中考复习专题状语从句知识点总结及经典习题(含答案)
人教版中考英语九年级英语状语从句知识点总结及经典习题(含答案)
人教版中考英语九年级英语状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．_______it’s a public holiday today, some firefighters in our city are still on duty. A．Although B．Once C．If【答案】A【解析】【详解】句意“尽管今天是公共节假日，但是我们城市的一些消防员仍然在岗位值班”。
A.尽管（引导让步状语从句）；B.一……就……（引导时间状语从句）；C.如果（引导条件状语从句）。
根据句意可知，今天是公共假日，本应该休息，但是消防员仍然在岗值班，表示让步，故选A。
2．My English teacher has taught English she came to the school.A．since B．as C．when D．for【答案】A【解析】【详解】考查连词辨析，句意：我的英语老师自从来到这个学校就教英语．结合语境推断句意是"我的英语老师自从来到这个学校就教英语．"，此句中的谓语动词用了现在完成时，本题设空处后面的时间状语从句用了一般过去时，所以结合句意用现在完成时的标志词since引导，故选A3．We don’t know the love of our parents ____________ we become parents ourselves one day. A．before B．until C．when D．after【答案】B【解析】【详解】句意：直到有一天我们自己成为父母，我们才知道父母的爱。
考查连词辨析。
before在……以前；until直到，和not连用表示“直到……才”；when当……的时候；after在……以后。
本句是“not …until”结构；根据句意结构和语境，可知选B。
4．—Did you give Dick a call?—I didn’t need to ______ I’ll see him soon.A．when B．through C．until D．because【答案】D【解析】试题分析: 句意：你给汤姆打电话了吗？我没必要打，因为我很快就要看到他了。
中考英语总复习状语从句X知识点总结及经典习题(含答案)含答案解析
中考英语总复习状语从句X知识点总结及经典习题(含答案)含答案解析一、初中英语状语从句1．We all know that we won't enjoy good health ______ we often exercise.A．though B．if C．when D．unless【答案】D【解析】【详解】句意：我们都知道如果我们不经常锻炼，我们将不会享有好的健康。
考查连词的用法。
A. though虽然，尽管；B. if如果；C. when当......的时候；D. unless除非，如果不。
根据句意：我们都知道如果我们不经常锻炼，我们将不会享有好的健康。
只有D项符合题意。
故选D。
【点睛】主将从现是指在时间状语从句和条件状语从句中，如果主句是一般将来时，从句用一般现在时替代一般将来时。
常见的有以下四种情况：一、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如：When I grow up, I’ll be a nurse and look after patients我长大后要当一名护士，照顾病人二、如果主句是祈使句，那么从句通常要用一般现在时如：Don’t laugh at me when I make a mistake.我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时，根据需要从句多用一般现在时如：You should be quiet when you are in the reading room在阅览室时应保持安静四. 如果if的条件状语从句遇到变换间接和直接时 , 祈使句应用not to....如; She said not to close the window常见的时间状语从句的连词有：as soon as,when,while ,as,until等。
2．Tony has had to cook by himself ________ his mother went on business to Guangzhou. A．since B．after C．during D．when【答案】A【解析】【详解】句意：自从妈妈去广州出差以来，托尼不得不自己做饭。
中考英语状语从句知识点总结及经典习题(含答案)
中考英语状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．We don't know the love of our parents _______ we become parents ourselves one day. A．untilB．afterC．whenD．since【答案】A【解析】句意：直到有一天我们成为父母，才知道父母的爱。
本题考查连词。
A. until到…为止，在…以前; 直到…才;B. after在…以后;C. when当···时候；D. since自从; 从…以来;Not until 直到···才···；不到···不···，是固定搭配，故选A。
2．I have to leave now __ I can catch the last bus.A．so that B．because of C．until D．as soon as【答案】A【解析】试题分析：so that以便，所以；because of因为，由于；until直到；as soon as一……就……。
句意：为了赶上末班车，我现在必须离开了。
结合语境可知选A。
考点：连词辨析点评：连词在句子中主要起联系上下文的作用，他们之间的区别就是表示逻辑关系的不同，所以在解题时先要理解上下文含义，然后根据上下文逻辑关系选择合适的连词。
连词的用法都比较多，语义之间还有交叉，熟记其基本应用规则，了解其区别，注意固定搭配对象，是做好此类题型的关键。
3．---Would you like to go bike riding with us tomorrow? ---Sure, ____ I am busy.A．since B．unless C．when D．until【答案】B【解析】试题分析：句意：----你想要明天和我们一起去划船吗？好的，如果我不忙我就去。
中考复习专题状语从句X知识点总结及经典习题(含答案)含答案解析
中考复习专题状语从句X知识点总结及经典习题(含答案)含答案解析一、初中英语状语从句1．Our parents always give us many useful suggestions, however, we sometimes can’t understand them ________ we get into trouble.A．if B．when C．though D．until【答案】D【解析】【详解】句意“我们的父母会给我们许多有用的建议，然而有时直到我们陷入麻烦才能理解他们”。
A.如果，引导条件状语从句；B.当……时候（引导时间状语从句）；C.尽管（引导让步状语从句）；D.直到（引导时间状语从句）。
根据句意可知，表示“直到我们陷入麻烦才能理解他们”，not...until...直到……才……，故选D。
2．I will go to the English club tomorrow I am too busy.A．since B．if C．unless D．until【答案】C【解析】【详解】句意：明天我将会去英语俱乐部，除非我太忙。
since自从；if如果；unless除非，如果不；until直到…时候。
根据句意可知，这里表示的意思是“如果我不忙，我会…”，故应选C。
3．He has made great progress his mother is very pleased with him.A．so；that B．enough；to C．so；too D．such；that【答案】D【解析】【详解】句意：他已经取得了如此大的进步以至于他的妈妈对他非常满意。
从句意可知这里需要用到“如此….以至于”so+形容词/副词+that或such+名词+that，根据句子中的great progress意思是很大的进步，是名词短语，故用such…that, 故选D。
4．______ Mike didn’t win the race , he was still wearing a smile on his face.A．If B．Since C．Although D．Because【答案】C【解析】【详解】句意：虽然迈克没有赢了比赛，但是他脸上仍然带着笑容。
中考中考英语总复习状语从句知识点总结及经典习题(含答案)
中考中考英语总复习状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．You will be late for school________ you don’t get up early.A．but B．if C．and D．or【答案】B【解析】【详解】句意：如果你不早起，你将会上学迟到。
be late for school上学迟到；get up起床。
but表示前后是转折关系；and表示前后并列或递进关系。
由此知前后句构成“结果＋条件”的关系，即“如果你不早起，你将会迟到。
”。
故选B。
2．I won't go he comes back.A．until B．while C．when D．why【答案】A【解析】句意：直到他回来，我才走。
A. until 直到； B. while当---时候； C. when当---时候； D. why为什么；not---until--- 直到---才---；故选A3．—I see Bob, he’s always listening to music.—Yeah, he’s crazy about it.A．Whenever B．Although C．Since【答案】A【解析】【详解】句意“-无论我什么时候看到鲍勃，他总是在听音乐。
-是的，他对音乐很疯狂”。
A.无论何时（引导时间状语从句）；B.尽管（引导让步状语从句）；C.自从（引导时间状语从句）。
根据句意可知，译为“无论何时”，故选A。
4．—Did you give Dick a call?—I didn’t need to ______ I’ll see him soon.A．when B．through C．until D．because【答案】D【解析】试题分析: 句意：你给汤姆打电话了吗？我没必要打，因为我很快就要看到他了。
when 当……的时候，though尽管，.until直到，because因为。
状语从句知识点总结及经典习题(含答案)
一I will telephone the police and complain about itthe noise stops soon.
