状语从句
一．时间状语从句
1.名词类状语从句：
The moment, the minute, the second
例句：I will tell him the minute (that) he gets here. 他一到这里我就会告诉他。
2. 副词类状语从句
immediately, directly, instantly
例句：I will give you an answer immediately if I finish my work.
3.句型类状语从句
1.No sooner…than hardly/scarcely…when
No sooner 过去完成时 than 一般过去式
hardly/scarcely…when同上
No sooner…than hardly/scarcely…when都是否定词
放在句首时需要部分倒装，且后接过去完成时
例句：she had no sooner heard the news than she fainted. No sooner had she heard the news than she fainted.
When的用法除了当…时候，还可表示“这时，突然”。
I was about to go out when the door bell rang.
我刚想出去，突然门开了。
The students were chatting when the teacher came in.
老师进来时，学生们正在聊天。
过去进行时 + when 一般过去时
过去完成时 + when 一般过去式
Was about to + when 一般过去式
2.It will be/was + 一段时间+ before … 还要过多久才…
例句：It will be two years before he leaves the country.他将在两年后离开这个国家。
3.It is/has been + 一段时间 + since…
过去完成时 + since + 一般过去式
It is two years since he was a college student.
他大学毕业有两年了
二．条件状语从句
1.If only 要是…就好了
Only if 只有用陈述语气
2.unless 除非，否则
3.so long as, as long as, on condition that
只要，条件是…
4. in case 万一，如果
Send a message in case you have any difficulty.
5.once 一旦
6.providing/provided that, supposing/suppose that
如果
三．原因状语从句
1.now (that), seeing (that), considering that, for
the reason that, in that
由于，因为
四．结果状语从句
So…that, such…that
So + adj/adv that, such + n + that
So+ adj + a/an +可数名词单数+that
So +many/much/few/litter + 名词 + that
例句：It is so interesting a book that she has read it twice.
这本书很有趣，她读了两遍。
Such a/an + adj +单数+ that
Such adj+ 复数名词/不可数名词 + that
五．让步状语从句
As，although， though，疑问词+ever==No matter + 疑问词， even if， even though
注意：although， though 不可与but连用，但可与yet，still， nevertheless连用
While也可引导让步状语从句
例句：While I understand what you say, I can’t agree with you.
虽然我理解你想说什么，但我还是不同意你。
六．地点状语从句
Where, wherever, everywhere,每个地方 anywhere 任何地方
I’ll go where he went.
I’ll go wherever he goes.
Everywhere they went, they were kindly received.
他们每到一处都受到了友好的接待。
七．目的状语从句
1)为了，目的是
So, so that, in order that, for the purpose that
2)唯恐，以防
In case, for fear that, lest…
常与情态动词 can, could, may, might, should, would连用
练习:
八．方式状语从句
As（像..一样，正如，按照），
例句：you must do the exercises as I show you 你必须照我说的做练习
(just) as…so… 正如…一样，…也…
例句：As water is to fish, so air is to man.
我们离不开空气，犹如鱼儿离不开水。
正如鱼离不开水一样，我们也离不开空气。
例句：Just as we sweep our rooms, so we should sweep backward ideas from our minds.
正如打扫房间一样，我们也要扫除我们头脑落后的东西。
As if/ though; 似乎，好像；
可能性大, 陈述语气
It looks as if the weather may pick up very soon. 看来天气很快就会好起来
可能性小用虚拟语气
现在一般过去式
过去 Had done
将来 would/could/might do
He talks about Rome as if he had been there before. 他谈论罗马就好像他之前去过哪似的
九．比较状语从句
1)As…as, not as/so…as不如
2)Than
3)T he more… the more…
翻译：
1.他好像生病一样(虚拟)
He looks as if he were ill.
2.我刚合上眼，电话铃就响了
I had no sooner closed my eye than the telephone rang. 或者
No sooner had I closed my eye than the telephone rang.
他正在做噩梦，突然一声喊叫醒了他
He was having a nightmare when he was awakened by a cry
He was having a bad dream when a shout woke him up. 他们很早就出发目的是可以准时到达
They set out early so that they might arrive on time. 如果你不快点儿，会误了火车的。
You will miss the train unless you hurry up.
