was standing at the 同时” While引导从句的window, I saw several boys谓语动词必须是延续性running along the street.的，发生时间较长，并强调主句和从句的动作同时发生（或者相对应）。
While有时还可以表示对比。
as 意为“一边…一边…” As引导的动作是延续性的,发生时间较短，一般用于主句和从句动作同时发生；as也可以强调一前一后。
after 意为“在??之后”表示主句动作发生在从句动作之后。
主句与从句的动作时间关系与before引导的从句相反。
before 意为“在??之前”引导的从句不用否定形式的谓语,并且当before引导的从句位于主句之后，有时译成While John was watchingTV, his wife was cook ing.The writer was angry as hewas travelling on a train to London because someonehad inv aded his sp ace ”.He smiled as he stood up.With many hungry visitors waiting, don' stay too longat your table after you havefini shed.If an early exit is n ecessary, you can leave after a sceneis over.You can ' watch TV beforeyou finish your homework. Before it ended, the theatre was almost empty.“就才”当主句用将来时,My father had left for Ca nada意为“自从，从??以来”引since I have been studying hardI will call you as soon as Iarrive.2. 地点状语从句引导词用法示例where意为“哪里。
高中时间状语从句及练习(含解答)状语从句是用来修饰主句中的动词、形容词或副词等的从句。
当状语从句放在主句之前时，通常需要用逗号分隔；而当放在主句之后时，则不需要逗号。
根据其意义和作用，状语从句可分为时间、原因、地点、条件、让步、目的、结果、方式和比较等九种类型。
1.时间状语从句时间状语从句用于表示主句动作发生的时间，通常由when、while、as、before、after、till (until)、once、by the time、as soon as、no sooner。
than和hardly。
when等引导词，以及名词词组XXX等构成。
其中，when表示“在……的时候”，强调“特定时间”。
例如：When spring came。
he felt like taking a trip.When he was eating his breakfast。
XXX.需要注意的是，连词when在状语从句中还有其他含义。
比如，它可以表示突然发生的事，含义为“（正在……时）忽然”；可以表示过早发生某事，意为“（还没……）就”；还可以表示“在……的情况下”，通常译为“虽然”、“既然”、“如果”等。
举个例子：I was just coming along to see you when I ran into Wilson.I hadn’t been reading for half an hour when I heard steps outside.She refuses help when (although) she has many friends.Why do you walk when (since) you have a car?How can I make them understand if they refuse to listen to me。
It's frustrating when you XXX。
高中时间状语从句和练习[含答案解析]状语从句状语从句在句中作状语，修饰主句中的动词、形容词或副词等。
状语从句放在主句之前时，常用逗号分开;放在主句之后，一般不用逗号。
状语从句按其意义和作用可分为时间、原因、地点、条件、让步、目的、结果、方式、比较等9种。
1.时间状语从句时间状语从句表示主句动作发生的时间，主要由when，while，as ; before, after; till (until); once, by the time, as soon as, no sooner ... than和hardly ... when及名词词组the moment等引导。
1) when“在……的时候”; while “在……期间”; as “正当……的时候”when意为“在……的时候”，强调“特定时间”。
When spring came, he felt like a trip.When he was eating his breakfast, he heard the doorbell ring.说明：连词when在状语从句中还有如下几种含义：①表示突然发生的事，含义为“（正在……时）忽然”。
I was just coming along to see you when I ran into Wilson.I had been working a couple of months when I had a letter from Jane.②表示过早发生某事，意为“（还没……）就”。
此含义有时可用before代替。
I hadn’t been rea ding for half an hour when I heard steps outside.我刚读了不到半个小时就听到外面有脚步声。
I had been there little more than a week when I set to work in earnest.③表示“在……的情况下”，常可译为“虽然”，“既然”，“如果”。
时间状语从句用句子表达一件事情或一个行为发生的时间，这个句子就叫时间状语从句。
时间状语从句根据其所表示的时间不同，所使用的连词也不同。
下面我们一起来看一下几个常见的时间状语从句：1. when引导的从句：表示主句的动作和从句的动作同时发生，或从句的动作发生在主句动作之前。
例如：I was goi ng out whe n a visitor came.( 动词动作同时发生。
)我正要出门，有客人来访。
I shall tell her the good news whe n she comes. 她来时，我将告诉她这个好消息。
小试牛刀：I found mother cooki ng for me. I got home.(when) _____________________________________ He was liste ning to the radio whe n I ____________________ home. (get)2. while引导的从句：表示当……过程中”，强调某一段时间内主句和从句中谓语动词所表示的动作在同一时期发生。
由于while从句表示一个持续的行为，所以从句中要用持续性动词，并且持续性动词常用进行时态。
例如：Keep an eye on my little sister while I am away. 我不在时，请照看一下我的小妹妹。
While we were watching TV, Jim came in. 我们看电视的时候，Jim 进来了。
小试牛刀：It started to rai n. We were playi ng football.(while) _____________________________________ Lucy was clea ning the room __________ Lily was liste ning to music.3. as引导的时间状语从句：表示..... 当........ 的时候；一边一边；随着”，其从句的主语与主句的主语往往是同一人或物。