A．unlessB．thoughC．becauseD．if
【答案】A
【解析】
【详解】
句意：----那么你会怎么做？-----我会给警察打电话投诉，除非噪音很快停止。考查连词辨析。A. unless除非，如果不，引导否定的条件状语从句；B. though虽然，尽管，引导让步状语从句；C. because因为，引导原因状语从句；D. if如果，引导条件状语从句。根据句意可知后句表示否定条件，填unless；选A。
【答案】A
【解析】
【详解】
句意：怀特先生告诉我们，如果明天没有达成协议，电话会议将取消。本题是含有if引导的条件状语从句的复合句。在if引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态。选项的位置在if引导的条件状语从句中，要用一般现在时态，B C选项是将来时态不符合题意要排除。D选项是现在完成时态不符合题意要排除。Reach an agreement达成协议固定短语搭配。agreement is reached协议做主语要用被动语态，故选A。
5．—Winter swimming is exciting, but one can’t do it ________ he or she has got some training.
— Exactly! It can be dangerous.
A．afterB．unlessC．ifD．while
状语从句知识点总结及经典习题(含答案)
中考英语状语从句知识点总结及经典习题(含答案)(1)
必备英语中考英语状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．My grandfather does Chinese Kung Fu every day _________ he is over eighty.A．since B．though C．until【答案】B【解析】句意：我爷爷每天练中国功夫，尽管他80多了。
A. since 自从，因为； B. though 尽管； C. until直到；根据My grandfather does Chinese Kung Fu every day和he is over eighty.之间让步关系,尽管；故选B2．一When did you leave your office yesterday?一 I finished the project.A．Until B．While C．When D．Not until【答案】D【解析】句意：昨天你什么时候离开你的办公室的？——直到我完成那个任务。
本题考查连词。
A. Until 直到···时候才结束，要与延续性动词连用；B. While 当···时候；C. When 当···时候；D. Not until直到···时候才开始，与非延续性动词连用；句子中finished（完成）是非延续性动词，故选D3．—The novel seems a little boring.—You won’t enjoy it _______________ you put your heart into it.A．when B．if C．after D．unless【答案】D【解析】试题分析：句意：--这部小说似乎有点儿无聊。
--如果你不用心读的话，你不会享受到这本书。
when，当……的时候；if如果；after在……之后；unless，如果不，除非。
中考英语状语从句归纳(附练习及答案)
时光状语从句【1 】要点: 时光状语从句,由以下连词引诱：when while as after before as soon as since till /until by the time 在时光状语从句中,要留意时态一致.一般情形下主句是未来时的时刻,从句要用一般如今时.1.when当...的时刻mozart started writing music when he was four years old.(当)莫扎特的时刻,开端写音乐作品.2.while当...时he visited a lot of places while he was traveling.他在旅途中不雅赏了很多地方.3.as在...的同时;一边...一边...he smiled as he stood up.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.前几天做完功课之后回的家.5.before 在...之前mr. brown had worked in a bank for a year before he came here.布朗师长教师来这之前已经在一家银行里工作一年了.6.as soon as 一...就...(主将从现)we began to work as soon as we got there.我们一到那就开端工作.i will write to you as soon as i get home.我一到家就给你写信.7.since 自...以来到如今暗示自曩昔的一个起点时光到今朝(措辞时光)为止的一段中断时光.主句一般用如今完成时,从句用一般曩昔时.mr green has taught in that school since he came to china three years ago.自格林师长教师来中国以来,他就在这所黉舍教书.(还可以用作介词,本句从句还可以用短语：since three years ago(自三年前以来)暗示.)8 till /until都可以作连词,衔接时光状语,也可以作介词,与其它词构成介词短语,在句中作状语.they walked till /until it was dark.他们一向走到天黑.xiao ming didn’t leave home till / until his father came back.小明直到他爸爸回来才分开家.9. by the time 到...为止 (地点句子的主句应用完成时)by the time he gets there , his father has already gone.他到家的时刻,他爸爸已经走了.by the time i got to school, the class had already began.我到校时,已经开端上课了.难点——as when while的辨析as when while都暗示主.从句动作同时产生,三者差别如下：as 暗示“一边...一边＂的意思强调两个动作同时进行,并暗示比较时when 1.还可以暗示从句动词的动作在主几句动词的动作＂之前＂或＂之后＂产生.2.when＝and then; at that moment (正在谁人时刻)while 1.用于时光较长时2. 强调两个动作同时进行,并暗示比较时有时这三个连词可以交换,有时不成以.lit was raining hard when (as) i got there.我到那边时,正鄙人大雨. ( 动作同时产生,when可换为as, 但不克不及换为while,因为get是点动词.)when i had read the article, he called me.我看完这篇文章之后,她给我打了德律风.( 从句动作产生在主句之前,留意时态表达,只能用when )when i got to the cinema, the film had begun.(当)我到了片子院时,片子已经开演了.(从句的动作产生在主句之后,只能用when,并要留意时态)she thought i was talking about her daughter, while, in fact, i was talking about my daughter.他认为我在谈她女儿,然而,现实上在谈论我女儿.(表转折,比较,when, as都不克不及代替它) 考点while the alien was buying a souvenir, the girl called the police.外星人买纪念品时,那女孩给警员打了德律风.(暗示主句,从句的动作同时产生,while后引诱的状语从句的动词必须是延续动词不克不及是点动词,因为它暗示较长时光)考点mother was worried because little alice was ill, especially as (when/ while) father was away.妈妈放心,因为小爱丽丝病了,特殊是他父亲不在家的时刻.(此时as ,when, while可通用)常识扩大1. it is since从...以来多长时光了(因为since +从句或名词,暗示一段时光)it is five years since we met last time.从我们前次会晤已经五年了.2. it is +before…(...才)it was a long time before i went to sleep again.过了很长时光我才睡着.it was an hour before(＝until) the police arrived.过了一个小时,警员才来.二.前提状语从句要点：暗示状语从句由连词if, unless (=if not) 引诱.1.if it doesn’t rain tomorrow, we will go hiking.假如明天不下雨, 我们就去郊游.2.you will get good grades if you study hard.假如你尽力进修,就会取得好成绩.3.i will go to the party unless he goes there too.我不会去介入聚首的, 除非他也去.(假如他不去,我也不去.)4.you will be late unless you leave immediately.假如你不立时走,你将会迟到的.(=if you don’t leave immediately, you will be late.)难点提醒：用前提状语从句时要留意时态的准确应用,当主句是未来时的时刻,从句要用一般如今时.he will not le ave if it isn’t fine tomorrow.