最新时间状语从句(全面掌握)教案资料
状语从句
思考：什么是从句？
I don’t know the girl in red.
I don’t know the girl who is playing under the tree.
从句要素：① 至少要有两个句子
② 要有引导词
一、什么是状语从句
状语的功用：状语说明地点、时间、原因、目的、结果、条件、方向、程
度、方式和伴随状况等。
状语一般由副词、介词短语、分词和分词短语、不定式或相当于副词的词或
短语来担当。其位置一般放在句末，但也可放在句首或句中。
I didn’t realize how special my mother was until I became an adult.
You should have put the book where you found it.
I didn’t go because I was afraid.
二、状语从句的分类
1.时间状语从句
2.地点状语从句
3.原因状语从句
4.条件状语从句
5.目的状语从句
6.让步状语从句
7.比较状语从句
8.方式状语从句
9.结果状语从句10.伴随状语从句
▲ 常见考点：
考点一、主句与从句的时态呼应问题；
考点二、连接词的选择。
考点三、状语从句与非谓语动词之间的替换；
考点四、根据从句与主句的逻辑关系选用从属连词；
3、时间状语从句详解
1.引导词
（1）基本类：
before ,after ,when ,while ,as ,since ,till ,until ,once ,as soon as.
（2）名词类：（由名词词组充当引导词）
the moment ,the minute ,the second ,the instant ,(一…就…)
every time ,each time ,the first time ,the last time
（3）副词类：（由副词充当引导词）
immediately ,directly ,instantly (一…就…)
（4）句型类：
no sooner…than… ,hardly/scarcely…when…（一…就…）
2.引导词具体讲解：
当…时候：It was six o’clock when I got home.
Sb was doing sth when…
1)when 这时 Sb was about to do sth/was on the point of doing sth when…
Sb had just done sth when…
既然: It was foolish of you to take a taxi when you could walk there in five minutes.
既然你能5分钟就走到那儿，再搭出租车真是太傻了。
当…时候(引导持续性动作): He fell asleep while he was reading a book.
2) while 然而(用于句中) : He likes pop music while I am fond of folk music.
虽然,尽管(用于句首) While volleyball is her main focus, she’s also great at basketball.
当…时候;随着 He smiled politely as Mary apologized for her drunken friends.
3) as 因为You can’t continue with the training as you haven’t recovered from the injury.
尽管 Hot as/though the night air was, we slept deeply because we were so tired
after the long journey.
正如,正像 The air quality in the city, as is shown in the report, has improved in the last two months.
肯定句:主句的谓语动词必须是延续性动词。He worked until late into the night.
4)till, until
否定句：主句的谓语动词是非延续性动词。
not…until 的倒装句式和强调句式
He didn’t consider having a holiday until he retired from teaching three years ago.
倒装句式：Not until he retired from teaching three years ago did he consider having a holiday.
强调句式：It was not until he retired from teaching three years ago that he considered having a holiday.
if引导的条件状语从句讲义及答案
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
(完整版)初中条件状语从句精讲和练习含答案
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。
高中英语必修二状语从句教案
一地点状语从句 地点状语从句通常由where, wherever 引导。 Where I live there are plenty of trees.我住的地方树很多。 Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。 二. 方式状语从句 方式状语从句通常由as, (just) as…so…, as if, as though引导。 1）as, (just) as…so…引导的方式状语从句通常位于主句后，但在(just) as…so…结构中位于句首，这时as从句带有比喻的含义，意思是"正如…"，"就像"，多用于正式文体，例如：Always do to the others as you would be done by.你希望人家怎样待你，你就要怎样待人。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。 Just as we sweep our rooms, so we should sweep backward ideas from our minds. 正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。 2）as if, as though 两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如： They pletely ignore these facts as if (as though) they never existed. 他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。） He looks as if (as though) he had been hit by lighting. 他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。） It looks as if the weather may pick up very soon. 看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。） 说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如： He stared at me as if seeing me for first time.他目不转睛地看着我，就像第一次看见我似的。He cleared his throat as if to say something.他清了清嗓子，像要说什么似的。 The waves dashed on the rocks as if in anger.波涛冲击着岩石，好像很愤怒。 三. 原因状语从句 比较：because, since, as和for 1）because语势最强，用来说明人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或since。 I didn't go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2）由because引导的从句如果放在句末，且前面有逗，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today. 四. 目的状语从句 表示目的状语的从句可以由that, so that, in order that, lest, for fear that, in case等词引导，例如：