例如：She sang as she worked. 她一边工作一边唱歌。
=She was singing as she was work ing.I saw him as he was getti ng off the bus. 正当他下公共汽车时，我看见了他。
小试牛刀：_____________ we walked, we talked.You will grow wiser ___________ you grow older.4. before引导的从句：一般表示主句的动作发生在从句动作之前。
例如：I didn ' t know any English before I came here. 我到这儿来之前，一点英语都不懂。
例如：I had written my report before my father came back.小试牛刀：He bought the ticket __________ he went to see the film.5. after引导的从句：表示主句的动作发生在从句动作之后。
例如：After he locked the door, he left. 他锁上门后，就走了。
After he had finished his work, he played a game of chess with his friend. 他做完工作后，和朋友下了一盘棋。
小试牛刀：I will go out to play basketball with you. I finish my homework.(after)He left the classroom __________ he had fini shed his homework the other day.6. since引导的从句：表示自从……以来”，从句中的动词一般表示动作的起点，用过去时。
主句中的动词表示动作延续的情况，一般用现在完成时。
如果主句中的动词表示的不是延续的动作而是表示目前的状态，可用一般现在时。
例如：Since he met this good friend, he has made great progress in his studies.自从遇见了这个好朋友，他已在学习上取得了巨大的进步。
例如：It is twenty years since she joined the Party. 她入党二十年了。
(主句中的动词表示的是状态，用现在时。
)小试牛刀：it is five years since we _______________ last time. (meet)Mr gree n has taught i n that school since he _______________ (come) to China three years ago.7. until引导的从句：表示一个动作持续到某一时刻。
(1)表示直到……”，如果主句中的谓语动词是延续性动词时，用肯定或否定形式都可以，但表达的意思不同。
（2）表示 直到……才”主句用否定式，从句用肯定。
如果主句中的谓语动词是瞬间动词时， 必须用否定形式。
例如：They worked un til it was late.他们一直工作到天黑。
She didn ' t go to bed until she finished her homework. 她写完作业才睡觉。
小试牛刀： All the people left. He waited.(u ntil)He went to bed . his father came home.& as soon as引导的从句表示一 ... 就”强调动作紧密相连。
例如： As soon as she came to the classroom, she began to read English.她一至U 教室，就开始读英语。
小试牛刀： We start to sin g. It''s 12 o"clock. (as soon as) ______________________________________9. by the time至U 。
为止（所在句子的主句应用完成时）例如：By the time he gets there , his father has already gone.他到家的时候，他爸爸已经走了。
小试牛刀：By the time I got to school, the class ______________________ . （begin ）我到校时，已经开始上课了。
知识扩展1. it is +时间段+since+ —般过去时（从。
以来多长时间了）例如：it is five years si nee we met last time. 从我们上次见面已经五年了。
It is reported that it may be two or three months ____ it is possible to test this medici ne on ani malsHow long do you think it will be ______ China sends a manned spaceship to the moon?4、巧记10个瞬间性动词在学习以when 和while 引导的时间状语从句时，用到了瞬间动词和延续动词。
常见的瞬间动词有die （死）,come （来）,go （去），eave （离开）,arrive （到达）,begin （开始）,buy （买）,,join （加入）,borrow （借进，借 出），return （归还）等。
这10个瞬间动词可用两句口诀来帮助记忆 ：开始离去，借来还，出生入死，买到家。
注释：1. "开始离去，借来还"为 begin,leave,go,borrow,come,return 六词；2. "出生入死，买到家"为join,die,buy,arrive 四词。
3. 各词改为相应的延续动词为：begin 宀be on, leave be away from, borrow keep, go be, come be here, returnbe back,2. it is/ will be + 时间段 +before+ 一般现在时 例如：it is a long time before I go to sleep .it was an hour before the police arrived. 小试牛刀：It_______________ (be) ten years since we ______it was+时间段 +before+ 一般过去时（。
才）过了很长时间我才睡着。
过了一个小时，警察才来。
join T be in, die be dead, buy have, arrive be here 等。
5、状语从句与主句的时态问题 1.由when 、while 引导的时间状语从句的时态： （主过从过）+when +从句（一般过去） +when +从句（过去进行时） +while +从句（过去进行时） +while +从句（过去进行时）注意：看动词为短暂性动词用一般过去时，动词为延续性动词则用过去进行时。
小试牛刀： Mother _____________ （ cook ） supper when I ________ （get ） home yesterday.Last Sun day I __________ (meet) Lin Hong whe n I ___________ (walk) in the street. When the students ____________ (have ) a meeting, the teacher ____________ (come) in. While Han Meimei ____________ (sweep) the floor, Lucy ____________(carry) water.2. 由when 、after 、before 、by the time 引导的时间状语从句的时态：主句、从句的谓语动词都已完成，则先发生的动作用过去完成时，后发生的动作用一般过去时。
