初中英语语法 状语从句
初中英语语法专题 ： 状语从句 讲解与练习(PDF版)
状语从句在英语中，状语从句在主从复合句中修饰主句中的动词、形容词或副词等。
状语从句由从属连词引导，与主句连接，位于句首时，常用逗号分开，位于句末时，其前一般不用逗号。
英语中的状语从句根据其用途可分为九大类，分别可表示时间、地点、原因、目的、结果、条件、让步、比较和方式。
学习状语从句关键是要掌握引导九类状语从句的有关连接词。
只要记住连接词一般都能识别是何种状语从句，从而正确分析句子结构并理解句子意思。
一、时间状语从句引导时间状语从句的连词较多，但它们的共同点是：当主句是一般将来时或祈使句表示将来的意义时，时间状语从句用一般现在时(主将从现)。
例如：I’ll ring you up as soon as I get to New York.I will tell him everything when he comes back.He won’t believe it until he sees it with his own eyes.时间连词when 的用法一般来讲，when 的意思相当于at that time （在……时刻），从句的谓语动词通常是短暂动词，表示某一时刻的动作。
不过，when 引导的从句也可接延续动词，这时从句往往用过去进行时态，表示某一时间段内发生的动作。
时间从句所表达的时间通常是过去和将来。
常见表示过去动作的四组时态搭配：一、主句一般过去时＋从句一般过去时I started my dinner when he left.He left when I got there.二、主句一般过去时＋从句过去完成时I started my dinner when he had left.He left when I had got there.三、主句一般过去时＋从句过去进行时（三、四用法见过去进行时“长动作，短动作”）The doorbell rang when I was telephoning.副词从句种类常用连接词时间状语从句when,while ,as,before ,after ,since ,till ,until ,as soon as 地点状语从句where 原因状语从句because ,as,for,since 目的状语从句so that ,in order that 结果状语从句so...that,so that,such...that 条件状语从句If,unless 让步状语从句although,though,even though,even if 比较状语从句as,than 方式状语从句as,the way四、主句过去进行时＋从句一般过去时I was telephoning when the doorbell rang.时间连词while的用法while用作时间连词时，意思相当于during that time（在……期间），表示某一时间段内发生的动作。
初中英语语法 If引导的条件状语从句(讲解及练习)
初中英语语法 If引导的条件状语从句（讲解及练习）初中英语语法-if引导的条件状语从句（讲解及练习）初中英语dd条件状语从句（讲解&练习）ⅰ条件状语从句的定义ⅱ条件状语从句的鼓励词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。
ifwepaymuchattentiontotheearth,we'llhaveabetterworld.如果我们多关爱地球，就会拥有一个更美好的世界ifitrainstomorrow,whatshallwedo?如果明天下雨，我们怎么办？特别注意：if还可以鼓励交互式条件句，则表示不容同时实现的条件，从句中多用通常过去时或过去顺利完成时。
whatwouldhappeniftherewerenowater?如果没有水会怎样？2.unless鼓励的条件状语从句，unless的意思就是如果不，除非。
可以与if...not 交换。
youwillfailinenglishunlessyouworkhard.你英语考试可以不及格的，除非你更加不懈努力。
3.as/solongas引导的条件状语从句：as/solongas意思是“只要”solongasyou'rehappy,iwillbehappy.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条件句真实从句一般现在时一般过去时be动词用（were）用法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）。
②主句中含有情态动词，if从句用一般现在时态。
主句一般将来时情态动词+动原祈使句would/could+动原例句非真实wewillstayathomeifitrainstomorrow.如果明天下雨，我将要呆在家。
ifyoufinishyourhomework,youcangohomenow.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’tjumpintotheriverifyoufeelveryhot.如果你感到很热，不要跳入河里。
2020年初中英语语法之状语从句(无答案)
状语从句1.概念：在句子中作状语的从句叫作状语从句。
状语从句都是由从属连词引导的。
2.分类：状语从句根据其用途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、方式状语从句九种。
3.常见考点：when意为“当……时”、“在……之后”，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，从句中的动词可用延续性动词，也可用终止性动词。
例：When you are crossing the street, you must be careful.while译为“与……同时，在…….期间”。
while引导的从句中的动词常用延续性动词或表示状态的动词。
例：They rushed in while we were discussing problems.as引导时间状语从句时可以表达“正当，一边……一边，随着”等意思。
①表示某事一发生，另一事随即发生。
例：As the sun rose the fog disappeared.②表示某事发生的过程中另一事发生。
例：I heard their voices as I crossed the hall.③表示两个动作同时发生。
例：He smiled as he passed.before引导的时间状语从句表示主句动作发生在从句的动作之前，反之用after。
例：Did she leave a message before she went?until/till引导时间状语从句，表示“直到”，常可换用，主句的谓动是延续性动词时，主句用肯定形式表这一动作或状态一直延续到until/till所表示的时间为止。
例：You may say here until the rain stops.注意：主句谓动是非延续性动词时，用否定形式表主句的谓语所表示的动作直到until所表示的时间才发生。
构成句式not..until…，有时不用not，而用其他如never,，nothing等表示否定的词。
初中英语语法课件 原因状语从句
原因状语从句基本用法
for 的用法： for是并列连词，引出的原因较间接，似乎是事后所想到 的补充解释的理由，只陈述一般推断的理由，不一定表 示产生结果的必然原因，主要放在两个并列句之间。
原因状语从句
It must be morning for the birds are singing. 一定是清晨了，因为鸟儿在叫。 There must be no one in the house， for the door is closed. 屋子里肯定没有人，因为门是关着的。
原因状语从句基本用法
because和so不能同用在一个句子里, 如： 我们不能说：
Because it rained hard, so we stayed at home. （错）