一般未来时, 一般如今时they are going to have a picnic if it doesn’t rain next week.一般未来时, 一般如今时考点三.原因状语从句要点: 由连词because, since, as引诱, 也可由for, now that 等词引诱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, 让我们开端开会吧.3. as you are in poor health, you should not stay up late.既然你身材不好, 你就不该熬夜.4.i asked her to stay to tea, for i had something to tell her.我请她留下来品茗,因为我有事要告知她..难点——because , since , as , for,辨析在语气上,because 最重, 暗示的是直接来由,答复why 时只能用它. 其次是since, as ,一般不暗示原因, 而是标明来由, 进一步解释.(译为：因为,既然). for 被认为是复合句的并列连词(经常应用于揣摸),暗示来由.四.地点状语从句要点: 由连词where和复合关系词wherever (=no matter where )引诱.常识扩大where there is a will , there is a way.有志者事竟成.(谚语)1.it will be mixed school where not all the children are disabled.他将是一所混杂式黉舍,那边的儿童其实不都是残疾.(在限制性定语从句中对限先行词起限制感化.)2.wherever you go , i go too.无论你到什么地方,我都去.(wherever=no matter where)无论何处,多用于句首.3.wherever there is smoke , there is fire.无风不起浪.(谚语)4. while she was wondering where to go , she met a policeman.*疑问副词where后跟不定式,构成不定式短语. 考点五.目标,成果状语从句要点：目标状语从句由连词that, so that, so…that , in order that 引诱.成果状语从句由连词( so )that, so…that, such…that, so much/many…that引诱.1.so…that 如斯…以至于the scientist’s report was so instructive that we were all very excited.科学家的陈述很有启示性,我们觉得很高兴.he always studied so hard that he made great progress.他老是那么尽力,成果他取得了很大的提高.2.so that 以至, 以便i’ll run slowly so that you can catch up with me. (目标)我将慢慢跑以至你能赶上我.i opened the window so that fresh air might come in. (目标)我把窗户打开以使新颖空气可以进来.3. such…that 如斯...以至it’s such nice weather that all of us want to go to the park.气象是如斯的好,我们大家都想去公园玩.4.in order that=so that:为了we shall let you know the details soon in order that you can/may make your arrangements.不久我们将会让你知道详情,以便你们可以或许做出安插.(目标)难点so that ,such…that 都可以in order that两者皆可引诱目标地状语从句和成果状语从句,当他们引诱目标状语从句时,从句的谓语里经常有can, could, may, might, will, would等次.(见例句 2, 5 )so +adj./adv.+ that, such +n.+ that 以上两种句型都暗示成果,个中so为副词,后接形容词,副词原型,当可数名词前有many, few;不成数名词前有much, little润饰时,应采取句型：so many (few, much, little )+n. . such为形容词, 后只能接名词.这名词既可以地可数的,也可所以不成数的.假如这名词是可数,单数,则必须在名词前敬爱冠词a(an). 罕有的情势是:such a (beautiful)garden, such(nice)people.the weather is so nice that i’d like to take a walk.气象是如斯只好,以至于我想去散漫步.mike is so honest a man that we all believe him.麦克是如斯说谎的一小我,以至于大家都信任他li’ve had so many falls that i’m black and blue all over.我跌了很多跤,满身数摔得清一块紫一块.there are so fe w notebooks that i can’t give you any.笔记本太少了,我一本也给不了你.lit is such nice weather that i’d like to take a walk.气象是如斯只好,以至于我想去散漫步. 考点六.妥协状语从句要点: 暗示妥协的状语从句由连词 though, although引诱.难点：though, although当固然讲, 都不克不及和but连用. although,(though)…but的格局是不合错误的.但是他们都可以同yet (still) 连用. 所以thought (although)…yet(still)的格局是准确的.wrong: although he is rich but he is not happy.right : although he is rich, yet he is not happy.固然他很富有, 然而他其实不快活.right : although we have grown up, our parents treat us as children.right : although we have grown up, our parents still treat us as children.尽管我们已经长大了,可是我们的怙恃仍把我们看作小孩.although, though 辨析七.比较状语从句要点：比较状语从句重要应用于形容词和副词的原级,比较级及最高等的句子之中.1. as…as 和...一样jack is as tall as bob.捷克和汤姆一样高.not so(as)…as …和不一样she is not so(as)outgoing as her sister她不如她姐姐外向.more…than (更)this book is more instructive than that one.这本书比那本书由教导意义.the most…in/ofthis book is the most interesting of the three.这本书是三本中最有味的.the + 形容词+est…of/inthis road is the busiest street in our city. 这条路是我们城市最忙碌的街道.常识扩大no more than只不过(嫌少的意思)i have no more than two pens.我只有两支笔.it’s no more than a mile to the shops.去市肆不过一英里.not more than不如...;(前者不如后者)jack is not more diligent than john.捷克不履约翰勤恳.one of the + 名词(复数)….之一(用于最高等)han mei is one of the best students in our school.韩梅是我们黉舍最好的学生之一.演习一.用when , while ,as soon as, not…until 填空1. the car hit the man _______ he was crossing the road.2. i’ll tell you the good news_______ i get there.3. he ______ go to bed _______11o’clock last night.4. the accident happened _______ i was on my way to work.5. sports build the body______ reading builds the mind.6. i used to be rather quite_______ i was young.二.用although , though, however填空1.they got to the airport on time______ the traffic was bad.2. we had a wonderful_______ the food was terrible.3. some people think winter is a bad season. _______, for me it’sa good time because i live cold, rainy weather.三.用because, since, so… that, if填空1.