2026届高考英语二轮复习：状语从句 课件 (2)(共32张PPT)

(共32张PPT)
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状语从句
状语从句
定义：在复合句中作状语，修饰主句中的动词、形容词或副词。
结构：从属连词 + 完整句子（从句） + 主句
作用：说明时间、地点、原因、条件等。
1.时间状语从句
类别 作用 注意点 例句
when (at or during the time that)既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生，也可以先后发生。 最常用的，即可引导短暂性动词，也可引导持续性动作。从句动作发生于主句动作之前只能用 when He became sad and angry when he saw pictures of hungry people in Africa.
Whenever you find an interesting book in a bookshop,buy it at once.
while 表示“当……的时候”或在某一段时间里”。主句中的动作或状态在从句中的动作过程或状态中发生。在 when 表示 a period of time 时，两者可以互换。while 强调动作本身。 从句中的动词一 般要用延续性动词。 While others are reading books silently, please don't speak loudly.
as 表示“当.时候”，往往和 when/while 通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。可译为“一边……-边”或“随着……"。 主句和从句的时态通常一致。 All the jury's eyes were on himas he continued.
Before句型
It+ will/would/may be + 时间段 + before...“要过多久才…”It will/would not be +时间段+ before... “不久就…”
It will not be long before we know the result of the experiment.
It was +时间段+ before ... “过了(多长时闻)才.It was not +时间段+ before .. “不久就..”“没过(多长时间)就.….”
It was some time before we realized the truth.
含义 注意点 例句
before 在…之前 ①有“才……"还没来得及”的含义 before 引导的从句不用否定式的谓语 ②before 引导的从句不用否定式的谓语。 He had lived in Japan for fifty years before he moved here.
after 在…之后 before和 after还可以作为介词用后接名词或动名词。 After he had lived in Japan for fifty years, he moved here.
Since句型
“lt is+一段时间+since从句”表示“自从...时候已经多久了”since引导的从句的谓语动词若是延续性动词，常理解为某一状态的终止;若是终止性动词，则理解为某一动作的开始。如:
①It is three years since the war broke out(终止性动词)自战争爆发以来已有三年了。
②It is three years since lsmoked a cigar.(=since l stopped smoking a cigar.)(延续性动词)我不吸烟已有三年了。
[ Until/Till 】
Until 和 till 都表示“直到”,它们唯一的区别是 till 不能置于句首。
肯定句:主句的谓语动词必须是延续性动词的肯定式，意为“某动作一直延续到某时间点才停止”。如:
He remained there until/till she arrived.
You may stay here until/till the rain stops.
否定句:主句的谓语动词必须是非延续性动词，意为“某动作直到某时间才开始"。如:He won't go to bed till/until she returns.
not......until 句型中的强调和倒装用法。如:直到你告诉我，我才知道这件事。
1. 普通版: i had no idea of it until you told me./l didn't have any idea of it until youtold me.
2. 强调句型: it was not until you told me that i had any idea of it.
3. 倒装句型: Not until you told me did l have any idea of it.(not until置于句首，主句要倒装)
tips:在使用 not..until句型的时候，倒装和强调不能同时使用。
一…就
(1)as soon as, immediately,directly,instantly,the moment, the minute 和the instant 都表示从句的动作已发生，主句的动作随即就发生，常译为“-……就…"。如:① The moment i heard the voice, l knew father was coming.② The boy burst into tears immediately he saw his mother.
(2)no sooner...than..; hardly/scarcely...when..也译为“-…就……”但其表示主句的动作一发生，从句的动作随即就发生。如:
① I had hardly got home when it began to rain.
② We had no sooner arrived at the station than the train left
2.原因状语从句
【含义】
在主句中充当原因状语的从句。通常由从属连词 because,as,since,now that,in that 引导。其中，because 与其他连词不同，具体如下:
【例句】
① Since you feel tired, you should take a good rest.
② As l didn't know the way,l asked a policeman.
③I was absent from the meeting because l was ill.
④ Now that everybody is here, let's begin our meeting.
⑤ This book is different from that book in that this one is about chemistry andthat one about history.
此外，when(等于 since或considering that ),seeing(that)(由于，鉴于),
considering(that)(考虑到)，given(that)(考虑到)也可以表示原因，如:It was foolish of you to take a taxi when you could walk there in five minutes.
3.条件状语从句
【连词】
引导条件状语从句的从属连词有:if，unless，so/as long as ，in case,on condition that,suppose/supposing(that),provided that 等。
【含义】
(1) 表示“如果、假如”引导的条件句有真实条件句和非真实条件句两种。如:If you are not too tired,let's go out for a walk.
(2)unless 相当于 if not，意思是“除非...…“如果不...就.。如:
Let's go out for a walk unless you are too tired
(3)in case 表示“假如”。同时，它还可以引导目的状语从句，表示“以防万一”如:In case there is a fire,what will we do first
(4)as long as/ so long as表示“只要”。如:
As long as you don't lose heart, you will win her heart
(5)on condition that(条件是),suppose/supposing(that)(假设，如果),provided that(如果)等都可以引导条件状语从句。如:
suppose/supposing(that) they refuse us,who else can we turn to for help
4.目的状语从句
【连词 】
引导目的状语从句最常用的是 so that(从句谓语常有情态动词),in order that,in case(以防万一)，for fear that(以防，以免)，lest等。 如:
① You must speak louder so that /in order that you can be heard by all.
② He wrote the name down for fear that (lest) he whould forget it.
③ Better take more clothes in case the weather is cold.