咼中英语状语从句 定义: 在句中作状语的从句是状语从句，修饰主句中的动词、形容词或副词等.状语从句由从属连词引导，从属连词在句中不充当句子成分，只起连接作用，状语从句放在句首时，要用逗号，放在句 尾时不用. 分类 根据意义上的不同，状语从句可分为：①时间状语从句②地点状语从句③原因状语从句④ 目的状语从句⑤条件状语从句⑥结果状语从句⑦让步状语从句⑧方式状语从句⑨比较 状语从句三、时间状语从句主句是一般将来时，时间状语从句用一般现在时表将来；主句是—过去将来时，从句用一般过去时表示过去将来时；主句是一般过去时忆：“主将 ，从句用一般过去时.记从现” (一)引导时间状语从句的连词有：As，whe n (whe never)，before，after，as soo n as，un til (till)，since，every time，once. | （二）、具体应用1）“while ”主、从句动作或状态同时发生.用while引导的从句用延续性 动词，常表示较长的时间或一个过程.记忆：While 后用进行时.While we were having supper， all the lights went out. Please kee p quiet while others are study in g」 While I was writing letters last night，he was watching TV. 2 ）When 表示“就在”的时候"， while 意为反而，可是，表示转折.One evening Beethoven was walking in a street，when he sudde niy stopped outside a little house. 3）When ever无论什么时候，随时 1.When ever some one throws in some rubbish，the truck p roduees a pi eee of music. 每当有人扔进一些垃圾时，它（汽车）就放一段音乐 2.When ever we' re in trouble，they will help us. 3.I go to the theatre, whe never I am free. https://www.doczj.com/doc/f44837357.html,e and see me whe never you want to.你随时来看我 4) till和until(表示"直到” ”)句首多用until | 1在肯定句中表示“直到”为止”，主句谓语动词要用延续性动词 I was wait ing un til/till he arrived. 2、在否定句中表示“直到，，才”主句谓语动词常用终止性动词，这时until和till常被before 替换. I did n' t leave till/un til she came back. 5) si nee:主句用完成时，从句用一般过去时，si nee引导的从句间或可用现在完成时 It is two years since I have studied En glish. 1.We have known each other si nee we were childre n. 2.We have bee n friends （ever sin ce） since we met at school. 3.It is ”（一段时间）+since+—般过去时态句子 It is two years since my sister married. I
中考语法专题条件状语从句（讲解+练习，无答案）
条件状语从句
常用引导词：if, unless, as/so long as
1、if 从句 + 祈使句，“如果……，就……”
If you do not feel well, please go to see the doctor. 如果你感觉不舒服，就去看医生 吧。
If you want to know more about it, call now. 如果你想了解更多内容，现在就打电话 吧。
Make sure you visit the Science Museum if you ever go to London. 如果你去伦敦，一 定要去参观科学博物馆。
2、主将从现
If I start after dinner, I’ll finish it before I go to bed. 如果我晚饭后开始，睡觉前我就能 完成。
主句也可用“情态动词 + 动词原形” She may come with us if she arrives in time. 如果她来得及时，就可以和我们一起去。
3、if 条件状语从句和并列句的转换
Hurry up, or you’ll be late. = If you don’t hurry up, you’ll be late. Study hard and you will pass the exam. = If you study hard, you will pass the exam. 练习 （一）句型转换 1. Run fast, or you’ll be late for school. _______ you _______ _______ fast, you’ll be late for school. 2. You can buy the dictionary if you take enough money with you. Take enough money with you, _______ _______ _______ buy the dictionary. 3. If there is no air, none of us can live. None of us can live _______ _______.
4、unless “除非”
Don’t leave the building unless I tell you to. 不要离开大楼，除非我准许。 Unless you have finished your homework, I won’t allow you to watch TV. 除非你已完成 了作业，否则我是不会让你看电视的。 unless = if not You’ll be late if you don’t hurry. = You’ll be late unless you hurry. I can’t catch the train if I don’t get up early. = I can’t catch the train unless I get up early.