应该说： Because it rained hard, we stayed at home. 或 It rained hard, so we stayed at home.
原因状语从句基本用法
because的用法： because通常表示直接的原因。because引导的从句表示直 接而明确的原因和理由，表示按因果关系的推断，语气 很强，用来回答why的问题，一般位于主句之后。 We couldn't go out because it was too cold. 因为天气太冷，我们不能外出。
原因状语从句基本用法
初中英语语法原因状语从句讲解
原因状语从句讲解(一)原因状语从句是用来说明引起主句这个结果的原因的从句，在初中阶段引导原因状语从句的从属连词主要的有because, as, since,for等。
例如：1.I didn’t go to school yesterday because I was ill.我昨天没去上学，因为我生病了。
2. Since everybody is here, let’s begin our meeting.既然大家都来了, 让我们开始开会吧.3. As you are in poor health, you should not stay up late.既然你身体不好, 你就不该熬夜.4.I asked her to stay to tea, for I had something to tell her.我请她留下来喝茶,因为我有事要告诉她.(二)原因状语从句应注意的问题1、because习惯上不与so连用汉语习惯上说“因为…所以…”，但英语习惯上却不能将so与because 连用：正：Because it was raining, we stayed at home. / It was raining, so we stayed at home.误：Because it was raining, so we stayed at home. 因为下雨，所以我们呆在家里。
2、because 从句与because of短语的转换Because引导的原因状语从句有时可与because of 短语转换，because of后加的原因可以为好或坏，但最正规的还是because。
He can’t come because he is ill. / He can’t come because of his illness. 他因病不能来。
I said nothing about it because his wife was there. / I said nothing about it because of his wife’s being there. 因为他妻子在那儿，我对此事只字未提。
中考英语语法：条件状语从句考点分析
初中英语语法：条件状语从句考点分析条件状语从句的概念简述在复合句中，由从句表示的状语叫做状语从句。
由连接词if或unless引导的状语从句叫做条件状语从句。
在复合句中，由从句表示的状语叫做状语从句。
它可以用来修饰主语中的动词.形容词.副词等。
根据它表达的意思，状语从句可以分为时间状语从句，地点状语从句，条件状语从句，比较状语从句，目的状语从句，结果状语从句和让步状语从句等。
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，从句要用一般现在时[主将从现原则])条件状语从句的语法：e.g. If you're not satisfied with the life you're living, don't just complain. Do something about it. 对于现况的不满，不能只是抱怨，要有勇气作出改变。
If you're lonely when you're alone, you're in bad company.--Jean Paul Sartre 如果你独处时感到寂寞，说明没有把自己陪好。
条件状语从句就是用以表示“在某种条件下,会……”常用 if ,in case , on condition等词来引导连接词主要有if, unless, as/so long as, on condition that,provided,suppose,supposing 等。
.主句用一般将来时，if或unless引导的条件状语从句用一般现在时。
固定搭配：unless = if...not.e.g. 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.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，叙述真实可能发生的事情，例如：They get angry if they think they are being treated disrespectfully. 他们要是觉得受到了怠慢，就会大动肝火。
(完整版)初中英语语法专练状语从句Word版含答案
VI 状语从句1.—What was the party like?—Wonderful, it’ s years ________I enjoyed myself so much.A. afterB. whenC. beforeD. since2. When you read the book, you’ d better make a mark ________you have any questions.A. at whichB. at whereC. the place whereD. where3.I didn ’ t manage to do it ________you had explained how.A. untilB. unlessC. whenD. before4. ________he comes, we won’ t be able to go.A. WithoutB. UnlessC. ExceptD. Even5.________the day went on, the weather got worse.A. WithB. SinceC. While6.It is ________fine weather that we decide to go for an hour.A. suchB. such aC. soD. so as7.It is five years ________ he came to our school.A. afterB. beforeC. whenD. since8.Please stay at the station until ________.A. he returnedB. he will returnC. he is returningD. he returns9.________there is a will, there is a way.A. ForB. AsC. SinceD. Where10. ________I read, the more I understand.A. The moreB. So muchC. How muchD. Much more11. He will send his children abroad for the summer ________ he ________ enough money.A. if; hasB. unless; hasC. unless; hadD. even if; had12. ________you understand this rule, you will have no further difficulty.A. SoB. UnlessC. OnceD. Though13. Jones has bought the book ________she can follow the TV lessons.A. in order toB. in order thatC. so as thatD. such that14. Please keep quiet ________others are talking.A. asB. afterC. thatD. while15. ________the