高考英语复习 状语从句讲解
状语从句一什么是状语从句 二状语从句位置 三状语从句分类 四特殊句式 五状语从句常见考点 六练一练
一什么是状语从句 状语从句是行使状语功能的从句，因为其作用相当于副词，它可以用来修饰谓语、定语、状语或整个句子。状语从句通常由一个连接词或起连接词作用的词组引导。 二状语从句位置 比较灵活，有时可以放于句首，有时可以置于句末。状语从句位于句首时，其后常用逗号与后面的句子隔开。 三状语从句分类
让步状语 though, although, even though, while whether ，whoever/no matter who ，whatever/ n o m atter w hat ，whenever/ no matter Even t hough y ou s ay s o, I d o n ot believe it. 比较状语 than as …as ，the more … the more The m ore I s ee him , t he l ess I l ike h im. 方式状语 as, as if , as though He t old m e e verything a s i f I w ere h is best friend. 四 特殊句式 时间状语中 A:It + b e +时间点+ w hen …… 当某事发生时是什么时候 It was 11:00 PM when he came back last night. B:It i s/has b een +时间段 + s ince …… 自从某事发生后已过了多久时间 It i s /has b een t wo y ears s ince I e ntered t he t he s enior s chool. C:It + be +时间段 + before …… 在某事发生之前需要多久时间 It was 8 years before we finally drove away the Japanese invaders. It m ight b e a l ong t ime b efore C hinese l and o n t he m oon. 让步状语从句 A: as 引导的让步状语从句， 从句的表语、状语必须前置到句首。 Short as he is, he plays basketball very well. Child as he is, he is knowledgeable. （开头 0 冠词的用法） 1 2
初中英语——条件状语从句
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状语从句教案
TheAdverbialClauses 抚宁一中王艳 I.Teachingtopic：TheAdverbialClauses II.Teachingtype：Grammar III.TeachingObjectives: 1Inknowledge： Enhancestudents’proficiencyandaccuracyinusingthe adverbialclauses. StepI ooseonekindoftheclausesandanswerquestionstogetpoints. 1.AdverbialClausesofTime(时间状语从句) 1）Askstudentstodomultiple-choicetoknowthedifferenceamong“when”,“while”and“as”. 2)Askstudentstothinkaboutotherconjunctionsandwritesentencesbythemselves.Thenaskst udentstocorrectmistakesbythemselvesandexplaintheimportantanddifficultpoints. 3)Askstudentstotranslatethreesentencestoknowdifferentmeaningsof“before” 2.AdverbialClausesofConcession(让步状语从句) 1）Askstudentstofillintheblanksaccordingtothepicture. 2)Askstudentstodomultiple-choicetoacquiretheimportantpoints. 3.AdverbialClausesofManner(方式状语从句)
(完整)高中英语-状语从句练习题及答案详解
状语从句练习题 1.I had been looking for the book for two days____ I found it at last. a.until b. when c. before d. while 2.He punished his students ____ they did anything wrong. a.however b. whenever c. whatever d. whichever 3.Those passengers will wait here____ the bus arrives. a.until b. because c. though d. as 4.Hardly had we reached home ____ it began to rain. a.before b. than c. as soon as d. when 5.No sooner had we arrived at the cinema___ the film began. a.than b. before c. when d. as soon as 6.You can’t watch TV ____ you’ve finished your homework. a.since b. until c. as d. after 7.We had scarcely left our school____ the rain began. a.before b. than c. while d. when 8.We have never seen her again_____ she went to work in another city. a.when b. as c. since d. while 9.____ the fight stopped, travel across the country has been quite safe. a.Since b. When c. After d. Unless 10.They were just about to leave____ the telephone rang.