练习
t 条件状语从句 一、 条件状语从句通常由 if （如果）, unless （除非），as long as （只要）引导。 例如：If it rains tomorrow, we won ’go to the park. 如果明天下雨，我们就不去公园了。 Unless weather stops me, I go for a walk every. 我每天都会去散步，除非遇上坏天气。 Our parents will be pleased with our performance as long as we try our best. 小试牛刀：1、只要我们竭尽全力，父母就会满意我们的表现。 Our parents will be pleased with our performance _____ _____ ______ we try our best. 2、如果人人为保护环境做出贡献，世界将会变得更美好。______ ______ ______ _____ _______ to protecting the environment, the world will become much more beautiful. 二、if 引导的条件状语从句 （1）“if 从句+祈使句”的句子。其实，if 作为一个连词，主句也可以是其他形式的句子。 例如：If you want to go, please let me know. If the green light isn ’t on, wait for a minute. (2)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。 注意：A. “祈使句 + and + 陈述句”可以转化为 if 引导的肯定条件状语从句，而且主语是第二人称。 B. “祈使句 + or + 陈述句”可以转化为 if 引导的否定条件状语从句，而且主语是第二人称。 例如：Study hard and you will pass the exam. =If you study hard, you will pass the exam. Hurry up, or you ’ll be late. =If you don ’t hurry up, you ’ll be late. 考题 (2010 重庆中考)Work hard ，________ you may catch up with your classmates soon. A.or B.but C.and D.yet 思路解析：本句是“祈使句＋and”的句型，句意为“努力学习，你会很快赶上其他同学的”，and 在句中表示承接 关系，所以选 C 项。答案：C 黑色陷阱：本题的陷阱是句型，本句型区别于“祈使句＋or”，这个句型的含义是“……，不然的话/否则……”。 绿色通道：祈使句后面既可以加 and ，也可以加 or ，所以要全面分析句意，再作决定。 小试牛刀：用 if 连接下列句子 1、Go to bed early and you will have a good rest. 2、Hurry up, or you ’ll miss the bus. 三、if 从句与主句具有以下特点： 1．If 从句中用一般现在时，表示未来的一种条件，从句中可以加时间状语。 e.g.If yo u can’t come tomorrow, we can hold the party a little later.明天你如果不能来，我们可迟一点举行宴会。
条件句从句主句 真实一般现在时一般将来时 情态动词+动原祈使句 非真实 一般过去时 be动词用（were） would/could+动原初中英语――条件状语从句（讲解&练习） Ⅰ条件状语从句的定义 Ⅱ条件状语从句的引导词 1.if引导的条件状语从句：表示在某种条件下某事很可能发生。 If we pay much attention to the earth, we'll have a better world. 如果我们多关爱地球，就会拥有一个更美好的世界 If it rains tomorrow, what shall we do? 如果明天下雨，我们怎么办？ 注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。 What would happen if there were no water ? 如果没有水会怎样？ 2.unless引导的条件状语从句，unless的意思是如果不，除非。可与if...not互换。 You will fail in English unless you work hard. 你英语考试会不及格的，除非你更加努力。 3.as /so long as引导的条件状语从句：as /so long as意思是“只要” So long as you're happy,i will be happy. 只要你高兴，我就高兴。 Ⅲ条件状语从句的种类 Ⅳ条件状语从句的时态原则 用法例句 ①主句为一般将来时态，if从句用一般 现在时态（即主将从现）。We will stay at home if it rains tomorrow. 如果明天下雨，我将要呆在家。 ②主句中含有情态动词，if从句用一 般现在时态。If you finish your homework, you can go home now.如果你做完了作业，你现在可以回家了。 ③主句为祈使句，if从句用一般现在 时态。Don’t jump into the river if you feel very hot. 如果你感到很热，不要跳入河里。 ④主句为过去将来时，if从句用一般 过去时态（如果涉及到be动词， 一律都用were）。此时，表达的是和现实相反的推测，用虚拟语 气。If I were you, I wouldn’t do it like that.如果我是你，我就不会那么做的。 If you gave me some money, I would be very happy. 如果你给我一些钱，我就会很高兴的。 二、if 引导的条件状语从句 （1）“if 从句+祈使句”的句子。其实，if 作为一个连词，主句也可以是其他形式的句子。 例如：If you want to go, please let me know. (2)“祈使句 + and (or)+ 陈述句”
