课件12张PPT。第39讲 状语从句广西专用外研版中考主要考查时间、原因、条件、比较、结果和让步状语从句的基本用法，尤其应注意当主句为一般将来时时，时间和条件状语从句用一般现在时表将来。高频考向一 表时间和原因的状语从句
①时间状语从句表示主句动作发生的时间。引导这种从句的连词有when，before，after，as，while，till，until，since等；起连接作用的短语有as soon as等。在时间状语从句中，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表将来。如：
I'll let you know as soon as she comes.她一来，我就会让你知道。
Jane didn't go to bed until she finished her homework.简直到完成作业后才睡觉。
②原因状语从句用来说明原因。引导这种从句的连词有because，since，as等。这三个词的语气由because到as逐渐减弱；because回答why提出的问题。如：
I won't go with you because I am busy doing my homework now.我不会跟你去，因为现在我正忙着做作业。
As the weather was fine，we decided to play football.天气很好，我们决定去踢足球。【例1】Our Chinese teacher didn't go to bed ________ he finished his work last night.(2016，重庆)
A．if B．until C．since D．because
解析：句意为“昨天晚上我们的语文老师直到完成了他的工作才去睡觉。”if“如果”；until“直到”；since“自从”；because“因为”。
答案：____
【例2】 Mark isn't coming to the concert ________ he has got too much work to do.(2016，桂林模拟)
A．so B．until C．although D．because
解析：so“因此”；until“直到”；although“虽然”；because“因为”。“太多工作要做”是“没有来音乐会”的原因。
答案：____BD高频考向二 表条件和让步的状语从句
①条件状语从句常用连词if，unless等引导。当主句是一般将来时或祈使句表示将来的意义时，if，unless引导的条件状语从句用一般现在时表将来。如：
Will you come if he comes here？如果他来，你会来吗？
If it rains tomorrow，we'll stay at home.如果明天下雨，我们会待在家里。
②让步状语从句常用连词though，although引导。注意though/although与but在句中不能同时出现。如：
We had to go on walking though we were really tired.尽管我们确实很累了，但是我们不得不继续走。
Although he is not rich，he lives happily.尽管他不富有，但是他生活得很幸福。【例3】—You bought the car about ten years ago?
—Yes.________ it's old，it still runs well.
A．Because B．Since
C．Although D．But
解析：考查让步状语从句。句意为“尽管旧了，但它仍然运转很好”。because“因为”，since“既然”，although“尽管”，but“但是”。
答案：____
【例4】 I enjoy fresh air so I always let the window open ________ it is really cold.(2017，南宁预测)
A．unless B．when C．if D．since
解析：句意为“我喜欢新鲜空气，因此我总是让窗户开着，除非真的很冷。”故unless“除非”符合题意。
答案：____CA【例5】—Mary，could you tell me if your mother ________ our school sports meeting tomorrow？(原创题)
—I think she will come to school if she ________ free.
A．will take part in；will be B．takes part in；is
C．will take part in；is D．takes part in；will be
解析：考查if引导的宾语从句及条件状语从句的用法。问句中是由if引导的宾语从句，时间状语为 tomorrow，故用一般将来时；答语中是由if引导的条件状语从句，主句用将来时，从句用一般现在时。
答案：____C高频考向三 表目的和结果的状语从句
①目的状语从句表示主句的动作发生的目的，这种从句用连词so that，in order that等引导。so that或in order that引导的目的状语从句中常常要用情态动词may，might，can，could，will，would或should等。如：
Please speak loudly so that everyone can hear you.请大声说，以便每个人听见你说的话。
He got up very early this morning in order that he could catch the first bus.为了能赶上第一班公交车，他早上起得很早。
②结果状语从句表示主句的动作所引起的结果，这种从句由such...that，so...that，so that等引导。such修饰名词；而so修饰形容词或副词。如：
The film isn't so interesting that nobody likes it.这部电影不是那么有趣，没人喜欢它。
It was such a cold day that nobody wanted to go out.天气那么冷，没人想出去。【注意】so...that...句型的否定形式可用简单句too...to...或not...enough to代替。如：
He is so young that he can't go to school.
＝He is too young to go to school.