教学设计IF引导的条件状语从句
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初中英语——If引导的条件状语从句
初中英语――if引导的条件状语从句 在主从复合句中修饰主句中的动词、形容词、副词等的从句叫做状语从句，状语从句一般可分为时间状语从句、地点状语从句、原因状语从句、目的状语从句、结果状语从句、条件状语从句、让步状语从句、比较状语从句和方式状语从句九种。 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。 提示：在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替过去将来时。 If the weather is bad next week, we'll put off the climbing. 如果下周天气不好，我们将推迟爬山。 Father told me if i worked hard he would buy me a gift. 爸爸告诉我，如果我努力学习，他会给我买一份礼物。
初中英语If引导的条件状语从句演示教学
初中英语――if引导的条件状语从句 在if 引导的条件状语从句中，if 和条件句位置灵活，可直接放在主句后面，若if 条件句放句首，从句后面要加逗号，和主句隔开。还要注意前后时态一致原则.引导条件状语从句的连接词主要有：if(如果）、unless（除非）或as long as （只要）等。unless在意思上等于if...not。 一、条件状语从句用法 1、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. 如果你考试不及格,你会让他失望的。 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。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。 2、unless = if...not.除非,若不,除非在……的时候 例如：Let's go out for a walk unless you are too tired. =If you are not too tired, let's go out for a walk. Unless it rains, the game will be played. 除非下雨,比赛将照常进行。 二、时态问题 在条件状语从句中，要注意“主将从现”的规定，即主句用一般将来时，从句用一般现在时表示将来时。例句： I will come to see you if I have time. 我有时间，我就来看你。 三如果if 条件句谈论的是重复发生和预示要发生的情景和事件，则主从句大多用一般现在时态。如： If bears are in danger ,they attack people. 误区提醒 if 既可以引导条件状语从句，表示“如果”，也可以引导宾语从句，表达“是否”。辨别它在这两种从句中的时态是我们经常容易出错的地方。另外，if 和unless的用法也需注意。 典型例题：----I wonder if your wife to the party. ----If your wife _________, so will mine。. A. will go，go B. will go, goes C.goes, will go D. will go, will go 解析：第一句中if表示“是否”，引导宾语从句，用将来时will go；第二句“如果你的妻子去，我的妻子也去”，if引导条件状语从句，用一般现在时表示将来时。your wife，单三人称主语，所以用goes 。
高中英语状语从句讲解汇总
高中英语状语从句讲解汇总 原因从句 除了下面A2，A3中所示各种类型外，这两种从句均可由as或because来引导。但是用as引导原因从句较为稳妥（参见A）；用because引导结果／原因从句较为稳妥（参见B）。 A 原因从句 1 由as／because／since 引导的原因从句： We camped there as／because／since it was too dark to go on． 我们在那里露宿是因为天太黑，不能再继续往前走了。 As／Because／Since it was too dark to go on，we camped there． [ 因为天太黑不能再继续往前走，我们就在那儿露宿了。 2 in view of the fact that可用as／since／seeing that来表示，但不能用because： As／Since／Seeing that you are here，you may as well give me a hand． 既然你在这儿，你就帮我个忙吧。 As／Since／Seeing that Tom knows French，he’d better do the talking． 既然汤姆懂法语，最好让他来谈。 3 在as／since／seeing that意指以前共知的或共知的陈述时，可用if来代替： ~ As／Since／Seeing that／If you don’t like Bill，why did you invite him 既然／如果你不喜欢比尔，你为什么邀请了他 注意：if so的用法： —I hope Bill won’t come． —If so（＝If you hope he won’t come），why did you invite him —我希望比尔别来。 —如果这样（=如果你希望他不来），你为什么邀请了他 关于if＋so／not，参见第347节。 ~ B 结果从句由because或as引导： The fuse blew because we had overloaded the circuit． 保险丝烧断了，因为我们使线路超载了。 He was angry because we were late． 他生气是因为我们来晚了。 As it froze hard that night there was ice everywhere next day． 因为那天晚上冷得厉害，所以第二天到处都是冰。 ~ As the soup was very salty we were thirsty afterwards． 因为这汤很咸，后来我们渴得厉害。
条件状语从句初二英语
2015-12-20 条件状语从句 1、定义 由引导词if或unless引导的状语从句叫做条件状语从句。在英文中，条件是指某一件事情实现之后(状语从句中的动作)，其它事情(主句中的动作)才能发生，通常译作"假如"。(注意:在含有条件状语从句的复合句中，表示将来时态，主句是态,或谓语动词是，从句要用态,即[原则]。 Eg1: Take the medicine, you will be fine. Eg2: If you can read as many English books as possible, your English will be improved. 2、用法 语法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if引导的条件状语从句既可以将从句放前面也可以将从句放后面。除了if 之外，还有其他连词也可以引导条件状语从句。 【注：在条件状语从句中，绝大数情况下some要变为any。】 (1) unless conj.除非，若不，除非在……的时候 Eg1: You will fail to arrive there in time unless you start earlier.如果你不早点动身，你就不能那儿。 Eg2: Unless it rains, the game will be played.除非下雨，比赛将照常进行。 (2) on condition(that)...在……条件下，如果on condition (that)...引导的是主句事件发生的前提条件或唯一条件。 Eg1: I can tell you the truth on condition that you promise to keep a secret.我可以告诉你真相，条件是你答应保密。 Eg2: 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可以下水游泳。 Attention（注意）： ①unless = if...not. Eg: Let's go out for a walk unless you are too tired. If you are not too tired, let's go out for a walk. ②if 引导的有和两种： 真实条件句Eg：If it rains tomorrow, we won’t go on a park
高中英语状语从句讲解和练习(含答案)