初中英语：条件状语从句 一．条件状语从句的概念 条件状语从句，即在某种条件下，一件事情可能发生。在英语中由连接词if或unless等 引导的状语从句叫做条件状语从句。条件是指某一件事情实现之后（状语从句中），一件事 情（主句）才能发生，通常译作“假如，只要，如果”等意思。条件状语从句中，主从句的时 态要遵循“主将从现”的原则。即，主句是将来时态时，从句用一般现在时代替将来时态。 二.条件状语从句的引导词 1.If conj . 如果，假如 If you ask him，he will help you．如果你请他帮忙，他会帮你的。 If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。 2.unless conj.除非,若不,除非在……的时候（if ...not...） You will fail to arrive there in time unless you start earlier. 如果你不早点动身,你就不能及时赶到那儿。Unless it rains, the game will be played. 除非下雨,比赛将照常进行。 3.so/as long as conj.只要 You may borrow my book as long as you keep it clean. 只要你保持书的清洁，你就可以把我的书借去。 三．关于条件句的时态，常见的有以下三种情况： 1、条件状语从句的主句是一般将来时，那么从句常常用一般现在时。 When I grow up, I’ll be a nurse and look after patients. 我长大后要当一名护士，照顾病人。 2、如果主句是祈使句，那么从句通常要用一般现在时。 If you want to have a chat ,call me up. 如果你想聊天，打我电话。 3、如果主句是含有情态动词时，根据需要从句多用一般现在时。 You should be quiet when you are in the reading room. 在阅览室时应保持安静。 四．知识拓展 1在以when，before，as soon as等引导的时间状语从句，也适用“主将从现”原则，即如果主句是一般将来时，从句则用一般现在时。 I'll tell her the good news when she comes back. 当她回来的时候，我将把这个好消息告诉她。 she will give you a call as soon as she returns. 她一回来就会给你电话。 2.If条件句的同义句：祈使句，and /or+将来时态的陈述句。 Work hard ,and you will make great progress.= If you work hard,you will make great progress. 如果你努力学习，你才会取得大的进步。 Hurry up, or you will be late.=If you don’t hurry up.you will be late.如果你不快点，你就要迟到了。
（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While I was standing at the window, I saw several boys 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。While John was watching TV, his wife was cooking. 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。主句与从句的动作时 间关系与before引导的从 句相反。With many hungry visitors waiting, don’t stay too long at your table after you have finished. If an early exit is necessary, you can leave after a scene is over. 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 “就，才”。当主句用将来时，You can’t watch TV before you finish your homework. Before it ended, the theatre was almost empty. My father had left for Canada
if 引导的条件状语从句（讲义） 状语 用来表示行为发生的时间、地点、目的、方式、程度等，通常由 副词或介词短语充当，也可由一个句子充当。 I slept at home yesterday because I had a bad cold. 状语从句 状语从句指句子作状语。 根据其作用可分为时间、地点、原因、条件、目的、结果、让步、 方式等从句。 状语从句一般由连词（从属连词）引导。 I will go to school by bike tomorrow if it is sunny. Grammar focus —I think I ' ll take the bus to the party. —If you do, you ' ll be late. If you take the bus to the party, you —I think I ' ll stay at home. —If you do, you ' ll be sorry. If you stay at home, you ' ll be sorry. —What will happe n if they have the party today? ——If they have it today, half the class won —Should we ask people to bring food? —If we ask people to bring food, they and chocolate. 1 if 在本单元句中意为“ _______________ ； _______ ”，用于引导 即if 引导的是一个完整的句子，所以一定要有主谓，成为从 句，另一个句子则成为主句。 If you go there, I ' ll go, too. We will go hiking if it doesn ' t rain tomorrow. If Bob leaves tomorrow, I will hold a party for him toni ght. 2 if 引导的条件状语从句既可以放在主句前，也可放在主句后。 但是如果放在主句前，即句首时，从句后面要用 与主句 隔开。 You will keep healthy if you do more exercise. If you do more ll be late. t come. ll just bring potato chips