clock struck half past eleven, all the students left the theatre.A. WhenB. WhileC. AsD. Though16. You may leave the classroom when you ________writing.A. will finishB. are finishingC. have finishedD. had finished17. ________had he gone to bed ________he fell asleep.A. No sooner; whenB. No sooner; thanC. Hardly; thanD. Hard; when18. ________he said he wasn ’ t hungry, he ate the big breakfast.A. EvenB. UnlessC. SinceD. Although19. ________to his home many times, but she still doesn ’ t remember the name of the street andthe number of the house.A. Having beenB. Though he has beenC. She has beenD. Though hewent20.Tom is more clever ________ any other student in his class.A. amongB. ofC. asD. than21.No matter how hard he worked, ________.A. he could not do any better C. so he could not do any betterB. and he could not do any better D. but he could not do any better22.The Italian boy was regarded as a hero ________he gave his life for his country.A. according toB. because ofC. on account ofD. because23.He was about to leave my house ________it began to rain.A. whileB. asC. whenD. since24.Ten minutes earlier, ________we could have caught the last train.A. orB. butC. andD. so25.________you do, try your best.A. WheneverB. WhereverC. WhateverD. However26.________, he has been dead for two months.A. Believe it or notB. If you believe it or notC. Whether believe or notD. You believe it or not27.________there were no buses, they had to walk to the cinema.A. WhileB. ForC. UnlessD. As28.________he is easy to get along with, I decide to share the room with him.A. Now thatB. Since thatC. Because ofD. For which29.China has a larger population ________.A. than that AmericaB. as AmericaC. than AmericaD. than that ofAmerica30.He succeeded in getting the gold medal ________.A. as expectingB. than expectedC. than expectingD. as expected31.He talks ________he knew everything in the world.A. becauseB. sinceC. as ifD. so that32.She no longer sang and danced ________she used to.A. likeB. asC. as thoughD. as if33.The park reaches________ the airport.A. so far asB. as far asC. so farther asD. as farther as34.________I know, the book is very useful to you.A. So far asB. So farC. So long asD. So as35.Stay ________you are and keep silent.A. in whichB. the placeC. at whichD. where36. Do you mind________?A. I sitting here for a whileB. if I shall sit here for a whileC. if my sitting here for a whileD. if I sit here for a while37.Although he is considered a great writer, ________.A. his works are not widely read C. so his works are not widely readB. but his works are not widely read D. still his works are not widely read38.________, a group of soldiers was advancing towards the position of the enemy.A. Because it was dangerousB. Unless it was dangerousC. If it was dangerousD. Dangerous as it was39.It wasn ’ t long ________he finished his speech.A. thatB. untilC. asD. before40.________you have passed the test, you have no reason to be proud of yourself.A. Even thoughB. As thoughC. Now thatD. No matter how41. Unless he ________the job on time next week, I can’ t tell him when he ________another job.A. finishes; is givenB. will finish; will be givenC. will finish; will giveD. finishes; will be given42.—Will you help your mother with the housework?—________.A. Only if I willB. Only that I mayC. Only when I wantD. Only if I may43.We sat in the front row ________we could see it better.A. forB. becauseC. so thatD. now that44.