______ we’re young, we shouldn’t be too afraid of making mistakes.2.the weather was ______ nice ______ i spent the whole day in thepark.3.he couldn’t come to your party______ he was ill.4.______ were you, i would wear that earrings.答案:( ) 1 The meeting didn't start___ everyone was there.A. becauseB. untilC. whyD. if( ) 2 The boy ___ to bed ___ his mother came in.A. went not; untilB. didn't go; afterC. went; untilD. didn't go; until ( ) 3 I won't believe you___ I have seen it with my own eyes.A. beforeB. untilC. afterD. when( ) 4 He ___ home ___ she was satisfied ___ his answer yesterday.A. didn't go; until; withB. wasn't go; after; toC. doesn't go; before; withD. didn't go; until; to( ) 5 He ___ back until the work ___ done.A. isn't; will beB. isn't; isC. won't be; will beD. won't be; is( ) 6 They didn't start the work ___ their teacher came back.A. untilB. whileC. as soon asD. if( ) 1 Tom will call me as soon as he ___ Shanghai.A. arrivesB. will reachC. arrives inD. get to( ) 2 I'm sure he'll come to see me before he ___ Beijing.A. will leaveB. is leavingC. leaveD. leaves( ) 3 I will tell him the news as soon as he___ back.A. comeB. comesC. will comeD. came 3( ) 1 Tom has got a watch. He ___ it for two years. It _______ by his father.A. has bought; was boughtB. has got; is bought ,C. was bought; has bought .D. has had; was bought "'( ) 2 When he got to the station, the train ___.A. leftB. had leftC. leavesD. has left( ) 3 The boy told his father what he ___ in the street.A. sawB. have seenC. had seenD. see( ) 4 We ___ TV when the telephone ____.A. watched; was ringingB. were watching; rangC. watch; ringsD. are watching; rang( ) 5 By the end of last term, I___ ten books.A. had finished readingB. have finish readingC. had finish to readD. finish read( ) 1 I ___ you for a long time. Where ___ you ___?A. didn't see; did; goB. didn't see; have; goneC. haven't seen; have; beenD. haven't seen; have; gone( ) 2 Tom___ China for 3 years.A. has beenB. has been inC. has been toD. has been at( ) 3 I won't go to see the film tonight, because I ___ my ticket.A. lostB. have lostC. will loseD. didn't lose( ) 4 -Hello! May I speak to Bob? -Sorry, but he ___ for a month.A. had been awayB. was leftC. leftD. has been away( ) 5 I ___ him since I began to live in the city.A. knowB. have knownC. knewD. will know( ) 6 Zhao Lan ___ already ___ in this school for two years.A. was; studyingB. will; studyC. has; studiedD. are; studying( ) 1 Betty didn't go to see the film yesterday ___ she was ill.A. becauseB. butC. untilD. if( ) 2 May I sit nearer___I can see more clearly? A. as if B. so that C. even if D. so( ) 3 ___ you work hard, you will certainly succeed. A. Though B. If C. Because D. For( ) 4 ___ he came to study in the university, he has made much progress in the study of English. A. While B. When C. Since D. After( ) 5 I'd like to go swimming _____ the water is not too cold.A. forB. unlessC. ifD. whether 6( ) 1 There are ___ many league members in class 2 ___ in Class 4.A. both; andB. 'so; thatC. either; orD. as; as( ) 2 -Do you have a big library?-No, we don't. At least, not___yours.A. as big asB. as big thanC. as bigger thanD. bigger asB.( ) 3 Suzhou is not ____ beautiful ____ Hangzhou.C.A. as; than B. so; as C. even; thanD. /; thanD.( ) 4 Iron is more useful ___ any other metal. A. as B. than C. then D. so( ) 1 I want to know ___ she is going to see a film. A. if B. that C. what D. which( ) 2 You are sure to pass the exam ___ you study hard.A. ifB. ThoughC. thatD. since( ) 3 I'll go to see the film with you___I have time this evening.A. whetherB. soC. ifD. when( ) 4 ___ you study harder, you'll never pass the final exam.A. IfB. UntilC. UnlessD. Except( ) 1 Although it was raining, still worked in the fields. A. but they B. and they C. they D. and yet t hey( ) 2 ___ there were only five soldiers left at the front, ___ they wenton fighting.A. Because; soB. If; andC. Though; butD. Though; /( ) 3 ___ she is very old, ___ she can still work eight hours a day.A. Because; soB. Though; butC. As; yetD. Though; yet( ) 1 Please answer the question in a loud enough voice ___ all the class may hear.A. so, thatB. orC. in order thatD. And( ) 2 Lift it up___I may see it.A. thoughB. so thatC. asD. than( ) 3 I hurried___I wouldn't be late for class. A. so B. so that C. if D. unless( ) 4 We should go by bus ___ we can get there earlier. A. as soon as B. where C. in order that D. a s( ) 1 The dictionary is so expensive ___ I can't buy it.A. becauseB. whenC. thatD. if( ) 2 I got there ___ late ___ I didn't see him.A. too; toB. such; thatC. so; thatD. so; as( ) 3 It is ___ hot in the room ___ we have to go out for a walk.A. such; thatB. so; thatC. as; asD. such; as( ) 4 He has___ an interesting book that we want to read it.A. soB. suchC. the sameD. As常识迁徙(栏目)状语从句在解完形填空题的感化在完形填空解题进程中,准确应用状语从句中的衔接词及副词,对于掌控作者思绪.