状语从句 状语从句修饰主句/主句的谓语。一般有九大类：表示时间、地点、原因、目的、结果、条件、让步、比较和方式等。 时间状语从句 1. 用when引导：when表示“当……时候”。如： Things were different when I was a child. 我小时候情况与现在不同。 People breathe more slowly when they are asleep. 人睡觉时呼吸比较缓慢。 2. 用while引导：while表示“当……时候”。如： We must strike while the iron is hot. 我们要趁热打铁。 I went swimming while the others played tennis. 我去游泳，其余的人都打网球去了。 注意：while 所引导的时间状语从句中谓语动词必须是持续性的，不能是短暂性的。 3. 用as引导：as表示“当……时候”“随着”。如： He dropped the glass as he stood up. 他站起来时，把杯子摔了。 We get wiser as we get old. 随着年岁的增长，我们也变得聪明些了。 4. 用before引导：before表示“在……之前”。如： Turn off the lights before you go to bed. 睡觉前要关灯。 Before he went to university he was a worker. 上大学之前他是工人。 5. 用after引导：after表示“在……之后”。如： I will tell you after they leave. 他们走我再告诉你。 After you finish the letter show it to me．信写完后给我看看。 6. 用until / till引导：until / till表示“直到……”。如： He waited until she was about to leave. 他等着一直到她准备离开。 I watched him until he disappeared in the distance. 我瞧着他直到他在远处消失。 这类句型的主句动词通常只能是延续性动词，不能是终止性动词。但是，在否定句中，主句动词可以是终止性动词，此时构成not…ntil [till]…句式，意为“直到……才……”。如：
条件状语从句讲解 ――if引导的条件状语从句（注意&练习）在句子中做条件状语的从句称为条件状语从句。可置于句首、句尾，有时还可置于主语和谓语之间。引导条件状语从句的连接词有：if ,unless,as/so long as等 1.if引导的条件状语从句 表示在某种条件下某事很可能发生。 If we pay much attention to the earth, we'll have a better world. 如果我们多关爱地球，就会拥有一个更美好的世界 If it rains tomorrow, what shall we do? 如果明天下雨，我们怎么办？ 注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。What would happen if there were no water ? 如果没有水会怎样？ 2.unless引导的条件状语从句 unless的意思是如果不，除非。可与if...not互换。 You will fail in English unless you work hard. 你英语考试会不及格的，除非你更加努力。 3.as /so long as引导的条件状语从句 as /so long as意思是“只要” So long as you're happy,i will be happy. 只要你高兴，我就高兴。 4.once引导的条件状语从句 once引导的条件状语从句，意为“一旦...，就”，从句可置于主句前或后 Once you begin,never stop. 一旦开始，就绝不要停止 Maths is easy to learn once you understand the rules. 一旦你理解了规则，数学就不难学了。
初中英语――if引导的条件状语从句 引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。如： If you ask him，he will help you．如果你请他帮忙，他会帮你的。 If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。 If you have finished the homework，you can go home．如果你作业做完了就可以回家了。 另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。如： If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。 I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。 另外你还要注意if 条件句的时态搭配 1．if从句用一般现在时，主句用一般将来时 If he runs he’ll get there in time. 如果他用跑的，他就会及时赶到那儿。 The cat will scratch you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。 2．．if从句用一般现在时，主句用may/might/can If the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。 If it stops snowing we can go out. 如果雪停了，我们就可以出去。 3．if从句用一般现在时，主句用must/should If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。 4．if从句用一般现在时，主句用一般现在时 If you heat ice it turns to water. (也可用will turn)如果把冰加热，它就会化成水。 5．if从句用现在进行时，主句用一般将来时 If you are looking for Peter you’ll find him upstairs. 如果你是在找彼得，上楼就会找到他。 6．if从句用现在完成时，主句用一般将来时 If you have finished dinner I’ll ask the waiter for the bill. 如果你吃完了，我就叫服务生来算账