t 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. Naturally , our grandparents were pleased to get our phone call . (副词) 2. We worked hard , from sunrise to sunset . (介词状短语) 3. To help my disabled aunt , I spend an hour working in her house every day . (不定式) 4. Seen from a distance , the farmhouse looked deserted . (过去分词) 5. I know how to light a camp 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 , till, until 特殊引导词：the minute, the moment, the second, every time, the day，the instant, immediately , dire ctly, no sooner … than, hardly …when, scarcely … when I didn’t realize how special my mother was until I became an adult. While John was watching TV, his wife was cooking. The children ran away from the orchard(果园) the moment they saw the guard. No sooner had I arrived home than it began to rain. Every time I listen to your advice, I get into trouble. 2．地点状语从句 常用引导词：where 特殊引导词：wherever, anywhere, everywhere Generally, air will be heavily polluted where there are factories. Wherever you go, you should work hard. 3．原因状语从句 常用引导词：because, since, as, since 特殊引导词：seeing that, now that, in that, considering that, given that, considering that, My friends dislike me because I’m handsome and successful. Now that everybody has come, let’s begin our conference. The higher income tax is harmful in that it may discourage people from trying to earn more. Considering that he is no more than 12 years old, his height of 1.80 m is quite remarkable. 4．目的状语从句 常用引导词：so that, in order that 特殊引导词：lest, in case, for fear that，in the hope that, for the purpose that, to the end that The boss asked the secretary to hurry up with the letters so that he could sign them. The teacher raised his voice on purpose that the students in the back could hear more clearly. 5．结果状语从句 常用引导词：so … that, so… that, such … that, 特殊引导词：such that, to the degree that, to the extent that, to such a degree that, He got up so early that he caught the first bus. It’s such a good chance that we must not miss it. To such an degree was he excited that he couldn’t sleep last night.
《if 引导的条件状语从句》教案
英语教学设计 课题类型：复习课 内容: The usage of “if” Review the usage of “if” I. Teaching aims and demands i. Knowledge objects:
1. Review the usage of “ if ”in adverbial clauses of condition 2. Review the usage of “if” in subjunctive mood 3. Review the usage of “if” in objective clauses ii. Ability object: Train students’ speaking ability iii. Moral object: Make students know more about helping the people in trouble II. Teaching key points 1. How to tell the differences among the three situations 2. How to do exercises more correctly according to what we reviewed III. Teaching difficult points 1. Tell the differences between the usage of “if” i n adverbial clauses of condition and in subjunctive mood 2. How to use “if” in these three different situations IV. Teaching methods 1. Sentence chains activity to help 2. Competition 3. Talk about the pictures V. Teaching aids some colorful cards, The blackboard , A projector VI. Teaching procedures StepI.lead in and review the usage of “if” in adverbial clauses of condition. Listen to a song----“If you’re happy”. Students listen to it a nd summarize the usage of “if” in adverbial clauses of condition. eg, 1. If it rains tomorrow, I won’t go shopping.
(完整word版)初中条件状语从句(附答案)
条件状语从句讲解及练习 一、考点归纳 由连接词if或unless引导的状语从句叫做条件状语从句。（注意：在含有条件状语从句的复合句中，如果主句是一般将来时态，从句要用一般现在是“主将从现原则”。通常译作“假如，如果，除非”。引导词： 常用引导词： if , unless 1.if 引导词用法 学习" if " 引导的条件状语从句的用法,现在总结一下: if 条件句不一般, 几个要点记心间; 条件句,放在前, 逗号要放句中间。 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。 if 引导的条件句有：真实条件句和非真实条件句两种: （1）真实条件句：表示在某种条件下某事很可能发生。Eg: a)If you ask him, he will help you. 如果你请他帮忙,他会帮你的。 b)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。 c)If it rains tomorrow, we won’t go on a picnic. 如果明天下雨，我们就不去野餐。 注意：切记紧跟着if的那句话是从句。 （2）非真实条件句是虚拟语气的一种，表示与事实相反，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。 Eg: a)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。 b)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。 c)If I were you, I would go with him. 如果我是你,我会和他一起去的。 2. unless引导词用法 （1）固定搭配： unless = if...not 除非,若不,除非在……的时候。Eg: a)You 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。 b)Unless it rains, the game will be played. =If it dosen't rain，the game will be played. 除非下雨,比赛将照常进行。 c)Let's go out for a walk unless you are too tired. d)= If you are not too tired, let's go out for a walk 经典语句：If it dosen't rain tomorrow,we will go to the zoo. 条件状语从句就是用以表示“在某
状语从句——条件状语从句 教案
一、复习预习 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。 二、知识讲解 知识点： 【考查点1】 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。 【考查点2】 另外要注意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