________, so the trip to the Middle East has to be called off.A. It has been raining for daysB. As the bad weatherC. Because of the bad weatherD. Because it has been raining for days45. It was evening, ________she couldn’ t feel her way home..A. forB. sinceC. whichD. while46.Our professor found his glasses ________he had left them.A. whereB. thatC. whichD. X47.Did the two girls look so much alike ________no one could tell them apart?A. butB. asC. so thatD. that48.No matter ________hard it may be, we must carry it out.A. whateverB. whatC. howD. X49.Soapy is not ________ as Susie.A. good as a studentB. as good studentC. as a good studentD. an as goodstudent50.The worker hung the portrait on the wall ________could be seen well.A. whereB. where itC. that itD. so that51.It is not so important what you say ________.A. but how do you say itB. as how you say itC. as how do you say itD. but how yousay it52.I usually watch television in the evening ________ I have to study for an examination.A. unlessB. ifC. whileD. when53.—Is Mr. White at home?—Of course, ________he has broken his leg, he must be in bed these days.A. whetherB. sinceC. ifD. so54.They are ________abroad as they were at home.A. almost as happyB. almost happy asC. as happy almostD.as almosthappy55.You can have your turn ________the barber finishes cutting my hair.A. the momentB. unlessC. becauseD. until56.However much ________, it will be worth it.A. does the house costB. costs the houseC. the house will costD. the house costs57. Go out tonight ________it’ s dark.A. whichB. whatC. whyD. while58.They won ’ t care ________they see it.A. what ifB. as ifC. even ifD. so that59.________these are people, they find ________there is waste.A. Where; thatB. When; thatC. What; XD. Whether; X60. ________you work, ________progress you’ ll make.A. The hard; the greaterB. Harder; greaterC. The harder; the greaterD. Harder; the greater1— 10. DDABD ADDDA11— 20. ACBDA CBDCD21— 30. ADCCC ADACD 31— 40. CBBAD DADDA41— 50. DDCAA ADCCB 51— 60. BABAA DDCACVII 名词从句1.I remember ________this used to be a quiet village.A. whenB. how c. where D. what2.________he said at the meeting astonished everybody present.A. WhatB. ThatC. The factD. The matter3.________leaves the room last ought to turn off the lights.A. AnyoneB. The personC. WhoeverD. Who4.The photographs will show you ________.A. what does our village look likeC. how does our village looks like5.Can you make sure________ the gold ring? B. what our village looks like D. how our village looks likeA. where Alice had putB. where had Alice putC. where Alice has putD. where has Alice put6.Please read ________you like.A. whateverB. no matter whatC. that allD. all what7.Ask her ________come with us.A. if she willB. if will sheC. whether sheD. whether willshe8.________we need money is quite clear.A. IfB. WhatC. ThatD. X9.________the car can be used has not been known yet.A. IfB. WhatC. ThatD. Whether10.________will take part in this English speech contest will be announced over the radio.A. WhoeverB. ThoseC. EveryoneD. Anyone11.________knows the secret will come here.A. WhoeverB. ThoseC. EveryoneD. Anyone12.________he will give us a lecture.A. We are told thatB. It is told thatC. We are told whichD. It is told13.________happened ________ he was unfit for the office.A. This; thatB. That; thatC. It; thatD. He; that14.