1．常用引导词：if（如果），unless（除非）。 I won’t go to the movies unless I am free tomorrow. 除非我明天有空，否则我不会去看电影。 2．条件状语从句的位置 可放在句首或句尾，放在句首时常用逗号与主句隔开。 it rains tomorrow, I will stay at home. = I will stay at home if it rains tomorrow. 如果明天下雨我就呆在家里。 3．if引导词用法 if引导的条件句有：真实条件句和非真实条件句两种。 真实条件句：表示在某种条件下某事很可能发生。 you ask him, he will help you. 如果你请他帮忙，他会帮你的。 4．unless引导词用法 固定搭配：unless=if...not 除非，若不，如果不 will fail to arrive there in time unless you start earlier. =If you don’t start earlier, you will fail to arrive there in time. 如果你不早点动身，你就不能及时赶到 那儿。 注意：在含有条件状语从句的复合句中，当主句是一 般将来时态，从句要用一般现在时（即主将从现原 则）。如果主句是祈使句或含有情态动词时，从句也 用一般现在时表将来。
you study hard, you will pass the exam. 1. I will send you an e-mail as soon as I ____ A___ in Canada. A. arrive B. arrived C. am arrivi ng D. will arrive 2. If there ____A___ no buying and selling of an imals, there ______ no killing in nature. A. is; will be B. will be; will be C. is; is D. will be; is 3. I’m waiting for my , I'll go shopping alone. A. If she comes B. If she won't come C. If she doesn't come 5. You can’t watch TV ___A_____ you finish your homework. A. unless B. if C. while D. as students _____A___ have a sports meeting this we
状语从句讲解和练习状语修饰动词、形容词、副词或整个句子。通常由副词、介词短语、动词不定式、分词和从句等担当。例如：1. Nat urally , our grandparents wer e pleased to get our phone call . (副词)2. We worked ha rd , from sunrise to sunset . (介词状短语)3. To help my d isabled aunt , I spend an ho ur working in her house ever y day . (不定式)4. Seen from a distance , the farmhouse l ooked deserted . (过去分词)
5. I know how to light a ca mp fire because I had done it before .（原因状语从句）状语的位置比较灵活，可以位于句首、句末或句中。enough用作状语修饰形容词和副词时必须后置。 状语从句主要用来修饰主句或主句的谓语。一般可分为九大类，分别表示时间、地点、原因、目的、结果、条件、让步、比较和方式。尽管种类较多，但由于状语从句与汉语结构和用法相似，所以理解和掌握它并不难。状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。现分别列举如下:1．时间状语从句常用引导词：when, as, while, as soon as, while, before, after, since , ti ll, until特殊引导词：the minute, the moment, the sec ond, every time, the day，the instant, immediately , directly, no sooner … than, hardly …when, scarcely
条件状语从句 条件状语从句是一种比较常见的状语从句，引导条件状语从句最常用的连词是 if, 由if引导的条件状语从句表示在某种条件下某事很可能发生。如： If you ask him, he will help you. 如果你请他帮忙, 他会帮你的。 If you fail in the exam, you will let him down. 另外, if从句还表示不可实现的条件或根本不可能存有的条件, 也就是一种虚 拟的条件或假设, 从句多用一般过去时或过去完成时。如： If I were you, I would invite him to the party. I would have arrived much earlier if I had not been caught in the traffic. 如果没有堵车, 我会到的早一点儿。 其他的连词： 1.unless conj. 除非, 若不, 除非在…的时候 You will fail to arrive there in time unless you start earlier. 如果你不早点动身, 你就不能即时赶到那儿。 Unless it rains, the game will be played. 除非下雨, 比赛将照常实行。 2. on condition (that)...在……条件下, 如果; on condition (that)...引 导的条件从句是主句事件发生的前提条件或唯一条件。 I can tell you the truth on condition that you promise to keep a secret. 我能够告诉你真相, 条件是你答应保守秘密。 You can go swimming on condition (that) you don’t go too far from the river bank. 你只有在不远离河岸的条件下才能够下水游泳。 3. supposing conj. 如果, 假如 supposing引导的条件从句表示一种假设条件 Supposing it rains, shall we continue the sports meeting?