注意:in order that 比 so that 更正式,引导的目的状语从句可置于主句前后，而 so that只能跟在主句之后。
5.结果状语从句
【连词 】结果状语从句由 so..that..和 such..that..等引导，意为“如此…以致于…”其结构形式为:
(1)so+形容词/副词 +that 从句
so + 形容词 + a/an + 可数名词单数形式 +that 从句
so+many/much/few/little(少)+名词+that 从句
(2)such+ a/an + 形容词 + 可数名词单数形式 +that 从句
such + 形容词 + 可数名词复数形式/不可数名词 +that 从句
such+ a lot of/lots of+ 名词 + that 从句
举例:他是一个如此诚实的工人，以至于我们都相信他。
① He is such an honest worker that we all believe him.
② He is so honest a worker that we all believe him.
6.地点状语从句
【连词 】(1)在复合句中充当表示地点的从句。它由从属连词 where，wherever 等引导。从句既在主句之前(通常为抽象意义)也可在主句之后，意为“在...地方”，““无论在…地方”
① Where he had mistakes, he admitted these willingly.
②They followed the taxi wherever it went.
(2)有时地点状语还可以由anywhere,everywhere 引导。
① He would live with his grandmother anywhere she lived.
② Everywhere they lived, they were warmly received.
7.方式状语从句
【连词 】通常由(just)as,as if,as though引导。
(1)as 从句带有比喻的含义，意思是“正如...”，“就像..”，多用于正式文体。如:Just as we sweep our rooms, we should sweep backward ideas from our minds
(2)as if,as though 两者意义和用法相同，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。常译作“仿佛……似的”“好像……似的”。如:
① He looks as if(as though) he had been hit by lighting.
② It looks as if the weather may pick up(转晴) very soon.(不用虚拟)
(3)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。如:
① He stared at me as if seeing me for first time.
② He cleared his throat as if to say something.
③ He acted as if nothing had happened.
8.让步状语从句
(1)although，though,as
(2)everif= even though 即使。如:
We'll make a trip even though the weather is bad.
(3)while 引导让步状语从句时相当于 although，一般要位于句首。如:
While llike the color,i don't like the shape.(4)no matter+疑问词 =疑问词-ever
含义为“……都…;不管…都…”，所引导的让步状语从句可以互换。如:No matter what happened, he would not nind.=Whatever happened,he would not mind.
9.比较状语从句
【连词 】比较状语从句常用“比较级+than’rthe more ... the more'等引导。“so(as)... as”如:
①l have made a lot more mistakes than you have.
② He smokes cigarettes as expensive as he can afford.
③ The busier he is, the happier he feels.
As·as 结构中若想加名词，应为:
(1)as+形容词+(名词结构，即冠词+名词)+as
(2)as much+不可数名词+as
(3)as many+复数名词+as
如:
① She is as good a teacher as her mother
②You've made as many mistakes as l have.
③l haven't got as much money as l thought.
练习题
一、选出正确连词填空
1. ______ I finish my homework, I can’t play video games. (Unless/Although)
2. She cried ______ she heard the bad news. (because/so that)
3. ______ you practice daily, your English will improve. (If/Until)
4. He spoke loudly ______ everyone could hear. (while/so that)
5. ______ it was raining, we still went hiking. (Because/Although)
答案与解析
1. Unless（条件：不完成作业就不能玩）
2. because（原因：听到坏消息而哭）
3. If（条件：如果练习就会进步）
4. so that（目的：大声说话是为了让人听到）
5. Although（让步：尽管下雨仍去徒步）
二、选择最佳连词（注意近义连词区别）
1 ______ I was cooking, the doorbell rang. (While/As soon as)
2. ______ she studies hard, she will pass the exam. (Unless/As long as)
3. He acted ______ he knew nothing. (so that/as if)
4. ______ you go, keep your phone charged. (Wherever/Whereas)
5. I’ll call you ______ I arrive at the airport. (until/when)
答案与解析
1. While（持续动作“做饭”被门铃打断）
2. As long as（只要努力学习就能通过）
3. as if（方式：装作不知情的样子）
4. Wherever（地点：无论去哪里）
5. when（时间：到达机场时打电话）
三、纠正句子中的错误（每句有1处连词或时态错误）
1. She will be happy if you will come to her party.
2. Because he was tired, so he went to bed early.
3. I can’t sleep unless the light is off. (逻辑错误)
4. He talks like he is the boss. (正式语法语境)
5. Although it’s expensive, but I bought it.
答案与解析
1. if you come（条件从句用一般现在时表将来）
2. 删除Because或so（二者不可连用）
3. unless → if（原句逻辑反了：“除非关灯我才能睡”→应改为“如果开灯我就睡不着”）
4. like → as if（正式语法中需用as if引导方式状语）
5. 删除but（although不与but连用）
四、用括号所给连词合并两个句子
1. He missed the bus. He woke up late. (because)
2. It might rain. Take an umbrella. (in case)
3. She was sick. She attended the meeting. (even though)
4. You heat ice. It melts. (when)
5. The room is small. It feels cozy. (although)
答案示例
1. He missed the bus because he woke up late.
2. Take an umbrella in case it rains.
3. Even though she was sick, she attended the meeting.
4. When you heat ice, it melts.
5. Although the room is small, it feels cozy.
五、根据上下文补全状语从句
1. I always keep a first-aid kit in my car ______ (目的：应对紧急情况).
2. ______ (条件：没有你的帮助), I couldn’t have finished this project.
3. The movie was ______ scary ______ (结果：我不敢闭眼).
4. ______ (时间：她一出机场), we recognized her immediately.
5. ______ (让步：尽管风险很高), they decided to invest.
答案示例
1. in case there is an emergency
2. If you hadn’t helped me（虚拟语气）
3. so...that I couldn’t close my eyes
4. As soon as she stepped out of the airport
5. Even though the risk was high
谢 谢 观 看！