________still needs to be discussed.A. How is the plan to be carried out C. Why is the plan carried outB. How the plan is to be carried out D. When is the plan carried out15. That ’ s ________the Party requires us to do.A. thatB. whyC. howD. what16.Energy is ________which makes things work.A. whatB. somethingC. anythingD. everything17. ________we can’ t understand is ________he didn’ t join us in our discussion.A. That; whyB. Which; howC. What; whatD. What; why18.The fact ________ he is a model teacher is well-known.A. whatB. whichC. whyD. that19.I have no idea ________.A. how fast does light travel C. that fast does light travelB. how fast light travels D. that fast light travels20.We were warned________ the experiment would be dangerous.A. ifB. whether D. that21.I wonder________ he made such a careless mistake.A. howB. thatC. whatD. why22.We all know ________he is getting along well with his studies.A. thatB. howC. whatD. which23.________do you think will join us in the work?A. WhomB. WhoC. ThatD. How24.I will give the book to________ wants to read it.A. whoeverB. whomeverC. whomD. that25.She often thinks of ________ she can do more for her motherland.A. whatB. how c. that D. which26.We took ________ for granted that they would accept our advice.A. thatB. thisC. itD. them27.He came back to the classroom to see ________he ________anything in it.A. that; had forgottenB. that; had leftC. if; had leftD.if;hadforgotten28.The teacher asked ________ his students.A. what the matter was withC. what was the matter with29.I don ’ t know________. B. which matter was with D. what was matter withA. who of them should we elect C. which of them I should electB. who of them we should elect D. which of them should I elect30.They expressed the hope ________they would come over to China again.A. whichB. whomC. whatD. that31.________that the scientist will give us a talk next month?A. Is trueB. Is it trueC. It’ s trueD. it’ s truly32.—________you did?—No, as a matter of fact I didn’ t need to.A. Is that whatB. Is what thatC. What is thatD. Is that which33.________ you don ’ t like him is none of my business.A. WhatB. WhoC. ThatD. Whether34.I know nothing about Jim________ he is an American.A. exceptB. besidesC. except forD. except that35.My idea is ________we should get more people to do the work.A. whatB. whichC. thatD. all36.It worried her a bit ________her hair was turning grey.A. whileB. that D. for37.It is clear ________the motion of a rocket depends not on air but on reaction.A. whenB. whetherC. ifD. that38.________doesn ’ t matter much ________dressouy are going to wear.A. This; thatB. That; whoC. It; whichD. It; who39.________we do must be in the interests of the people.A. ThingsB. ThatC. WhateverD. No matter what40.The reason ________we were late is ________we missed the train.A. why; becauseB. why; thatC. why; whyD. that; that41.________is unfit for the office.A. it seems to me that C. That seems heB. It seems to me that he D. That seems to him that42.It looks ________we shall have to do the work ourselves.A. thatB. likeC. seemingD. as though43.That he hasn ’ t come is ________he is busy writing the papers.A. thatB. whyC. becauseD. the reason44.The question is ________the book is worth reading.A. ifB. whetherC. howD. that45.________is not known yet.A. When she has goneB. Where she has goneC. How did she leaveD. Why did she go46.When and where we ________the meeting ________still a problem.A. have; areB. shall have; isC. had; isD. will have; are47.His suggestion ________to see the exhibition interested every one of us.A. that we goB. which we should goC. that we would goD.when weshould go48.Word came ________his poem won the first prize.A. thatB. whetherC. asD. because49.China isn ’ t ________she used to be.A. thatB. whichC. likeD. what50. I ’ ll tell him ________ with the coat.A. how pleased I amC. what I am pleased51.Have you any idea ________she did it? B. however I am pleased D. however pleased I amA. whatB. whyC. with whoD. about that52.Can you tell me ________ you go to the evening school per week?A. how soonB. how many timesC. how longD. how often53.