条件状语从句练习精讲（含答案） 1---5 CDBAD 6---10 DAACB 11---15 CBCBC Ⅰ.单项选择 1. If you _____ to the party, you’ll have a great time. A. will go B. went C. go D. going 2. It will be a long time ____ Peter _____ his work. A. since, has finished B. after, finishes C. when, will finish D. before, finishes. 3. What will father _____ us from Japan? A. take B. bring C. carry D. make 4. Weifang is famous ______ kites A. for B. to C. on D. with 5．I ____ her the answer if she ____me. A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks 6. – What are you going to do tomorrow? --We’ll go to the library tomorrow if it ___. A. isn’t rain B. rain C. won’t rain D. doesn’t rain 7.—Do you know when he will come back tomorrow? --Sorry, I don’t know. When he ____ back, I’ll tell you. A. comes B. will come C. come D. may come 8. What will you do if you _____ to the old folk’s home visit? A. go B. went C. going D. will go 9. If I eat ____ food, I’ll be very fat. A. too many B. many too C. too much D. much too 10. I’ll give the book to him if he ___ here next Sunday.
句子成分之——－状语的具体讲解（十）方式状语 具体用法：方式状语 导读：方式状语，描述动作、事件或情况发生及存在的方式。其表达方式通常有： 1. 方式副词（介绍了常用副词） 2. 介词短语（区分了by，through, in, with四个表方式的介词用法） 3.形容词短语 4. 方式状语从句 （1）as if/as though （2）as/like (just) as…so…表示“正如”、“像……”。 （3）(in) the way (that) 引导的方式状语从句“以…方式” （一）方式副词，用来回答how 提出的问题。常见的此类副词主要有：angrily 生气地anxiously 焦急地badly 糟糕地 calmly 冷静地carefully 仔细地carelessly 粗心地 clearly 清晰地closely 紧密地dangerously 危险地 eagerly 热心地effectively 有效地faithfully 忠诚地 firmly 坚定地happily 高兴地nervously 紧张地 suddenly 突然地thoroughly 完全地uncomfortably 不舒适地 well 很好地widely 广泛地willingly 情愿地 方式副词，等于介词短语“in a +形容词+ way”。 例如：angrily 等于in an angry way Some Internet words are widely used and spread.有些网络语言被广泛地使用和传播。 Volunteers always help others eagerly.志愿者们总是热心地帮助他人。 Can you speak it clearly?你能清楚地讲一下它吗？ A dog came out from behind the door suddenly.一只狗突然从门后跑了出来。 （二）介词短语，常见的有：in, by...,with..., through...等。 1. by的用法 （1）by+n/动词ing表示“通过……方式” The blind learn something by touching. 盲人通过触摸学习东西。
初中英语条件状语从句语法详解 (名师剖析语法知识点+ 实战训练题，值得下载打印) 一．条件状语从句的概念 条件状语从句，即在某种条件下，一件事情可能发生。在英语中由连接词if或unless等 引导的状语从句叫做条件状语从句。条件是指某一件事情实现之后（状语从句中），一件事 情（主句）才能发生，通常译作“假如，只要，如果”等意思。条件状语从句中，主从句的时 态要遵循“主将从现”的原则。即，主句是将来时态时，从句用一般现在时代替将来时态。 二.条件状语从句的引导词 1.If conj . 如果，假如 If you ask him，he will help you．如果你请他帮忙，他会帮你的。 If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。 2.unless conj.除非,若不,除非在……的时候（if ...not...） You will fail to arrive there in time unless you start earlier. 如果你不早点动身,你就不能及时赶到那儿。Unless it rains, the game will be played. 除非下雨,比赛将照常进行。 3.so/as long as conj.只要 You may borrow my book as long as you keep it clean. 只要你保持书的清洁，你就可以把我的书借去。 三．关于条件句的时态，常见的有以下三种情况： 1、条件状语从句的主句是一般将来时，那么从句常常用一般现在时。 When I grow up, I’ll be a nurse and lo ok after patients. 我长大后要当一名护士，照顾病人。 2、如果主句是祈使句，那么从句通常要用一般现在时。 If you want to have a chat ,call me up. 如果你想聊天，打我电话。