从不合角度进行合乎逻辑的推理,进而达到懂得全文.构建篇章意识来解决问题,起着决议性的感化.example 1,some people dislike certain food 1______ they are not used to it. the japanese enjoy eating raw fish 2_____ few americans would want to taste it. some people do not eat particular food for religious reasons. for instance, muslims do not eat pork 3_____ pigs are thought to be unclean.1( )a. because b. before c. when d. since2 ( ) a. as b. when c. while d. after3 ( ) a. although b. because c. till d. so thatexample 2.people enjoy the food that they grew up with. as a cultural group, we learn to like what is available(现成可应用的 ) to us. sometimes we need to change our eating habits. 4_____ we move or travel to a new place with a different culture, or favorite food may not be available to us. 5_____ we have to eat food that is different from the food we are used to .4 ( )a. when b. because c. as soon as d. if5 ( )a. as a result b. before c. so d. forexample 3try not to leave any caller on hold for too long. it is better to tell someone you will call back 6_____ you are free. be sure to return calls 7_____ you can. 8 _____ you can not return the call immediately, apologize to the caller for the delay.6 ( )a. while b. after c. when d. because7 ( )a. if b. as soon as c. until d. as8 ( )a. where b. unless c. since d. ifexample 4the complete course is 26 miles, 385 yards, and takes the best runners less than 3 hours. 9______ it has changed since 1970, the new york city marathon is always exciting.9 ( )a. because b. although c. when d. tillexample 5“and i don’t think you have the right to ask me to remove them, 10_______ you are my father.” said he.(05中考))10 ( )a. after all b. only if c. even though d. as if答案：1. a2. c3. b4. d5. a6. c7. b8. d9. b 10. c状语从句在写作中的应用写作中能合理.准确地应用状语从句,不单能地道的表达英文习惯,并且还能使体裁构造加倍严谨.美不雅.例如下文：my hobbythe hobby i enjoy most is fishing.i started fishing (1)when i was five years old. i’ll never forget the day (2)when my father first took me fishing with him. on that day, i was holding a fishing rod (3)when a fish suddenly started pulling on the line. (4)i was so shocked that i fell into the water. but experience didn’t put me off and i have been fishing ever since.now i still go fishing with my father. and we often go out on sundays and spend the whole day fishing in the river.(1)是由when引诱的时光状语从句,这列从句的应用频率很高.(2)句是由i’ll never forget the day .及when my father first took me fishing with him.两局构成.when在从句中做时光状语.(3)句也是由when 引诱的时光状语从句.when 常与suddenly 连用,主句经常应用曩昔进行是.译为“正在……, 溘然……”.(4)是以so…that… (太…..一向于……)引诱的成果状语从句参考答案1. 1-6 B D B A D A2. 1-3 C D B3. 1-5 D B C B A4. 1-6 C B B D B C5. 1-5 A B B C C6. 1-4 D A B B7. 1-4 A A C C8. 1-3 C D D 9. 1-4 C B B C 10. 1-4 C C B B。
状语从句知识点总结及经典习题(含答案)
译林版中考英语九年级英语状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1． Talk to your teacher and you will get help ________ you have a problem.A．unless B．ifC．until D．so【答案】B【解析】试题分析：unless除非，如果不； if是否，如果；until直到；So因此。
句意：如果你有问题，给你的老师说说，你就会得到帮助。
故选B。
考点：考查连词辨析2．---Mom, shall we have supper now?---Oh, we won’t have supper_______ your dad comes back.A．until B．since C．while D．after【答案】A【解析】试题分析：句意：-妈妈，我们现在吃晚饭好吗？ -哦，直到你爸爸回来我们才可以吃晚饭。
until直到；since自从；while当……的时候；after在……之后。
Not…until直到……才，是一个固定句型，所以选A。
考点：考查连词。
3．She eats ice-cream a lot, ________it isn't good for her.A．after B．until C．because D．although【答案】D【解析】【详解】句意：她经常吃冰淇淋，虽然这对她不好。
考查连词辨析。
A. after在……以后，表时间；B. until直到，表时间；C. because因为，表原因；D. although尽管，表让步。
本句前后是让步关系，需用although连接；根据句意语境，可知选D。
4．--- What was the party like?--- Wonderful. It’s years ____ I enjoyed myself so much.A．since B．after C．when D．before【答案】A【解析】试题分析：句意：聚会怎么样？太精彩了，好多年了我没玩的这么高兴过。
中考九年级英语状语从句知识点总结及经典习题(含答案)
中考九年级英语状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．They will lose the game _______ they try their best.A．unless B．once C．since D．after【答案】A【解析】【详解】试题分析：句意:他们会输掉比赛的，除非他们尽自己最大的努力。
lose the game 输掉比赛，try one’s best 尽最大的努力。