________the man was a thief, the boy watched him closely.A. To think thatB. Thinking thatC. To think about thatD. thinking it that54. A TV reporter wanted to know ________people ________the film.A. how; thoughtB. what; thoughtC. how; likedD. what; liked55.________is going to America for further study.A. He is said thatB. People said that heC. It was said heD. It is said thathe56.I ’ ve got to make ________he told a lie.A. that clearB. it clear thatC. quite clearD. this clear that57.Could you tell me ________.A. what her name is b. what her name was C. What is her name D. what was hername58.That is ________paper came into use in china.A. howB. thatC. whatD. which59. It makes no difference________ we ’ ll share the office with.A. ifB. whetherC. whoD. that60.I don ’ t know ________they will do with this old machine.A. how1— 10. AACBC 31— 40. BACDCAACDABDCCBB. whatC. thatD. when11— 20. AACBD BDDBD21— 30. DABAB41—50. BDCBB BAADA51— 60. BBBCD BAACBCCCCD。
初中英语语法 状语从句 专题讲解 学案(有答案)
初中英语语法状语从句专题讲解学生通过本课学习，能够掌握状语从句的概念、类型，知识要点和用法，并在综合能力上得以应用。
☆课堂回顾：英语句子结构——状语：一、什么是状语修饰动词、形容词、副词或整个句子, 用来补充说明或限定动作或状态特征的句子成分，叫作状语。
一般表示行为发生的时间、地点、条件、目的、方式、程度等意义。
He writes carefully. He walks slowly.（认真地写，慢慢地走，修饰动词用副词，作状语）This material is environmentally friendly.（修饰形容词用副词，作状语）He runs very slowly.（修饰副词slowly, 因此very是副词，作状语）Unfortunately, he lost all of his money.（修饰整个句子用副词，作状语）基础操练：请画出下列句子中的状语。
1. Every night he practices playing the piano.2. We must work hard to pass the exam.3. She loves the library because she loves books.4. Every night he heard the noise upstairs.5. He began to learn English when he was eleven.6. With the medicine box under her arm, Miss Li hurried off.★本课知识点：状语语从句的知识要点状语从句一、宾语从句的概念:定义：英语中,修饰动词、形容词、副词等的句子成分叫状语（adverbial)。
状语是谓语的另一个附加修饰或限制成分,从情况,时间,地点,方式,条件,对象,肯定,否定,范围和程度等方面对谓语中心词（动作或整件事）进行修饰或限制。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
初中英语语法状语从句
初中英语语法状语从句
1状语从句
在复合句中，修饰主句中的动词、形容词或副词等的从句叫状语从句。
状语从句根据它表达的意思可分为时间、地点、原因、目的、结果、让步、比较(或方式)和条件等类。
1.时间状语从句
引导连词有when，while，till，not…until，since，after ,before ,as soon as
The bus won’t start until everybody gets on.
公共汽车直到每人都上车为止，才开动。
When he knocked at the door I was cooking.
当他敲门时，我正在煮饭。
Last night before he came back home, his wife had already cooked dinner and waited for 2 hours.
昨天晚上在他回到家之前，他的妻子已经做好晚饭足足等了他两小时之久。
After I went to church, I went shopping.
2.地点状语从句
地点状语从句通常由where, wherever 引导。
Where there is a will, there is a way. 哪里有志向，哪里就有出路。
有志者事竟成。
Where there is a life, there is a hope. 哪里有生命，哪里就有希望。
留得青山在，不怕没柴烧。
Wherever you go, whatever you do, I will be right here waiting for you.
不管你去哪里，不管你做什么，我都会在此守侯你。
3.原因状语从句
引导连词有because，as, since。
He didn′t see the film because he had seen it.
他没有看那部电影，因为他已经看过了。
They couldn’t get on the train，for it was too crowed.
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，且前面有逗号，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.
注意：because不能和so 连用。
4.目的状语从句
引导连词有 that，so that…，in order that。
He must get up early so that he can catch the first bus.
他必须早起，以便能赶上第一辆公共汽车。
He repainted the house so that he could welcome the guests.
Millions of trees are planted in North China so that the sand can be stopped from moving south.