＝He is not old enough to go to school.他太小了，不能去上学。【例6】—You study ________ hard ________ you're sure to pass the exam.
—Thank you for saying so.(2015，福州)
A．enough；to B．as；as
C．so；that
解析：enough...to“足够……做……”；as...as...“和……一样……”；so...that...“如此……以至于……”。第一句句意为“你学习如此努力以至于你肯定能通过考试。”“谢谢你这么说。”
答案：____C【例7】I looked through my test paper again and again ________ I wouldn't make any mistakes.(2016，威海)
A．so B．because C．so that
解析：so意为“所以，因此”，表结果。because意为“因为”，引导原因状语从句。so that意为“为的是……，以便”时，引导目的状语从句；意为“因此”时，引导结果状语从句。根据空格前的“我浏览了我的试卷一遍又一遍”可推知，“为的是我不犯错误”。
答案：____C考点跟踪突破39 状语从句
1．—Could you please give the magazine to Mario?
—Sure.I'll give it to him __D__ I see him.(2016，贵港)www.21-cn-jy.com
A．as many as B．as much as
C．as often as D．as soon as
2．—Why were you late for school this morning，Tom?
—I was about to go to school __D__ it began to rain.(2016，玉林)21·cn·jy·com
A．since B．while C．as D．when
3．Sam won't go to the beach with us unless he __C__ time this Saturday.(2016，梧州)
A．will have B．had
C．has D．is having
4．—I think I'll take a bus to the meeting.(2016，长沙)21教育网
—The bus？If you __A__，you will be late.
A．do B．have done C．will do
5．__C__ he was very tired，he continued working in his office.(2016，泉州)
A．Because B．Since C．Although
6．We __A__ for a picnic if it ________ rain this Sunday.(2016，邵阳)
A．will go；doesn't B．will go；won't
C．go；doesn't
7．Lu Han is __A__ an excellent actor ________ most teenagers like him.(2016，龙东)
A．such；that B．so；that C．too；to
8．Look out！Look at the traffic lights __A__ crossing the road.(2016，永州)
A．before B．after C．since
9．Jenny didn't go to bed __D__ her mother came home last night.(2016，南充)
A．as soon as B．if C．while D．until
10．—I really want to join the square dance.Can I learn the dance well?
—Yes，Mom！Nothing is impossible __A__ you put your heart into it！(2016，随州)
A．as long as B．as soon as
C．even if D．unless
11．Could you help me with housework __A__ you are free today？(2016，无锡)
A．since B．though C．unless D．until
12．—Mom，could I watch the game show now?
—Sorry，you can't watch it __D__ you clean your room.(2016，资阳)
A．when B．if C．after D．until
13．It's a good habit to wash your hands __D__ you have meals.(2016，孝感)
A．unless B．while C．when D．before
14．On those foggy days，you could hardly see anything around you __D__ it was at noon.(2017，南宁预测)21世纪教育网版权所有
A．so B．because C．but D．though
15．There __B__ a sport meet next week if it ________．(2016，黔东南州)
A．is going to have; doesn't rain
B．is going to be; doesn't rain
C．is going to be; won't rain
D．is going to have; won't rain
16．—When shall we begin our trip？(2016，西宁)
—We'll set out __A__ our head teacher arrives.
A．as soon as B．ever since
C．so that D．even though
17．Zootopia，the cartoon，is popular __B__ there are many lovely animals in it.(2016，大庆)21cnjy.com
A．though B．because
C．if D．because of
18．Unless the weather __B__，we will have to cancel the picnic.(2016，广东)
A．improve B．improves
C．improved D．will improve
19．He is training very hard __D__ he can win a gold medal in the Olympics.(2016，黄石模拟)2·1·c·n·j·y
A．even if B．such that
C．even though D．so that
20．Mother was worried because her son was ill，especially __C__ Father was away in France.【来源：21·世纪·教育·网】
A．since B．for C．when D．before
21．He always thinks I'm wrong，__A__ I may say.
A．whatever B．however
C．whenever D．wherever
22．—How long have you been away from the village?
—Well，it is ten years __A__ I left there.
A．since B．before
C．after D．while
