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1、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 farm
2、house 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
3、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 , directly, no sooner than, hardly when, scarcely whenI didnt realize how special my mother was until I became an adult.While John was wat
4、ching 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.When , while, as 都可解释为“当的时候”但侧重点有所不同。1) When Eg: When I arrived home , I had a little rest
5、.注意点：when 从句的主语与主句主语相同，谓语动词是 be 动词时，从句主语和 be 可以省略。Eg: When (she was) walking along the street, she met her class teacher.2) AsAs 除了表示“当的时候” ，还可表示为“一面一面” ， “随着”Eg: He sang as he danced.(一面一面)You will grow wiser as you grow older.(随着)3) While 表示“当的时候 ”强调主句的动作和从句的动作同时发生，从句一般用进行时，从句动词必须是延续性动词。Eg: While
6、we were working, they were having a rest.While (they were) having a discussion, they got very confused.注意点：while 有对比的含义，解释为“然而” 。eg: I prefer black tee, while he likes coffee.1 until, notuntil 表示“直到 才”,在肯定句中主句常用延续性动词；在否定句中主句常用短暂性动词。肯定句：I waited until midnight.否定句：I did not leave until midnight.注意点：1
7、）not until在句首，主句用倒装eg: Not until you had explained how did I manage to do it.2) It is not untilthat引导的强调句It was not until it was dark that he came back.3. the minute, the moment, each time 都可表示“一就 ”eg: The worker recognized the type of the machine the moment he saw it.注意点：the minute, the moment, eac
8、h ( every, next, the first) time 作连词不和 when 连用。4Hardly/scarcelywhen, no soonerthan, as soon as 表示为“一 就”eg: I had hardly/scarcely got home when it began to rain.I had no sooner got home than it began to rain.It began to rain as soon as I got home.注意点：Hardly/scarcelywhen, no soonerthan 位于句首，主句用倒装eg: H
9、ad I hardly/scarcely got home when it began to rain.No sooner had I got home than it began to rain.2 地点状语从句常用引导词：where特殊引导词：wherever, anywhere, everywhereGenerally, 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
10、导词：seeing that, now that, in that, considering that, given that, considering that, My friends dislike me because Im handsome and successful.Now that everybody has come, lets begin our conference.The higher income tax is harmful in that it may discourage people from trying to earn more.Considering th
11、at 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 thatThe boss asked the secretary to hurry up with the letters so that he could sign them.The teacher
12、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.Its such a good chance that we must not miss it.T
13、o such an degree was he excited that he couldnt sleep last night.6 条件状语从句常用引导词：if, unless, 特殊引导词：as/so long as, only if, providing/provided that, suppose that, in case that, on condition that Well start our project if the president agrees.You will certainly succeed so long as you keep on trying.Prov
14、ided that there is no opposition, we shall hold the meeting here.7 让步状语从句常用引导词：though, although, even if, even though特殊引导词： as(用在让步状语从句中必须要倒装) ，while ( 一般用在句首 )，no matter ， in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whicheverMuch as I respect him, I cant agree
15、to his proposal. 尽管我很尊敬他， 我却不同意他的建议。The old man always enjoys swimming even though the weather is rough.No matter how hard he tried, she could not change her mind.He wont listen whatever you may say.8 比较状语从句常用引导词：as(同级比较), than(不同程度的比较)特殊引导词：the more the more ; just as ， so; A is to B what /as X is
16、to Y; no more than; not A so much as BShe is as bad-tempered as her mother.The house is three times as big as ours.The more you exercise, the healthier you will be.Food is to men what oil is to machine. 食物之于人，犹如油之于机器。9 方式状语从句常用引导词：as, as if, how特殊引导词：the wayWhen in Rome, do as the Roman do.She behaved as if she were the boss.Sometimes we teach our children the way our parents have taught us.10. 状语从句