The mother left work earlier in order that she could be at home when the children arrived.
So that …——以便/以致……
例如：
(1)They studied hard so that they could pass the exam.
(2)They started early so that they caught the early bus.
注意点：
在例句(1)中,是引导目的状语;在例句(2)中，是引导结果状语。
一般来讲，从句中含有情态动词的，为目的状语。
无情态动词的，为结果状语。
5.结果状语从句
引导连词有that，so…that…，such….that
The box is so heavy that I can’t lift it.
这个盒子如此沉，以致我无法抬起来。
such+名词性词组+that…
So+形容词/副词+that…——如此……以致……
例如：
(1)She is such a good teacher that we all love her.
(2)It was such a hot day that they didn’t go out for a walk as usual.
注意点：
1.such+a+形容词+名词+that…，可以改写成：so+形容词+a+名词+that…
例句(1)可以改写成：She is so good a teacher that we all love her.
2.在such+形容词+名词复数或不可数名词+that…结构中，形容词如果是many/few或much/little时，用so不用such，即：so+many/few+可数名词复数+that…，so+much/little+不可数名词+that…
(1)There are so many people in the room that I can’t get in.
(2)The man has so much money that he can buy a car.
6.让步状语从句
引导连词有though，although; even though/if; whatever; however
Although he is young，he knows a lot of things.
虽然他年龄小，但却认识许多事物。
Even though you don’t like him, you still have to be polite. Whatever you say, I will not change my mind.
注意：although，though不能和but连用。
7.比较(方式)状语从句以than为引导连词。
常见连词(as)…as.., …than…; the…, the…
Jim is older than Lucy(is).
吉姆比路希年长。
Skiing is more exciting than running.
The more you practice, the more knowledge you will get.
注意：than 引导的比较状语从句中的谓语常省略。
8.条件状语从句以if, unless为引导连词。
If you eat bad food，you may be ill.
如果你吃到坏了的食物，就会生病。
If it doesn’t rain tomorrow, we will have a sports meet.
注意：主句是将来时，从句用一般现在时。
状语从句中常见的误点
1) 时间状语从句和条件状语从句中的时态与主句的搭配：(俗称：主将从现)
2) 原因状语从句because与because of ;
Because+从句和because of +n./ pron
例如：
I was late because I didn’t catch the bus.
I was late because of the rain.
初中英语语法学习建议
总是站在系统的高度把握知识
很多同学在学习中习惯于跟着老师一节一节的走，一章一章的学，不太对意章节与学科整体系统之间的关系，只见树木，不见森林。
随着时间推移，所学知识不断增加，就会感到内容繁杂、头绪不清，记忆负担加重。
事实上，任何一门学科都有自身的知识结构系统，学习一门学科前最先应了解这一系统，从整体上把握知识，学习每一部分内容都要弄清其在整体系统中的位置，这样做往往使所学知识更容易把握。
追根溯源，寻求事物之间的内在联系
学习最忌死记硬背，特别是理科学习，更重要的是弄清楚道理，所以不论学习什么内容，都要问为什么，这样学到的知识似有源上水，有木之本。
即使你所提的问题超出了中学知识范围，甚至老师也回答不出来，但这并不要紧，要紧的是对什么事都要有求知欲，好奇心，这往往是培养我们学习兴趣的重要途径，更重要的是养成这种思考习惯，有利于思维品质的训练。
发散思维，养成联想的思维习惯
在学习中我们应经常注意新旧知识之间、学科之间、所学内容与生活实际等方面的联系，不要孤立的对待知识，养成多角度地去思考问题的习惯，有意识地去训练思维的流畅性、灵活性及独创性，长期下去，必然会促进智力素质的发展。
语法的关键性是很重要的。
对于初中生来说，这个时候才刚开始学习语法，要具备熟练的语法技巧，才能够把握住英语这门课程的成绩。
语法怎样才能够运用自如。
英孚英语告诉你，使用英孚英语提供的语法技巧，根据技巧去结合语法共同使用着。
将语法举一反三的放在文章中去使用着。
本次整理就到这里啦，祝大家在考试中能金榜题名!。