A. unless 除非； B. once 一次；C. since 因为； D. after 在…之后，根据题意可知此句是unless引导的条件状语从句，故选A。
2．Many people do not realize the importance of health ______ they have fallen ill.A．until B．while C．when D．after【答案】A【解析】试题分析：句意：一些人直到失去了健康才意识到它的重要性。
本题考查的是not…until 句型，“直到……才”。
For为了；but 但是；as 作为。
故选A。
考点：考查连词的用法。
3．— What do you think of your junior middle school life?— I think it is colorful, I’m always busy.A．though B．while C．until D．because【答案】A【解析】【详解】本题考查：副词辨析。
选项分析：A. though虽然，尽管。
B. while虽然；然而。
C. until 在…以前；直到…时。
D. because因为。
综合分析前后句，可知此处填 though最合适，完整句意为：— What do you think of your junior middle school life?你觉得你的初中生活怎么样?—I think it is colorful, though I’m always busy.我认为它是丰富多彩的，虽然我总是很忙。
(完整)初中状语从句讲解及习题附答案
（一）状语从句概括定义状语从句用作状语，是起副词作用的句子。
地点状语从句能够放在主句以前，也能够放在主句以后，时间、条件、原由和退步状语从句放在句首时需要用逗号和主句分开。
分类依据其作用能够分为时间、地址、原由、条件、目的、退步、方式和比较等状语从句。
作用它能够修饰谓语、非谓语动词、定语、状语和整个句子。
（二）状从句解1.状从句引用法when意“当⋯的候”。
When引从句的能够是延性，也能够是瞬。
而且when 有表示“就在那”while意“在⋯的候，在⋯ 的同”。
While 引从句的必是延性的，生，并主句和从句的作同生（或许相）。
While有能够表示比。
示例A liar is not believed when he speaks the truth.者真也没有人相信。
When he arrives , I’ll call you. When you laugh and smile, your body relaxes.While I was standing at the window, I saw several boys running along the street.While John was watching TV, his wife was cooking.as意“一⋯一⋯”。
As 引的作是延性的，生短，一般用于主句和从句作同生； as 也能够一前一后。
after意“在⋯以后”。
表示主句作生在从句作以后。
主句与从句的作关系与before 引的从句相反。
before意“在⋯以前”。
引的从句不用否认形式的，而且当 before 引的从句位于主句以后，有成“就，才”。
当主句用未来，从句是用在；假如 before 引的从句用的是去，主句多用去达成，以便体作的先后。
till意“直到”。
一般状况下能够和 until 互。
假如主句中的是瞬，必用否认形式；假如主句中的是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.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.You can’twatch TV beforeyou finish your homework. Before it ended, the theatre was almost empty.My father had left for Canada just before the letter arrived.She didn’t even know that it was an earthquake till she saw a shaking ( moving from side to side) light.The fireman worked very hard延性，用一定和否认形式都能够，但表达的意思不一样。
人教版中考英语中考英语总复习状语从句知识点总结及经典习题(含答案)
人教版中考英语中考英语总复习状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．If you don’t go to the meeting tomorrow, ________ ?A．he will, too B．he won’t, either C．he does, too D．he doesn’t either 【答案】B【解析】【详解】句意：如果明天你不去开会，他也不去。
考查时态。
If引导时间状语从句，遵循“主将从现”原则，从句是一般现在时，所以主句要用将来时，排除C和D，too意为“也”，用于肯定句句末，either意为“也”，用于否定句句末，排除A，故答案选B。
2．—I’m afraid the class has begun.—Don’t worry. It ________ until the bell ________. A．doesn’t begin; rings B．won’t begin; will ringC．won’t begin; rings D．doesn’t begin; will ring【答案】C【解析】试题分析：句意：-恐怕课已经开始了。
一不要担心。
直到铃声响了才会开始。
前面是主句，会议还没开始，所以用一般将来时；后面是until引导的时间状语从句，所以要用一般现在时代替一般将来时。
所以选C。
考点：考查动词时态。
3．I won't go he comes back.A．until B．while C．when D．why【答案】A【解析】句意：直到他回来，我才走。
A. until 直到； B. while当---时候； C. when当---时候； D. why为什么；not---until--- 直到---才---；故选A4．---Mom, shall we have supper now?---Oh, we won’t have supper_______ your dad comes back.A．until B．since C．while D．after【答案】A【解析】试题分析：句意：-妈妈，我们现在吃晚饭好吗？ -哦，直到你爸爸回来我们才可以吃晚饭。
人教版中考英语复习专题状语从句知识点总结及经典习题(含答案)
人教版中考英语复习专题状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1．____ I was in the US, I made a lot of American friends.A．While B．Although C．Unless D．Until【答案】A【解析】【详解】句意：当我在美国的时候，我交了很多美国朋友。
考查连词辨析。
while当……的时候，表时间；although尽管，表让步；unless除非，表条件，相当于if not；until直到，与not连用表示“直到……才”。
根据I made a lot of American friends我交了很多美国朋友，可知是在美国的时候，故选A。
2．—How do you like your new school, Kate?—It is very clean and beautiful ____it is a bit small.A．if B．since C．unless D．although【答案】D【解析】试题分析：句意：--凯特，你觉得你的新学校怎么样？--尽管它有点小，但是它非常的干净，美丽。
if,如果，表示条件关系；since,自从……，表示时间关系；unless,如果不，引导条件状语从句；although，尽管，虽然，表示让步关系，结合句意，关系D。
考点：考查连词的用法。
3．________ there is danger on the internet, online insurance is still popular among the young. A．Unless B．Though C．Since D．Until【答案】B【解析】【详解】句意：虽然网上存在危险，但网上保险在年轻人中仍然很流行。
考查连词辨析。
A. Unless 除非，如果不，引导条件状语从句；B. Though尽管，虽然，引导让步状语从句；C. Since 自….以来，既然，由于，引导时间状语从句和原因状语从句；D. Until：到…为止，在…以前，直到，引导时间状语从句。
人教版中考英语中考英语总复习状语从句-知识点归纳与练习含答案解析
人教版中考英语中考英语总复习状语从句-知识点归纳与练习含答案解析一、初中英语状语从句1．—Have you heard of the latest news about WIFI?—Yes. When the 5G age , the Internet speed will be 100 times as high as 4G.A．come B．comes C．will come D．is coming【答案】B【解析】【详解】句意：——你听说过无线网络的最新消息吗？——是的。
到了5G时代，网速将是4G的100倍。
A. come动词原形； B. comes第三人称单数形式； C. will come一般将来时态；D. is coming现在进行时态，此句是when引导的时间状语从句，遵循主将从现的原则，此空应填谓语动词的第三人称单数形式，此空故填comes。
2．Tony has had to cook by himself ________ his mother went on business to Guangzhou. A．since B．after C．during D．when【答案】A【解析】【详解】句意：自从妈妈去广州出差以来，托尼不得不自己做饭。
A. since从……以来；B. after在……之后；C. during 在……期间；D. when当……时候。
since后跟时间状语从句时，表示的是到目前为止的时间段，从句时态为一般过去时，而主句的时态为现在完成时，故正确答案为A。
3．---Could you give me some advice on travelling?---Take a map with you _______ you have a guide or you know the city very well.A．if B．unless C．although D．because【答案】B【解析】句意：--你能给我一些关于旅行的建议吗？--如果没有向导或者对城市不很了解，那么就随身带着一张地图。
中考复习专题状语从句知识点梳理及经典练习(超详细)含答案解析
中考复习专题状语从句知识点梳理及经典练习(超详细)含答案解析一、初中英语状语从句1．I hate traveling by air______you usually have to wait for hours before the plane takes off. A．because B．though C．until D．so that【答案】A【解析】【详解】句意：我讨厌坐飞机旅行，因为通常要等上几个小时才能起飞。
A.因为，B.虽然，C.直到，D.为了，表目的。
根据前后句子之间关系可知，有因果关系，故选A。
【点睛】这四个选项都是连词，但是意思和用法各不相同。
because 因为，引导原因状语从句；though虽然，尽管，引导让步状语从句，类似的词还有although, even though, even if；until常和not连用，not …..until…意思是直到….才…..,引导时间状语从句； so that为了，表示目的，引导目的状语从句。
2．Tony has had to cook by himself ________ his mother went on business to Guangzhou. A．since B．after C．during D．when【答案】A【解析】【详解】句意：自从妈妈去广州出差以来，托尼不得不自己做饭。
A. since从……以来；B. after在……之后；C. during 在……期间；D. when当……时候。
since后跟时间状语从句时，表示的是到目前为止的时间段，从句时态为一般过去时，而主句的时态为现在完成时，故正确答案为A。
3．________ I came back home yesterday, my mother was looking ________ a magazine. A．While; through B．When; through C．When; around【答案】B【解析】【详解】句意：昨天当我回到家的时候，我的妈妈正在浏览一本杂志。
中考英语常用语法知识——状语从句知识点总结(含解析)
一、选择题1．Too much sugar ________ bad for our teeth.A．be B．am C．is D．are C解析：C【解析】【分析】【详解】句意：过多的糖对我们的牙齿有害。
考查be动词用法，A. be原形；B. am主语为第一人称单数；C. is主语为单数或不可数名词；D. are主语为复数，主语为“sugar 不可数名词”，谓语应该用is，故选C。
【点睛】Be动词用法口诀：我用am，你用are，is连接他，她，它。
单数名词用is，复数名词全用are。
变疑问，往前提，句末问号莫丢弃。
变否定，更容易，be后not莫忘记。
疑问否定任你变，句首大写莫迟疑。
2．—Today Beijing Duck is served!A number of students ___________in the dining hall.—Let me see. The number of them _________about 400.A．are; is B．is; are C．are; are D．is; is A解析：A【解析】【详解】句意：—今天桌上有北京烤鸭！餐厅里有若干学生。
—让我想想。
学生的数目大约是四百。
考查主谓一致。
前一句a number of students意为“许多学生”，表示复数意思，第一空格be 动词用are；第二空格前的主语the number of them意为他们的数量表示单数，be动词用is，故选A。
3．—Where __________ Tony _________ from？—England．（）A．is ， / B．do ， comeC．does ， come D．both A and C D解析：D【解析】【详解】句意：——托尼来自哪里？——英国。
考查主谓一致和动词短语。
根据句意理解可知，这里表达的是“来自”，英语可以表达为be from或者come from，而句子主语是Tony，单数名词，所以动词应该用三单形式，应该是is from或者comes from，变成疑问句直接把is提前或者加助动词does，变成does … come from，故选D。
中考英语总复习状语从句知识点梳理及经典练习(超详细)含答案解析
中考英语总复习状语从句知识点梳理及经典练习(超详细)含答案解析一、初中英语状语从句1．How can we improve our environment a lot each of us does something useful for it? A．while B．until C．after D．unless【答案】D【解析】【详解】句意：除非我们每个人都做一些有益的事情，否则我们如何才能大大改善我们的环境呢?考查连词辨析。
while当……的时候，表时间；until直到，表时间；after在……之后，表时间；unless除非，表条件。
本句是条件状语从句，根据句意结构和语境，可知选D。
2．_______riding shared bikes is an easy way to travel, it also causes some problems. A．Although B．If C．Until【答案】A【解析】【详解】句意：虽然骑共享单车是一种简单的旅行方式，但也会引起一些问题。
A. Although尽管，虽然；B. If如果；C. Until直到。
根据下文it also causes some problems.可知上文是Although 引导的让步状语从句。
根据题意，故选A。
3．There are fewer and fewer tigers in India. The situation will continue _______ humans stop hunting them for their fur and bones.A．if B．unless C．because D．since【答案】B【解析】试题分析：句意：印度有越来越少的老虎。
如果人类不停止为了虎皮和虎骨猎杀老虎，情况会继续。
A.if如果，表示条件；B.unless如果不，表示相反的条件；C.because因为，表示原因；D.since自从，表示时间的起点；既然，表示原因。
人教版中考英语专项训练状语从句X知识点总结及经典习题(含答案)含答案解析
人教版中考英语专项训练状语从句X知识点总结及经典习题(含答案)含答案解析一、初中英语状语从句1．I didn't realize he was a famous scientist you told me.A．until B．because C．since【答案】A【解析】句意：直到你告诉我，我才知道他是一位出名的科学家。
A. until到…为止；B. because 因为；C. since既然，因为。
本题考查固定句式not…until…直到……才。
其用法是如果（主）句中的谓语是终止性动词，应采用“not…until”结构，意为“到……时候才” 根据句子结构，结合选项，故选A。
2．一When did you leave your office yesterday?一 I finished the project.A．Until B．While C．When D．Not until【答案】D【解析】句意：昨天你什么时候离开你的办公室的？——直到我完成那个任务。
本题考查连词。
A. Until 直到···时候才结束，要与延续性动词连用；B. While 当···时候；C. When 当···时候；D. Not until直到···时候才开始，与非延续性动词连用；句子中finished（完成）是非延续性动词，故选D3． the journey was tiring，Jeff thought it was worth both the time and the money.A．As B．Since C．Unless D．Although【答案】D【解析】【详解】句意：虽然旅途很累，杰夫认为时间和金钱都值得。
A. As当……的时候；B. Since 自从；C. Unless除非；D. Although尽管。
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中考复习专题状语从句知识点总结及经典习题(含答案)一、初中英语状语从句1． the journey was tiring，Jeff thought it was worth both the time and the money.A．As B．Since C．Unless D．Although【答案】D【解析】【详解】句意：虽然旅途很累，杰夫认为时间和金钱都值得。
A. As当……的时候；B. Since 自从；C. Unless除非；D. Although尽管。
根据下文Jeff thought it was worth both the time and the money.可知上文是让步状语从句，这里用Although引导。
根据题意，故选D。
2．--- I wonder if Tina to China next week.--- If it ，she will come.A．will come；won’t rain B．comes；doesn’t rainC．comes；won’t rain D．will come；doe sn’t rain【答案】D【解析】【详解】句意：——我想知道蒂娜下周是否会来中国。
——如果不下雨，她就会来。
根据语境推测对话的语境是“——我想知道蒂娜下周是否会来中国。
——如果不下雨，她就会来。
”，第一个设空处的if意思是“是否”，引导宾语从句，主句是一般现在时，从句根据时间状语next week确定用一般将来时，一般将来时的构成是：主语+will+动词原形，排除B/C；第二个设空处考查含有if引导的条件状语从句中主句的时态，在含有条件状语从句中的复合句中，时态遵循“主将从现”的原则，即：主句用一般将来时，从句使用一般现在时表将来，表示“不下雨”应借助于助动词does，故选D。
3．You are sure to fail the exam ________ you study hard.A．if B．unless C．since D．that【答案】B【解析】试题分析：句意：如果你不努力学习，你一定会考试不及格的。
A.if如果；B. unless如果不；C. since自从；结合句意，故选B。
考点：考查连词的用法。
4．--Where is the comic book?--I brought it to you ________you were in the reading room yesterday.A．when B．if C．because D．before【答案】A句意：-漫画书在哪里？-昨天当你在阅览室的时候我就拿给你了。
when当…时候；if如果，引导条件状语从句；because因为，引导原因状语从句；before在…之前，引导时间状语从句。
根据句意可知，这里表示“当你在阅览室的时候”，故应选A。
5．— Do you think Jack will catch up with us?— I believe so._______ he loses himself in computer games.A．If B．Unless C．Or D．But【答案】B【解析】【详解】句意：—你认为杰克会赶上我们吗? —我认为会，除非他沉迷于电脑游戏。
A. If如果；B. Unless除非；C. Or否则；D. But但是。
根据本题语境，可知，回答为如果他不沉迷于电脑游戏，他就能赶上我们，如果不，即为除非。
故选B。
6．Now most fami lies have only one child _____ our country’s one-child policy.A．so B．because C．because for D．because of【答案】D【解析】【详解】句意：由于我们国家的独生子女政策，现在大多数家庭只有一个孩子。
so 所以；because 因为，引导原因状语从句；because for 不符合英语表达习惯；because of 因为，由于，后面不能加句子，只能加词或短语，所以选D。
7．The nurse won't leave her patients________she's sure they are all taken good care of. A．unless B．because C．since D．if【答案】A【解析】句意：这个护士不会离开她的病人，除非她确定病人们都被照顾得很好。
because因为，引导原因状语从句；since自从，引导时间状语从句；既然，引导原因状语从句；if如果，引导条件状语从句；unless除非，如果不，引导条件状语从句。
根据句意可知，这里考查的是从属连词unless，故选A。
8．—It’s reported that the plastic pollution is harming the ocean.— I saw the report in the newspaper at breakfast. It will be worse _________ stronger laws are made.A．since B．after C．until D．unless【答案】D【解析】句意：--据报道，塑料污染正在侵害着海洋。
--早餐时，我在报纸上看到了这篇报道。
除非有更强有力的法律制定出来，否则情况会越发恶劣。
考查连词。
A. since自从；B. after 在……之后；C. until直至，直到……时（为止）；D. unless除非。
unless引导条件状语从句时,其谓语要用现在时表示将来意义。
且结合句意，前后意思对比。
故选D。
9．I enjoy fresh air so always sleep with the window open ______ it is really cold．A．unless B．when C．if D．Since【答案】A【解析】【分析】【详解】句意：我喜欢新鲜空气，因此我总是让窗户开着，除非真的很冷。
考查连词辨析。
A．Unless除非，相当于if not，表条件；B．When当……的时候；C．If如果，表条件；D．Since自从。
根据I enjoy fresh air so always sleep with the window open 可知除非真的很冷否则总是让窗户开着，unless符合题意，故选A。
10．— Is everyone here today?— No, Lucy is at home ________ she has got a high fever.A．because B．if C．until D．unless【答案】A【解析】【详解】句意：——今天大家都到齐了吗？——没有，露西因为发高烧呆在家里了。
A. because因为；B. if如果；C. until直到……才；D. unless除非，如果不。
露西呆在家里没有来是因为发高烧的原因。
故答案为A。
11．____ I was in the US, I made a lot of American friends.A．While B．Although C．Unless D．Until【答案】A【解析】【详解】句意：当我在美国的时候，我交了很多美国朋友。
考查连词辨析。
while当……的时候，表时间；although尽管，表让步；unless除非，表条件，相当于if not；until直到，与not连用表示“直到……才”。
根据I made a lot of American friends我交了很多美国朋友，可知是在美国的时候，故选A。
12．I didn’t believe I co uld do it ____ I got to the top of Mount Tai.A．unless B．until C．after D．as【答案】B【解析】试题分析：句意：直到我到达泰山顶上我才相信我能成功。
A. unless如果不，除非，引导条件状语从句； B. until 直到，引导时间状语从句； C. after 在……后，引导时间状语从句； D. as因为，由于，引导原因状语从句。
not …until直到……才，结合句意，故选B。
考点：考查连词的用法。
13．_______it’s a public holiday today, some firefighters in our city are still on duty. A．Although B．Once C．If【答案】A【解析】【详解】句意“尽管今天是公共节假日，但是我们城市的一些消防员仍然在岗位值班”。
A.尽管（引导让步状语从句）；B.一……就……（引导时间状语从句）；C.如果（引导条件状语从句）。
根据句意可知，今天是公共假日，本应该休息，但是消防员仍然在岗值班，表示让步，故选A。
14．---Can students go online during lessons?---They can’t ________ it is for that lesson.A．if B．unless C．until D．while【答案】B【解析】【详解】句意：——学生上课时能上网吗？他们不可以，除非为了上那堂课。
本题考查连词辨析，A.如果；B.除非；C.直到；D.当……时候。
答语是条件状语从句，根据句意结构可知，需要unless连接，故选B。
15．I'm sure dreams don't work you do.A．if B．until C．when D．since【答案】B【解析】【详解】句意：我相信梦想在你做之前是不会实现的。
考查连词辨析。
if如果，表条件；until直到，表时间，多与not连用表示“直到……才”；when什么时候，表时间；since自从，用于表示一段时间。
本句是“not …until”结构，根据句意结构和语境，可知选B。
16．—Did you catch the early bus this morning?—Yes. The bus started to move _ I got on it.A．though B．before C．as soon as D．as if【答案】C【解析】句意：-你今天早上赶上早班车了吗？——是的。
我一上车，车就开动了。
though尽管，引导让步状语从句；before在……之前，不符合对话的意思；as soon as一……就；as if犹如，好像。
结合下面的回答Yes，说明说话人赶上了早班车，所以选C。
17．-- Can students go online during lessons?-- They can ________ it is for that lesson.A．ifB．orC．soD．but【答案】A【解析】句意：——学生可以在课上上网吗？——如果是为了上课，他们可以上网。