状语从句讲解ppt课件
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高中英语语法课件_状语从句 (共42张PPT)
whether…or…
whether…or…引导的让步状语从句： △ 这种从句也称“选择条件-让步状语从句”，可位于 主句之前或之后，如： 1.Whether you like it or not, you’ll have to do it. 2. We hold that all countries, (whether they are) big or small, (whether they are) rich or poor, should be equal. 3. Whether it rains or snows, I will go tonight. 5. She had to go, whether or not she wanted it.
2) 一些表示时间的名词词组也可引
导时间状语从句。如：the moment, the minute, （一…就）next time （下次）, every/each time （每 次）。 e.g. The moment he comes, I will tell him.
4) as soon as, immediately, directly, instantly 等副词也可引 导状语从句。表示“一…… 就……”。
.
1. I was so familiar with him that I recognized his voice ______ I picked up the phone. A. while B. after C. In case D. the minute 2. How long do you think it will take _______ our product becomes popular with the consumers? A. when B. until C. before D. since
初中英语状语从句课件(共68张ppt)
They had not been married four months before they were divorced. 他们结婚还不到四个 月就离婚了。
After you think it over, please let me know what you decide.你仔细考虑过以后，告诉我你是 怎样决定的。
外星人买纪念品时，那女孩给警察打了电话。(表示主句，从句
的动作同时发生，while后引导的状语从句的动词必须是延续动词不能
是点动词，因为它表示较长时间)
mother was worried because little alice was ill, especially as (when/ while) father was away.
我到那里时，正在下大雨。 ( 动作同时发生，when
可换为as, 但不能换为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，她给我打了电话。( 从句动作
发生在主句之前，注意时态表达，只能用when )
When I got to the cinema, the film had begun.
when
1、还可以表示从句动词的动作在主几句动词的动作"
之前 "或"之后"发生。
2、when=and then; at that moment (正在那个时候)
while 1、用于时间较长时
2、 强调两个动作同时进行，并表示对比时
有时这三个连词可以互换，有时不可以。
It was raining hard when (as) I got there.
After you think it over, please let me know what you decide.你仔细考虑过以后，告诉我你是 怎样决定的。
外星人买纪念品时，那女孩给警察打了电话。(表示主句，从句
的动作同时发生，while后引导的状语从句的动词必须是延续动词不能
是点动词，因为它表示较长时间)
mother was worried because little alice was ill, especially as (when/ while) father was away.
我到那里时，正在下大雨。 ( 动作同时发生，when
可换为as, 但不能换为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，她给我打了电话。( 从句动作
发生在主句之前，注意时态表达，只能用when )
When I got to the cinema, the film had begun.
when
1、还可以表示从句动词的动作在主几句动词的动作"
之前 "或"之后"发生。
2、when=and then; at that moment (正在那个时候)
while 1、用于时间较长时
2、 强调两个动作同时进行，并表示对比时
有时这三个连词可以互换，有时不可以。
It was raining hard when (as) I got there.
高中英语语法总结之状语从句(共37张ppt)
• Difficulties are nothing if we are not afraid of them.如果我们不怕困难，困难就算不了什 么了。
• We shall go there tomorrow unless it rains. = We shall go there tomorrow if it doesn’t rain. 除非下雨，我们明天就去那里。
• Every time I travelled by boat, I got seasick.我 每次乘船都晕船。
• The moment I heard the song, I felt cheerful. 我一听到这首歌，就感到很愉快。
• Next time you come ,you’ll see him.下次你来 的时候，就会见到他。
• We were not tired though (although) we had worked all day.虽然我们干了一天活，但并 不累。
• （2）even if, even though（even if 和even though的意思为“即使”“纵使”有退一步 设想的意味，多用于书面语中）。
• 5、结果状语从句：
• （1）so that，so…that（so that前有逗号为 结果状语从句，so…that的so后面跟形容词 或副词）。
• We turned up the radio, so that everyone heard the news.我们把收音机的音量放大， 大家都听到了新闻。
• Seeing (that) he was badly ill, we sent for the doctor.鉴于他病情严重，我们派人去请医生 去了。
状语从句(43张PPT)初中英语专项复习课件
知识点 2 状语从句的连接词
(3) 强调句型：It is/was not until ... that ...
It was not until the professor came that we began the experiment. 直到教授来了，我们才开始做实验。 易错点：（1）till不可以置于句稿首定，PP而T until可以。 Until you told me I had no idea o稿新f定，itP上.P千T，款海模量板素选材择持总续有更一 直到你告诉我，我才知道这件事款适。合你
It’s three years since he joined the army.(自从......多久了......)
自从他参军已经三年了。
稿定PPT
稿定PPT，海量素材持续更
It's two years since we arrived新h，e上re千. 款我模们板选到择这总有儿一两年了。 款适合你
连词
常用句式
before It will be＋一段时间＋before ... 过……时间才……
since
It will not be/was not long＋before ... 不久就会/没多久就…… It was＋时间段＋befo稿稿r定e定P.P.P.TP，过T海了量素…材…持续(时更 间)才…… It is/has been＋一段时新间，上＋千s款in模c板e选..择. 总(从有一句用一般过去时)
as soon as / no sooner … than / hardly … when / the moment / the minute /（一…就…) since （自从…以来）
知识点2：状语从句的连接词 No. 1 时间状语从句 1．when, while, as 引导的时间状语从句
初中状语从句讲解-PPT
We waited until he came.
2．用于否定句时，主句谓语动词是非延续性动 词，从句为肯定，意为“某动作直到某时间才开 始”。如He won’t go to bed till/until she returns.
3．till不可以置于句首，而until可以。如： Until you told me I had no idea of it.
从他离开后我们没见过面。
※ when: 持续性／非持续性动词都可以 当…时
Are you going to be a sailor when you leave school?
while /when辨析
❖ when/while+doing ❖ When/while reading,he fell asleep. ❖ when+终止性、延续性动词 ❖ while+延续性动词 ❖ When the teacher came in,I was sleeping. ❖ =While /When I was sleeping, the teacher came in. ❖ when (就在这时) ❖ I was sleeping, when someone knocked at the door.
❖ He spoke slowly in order that everyone should understand.
他讲得很慢以便人人能听懂。
1. They set out early _s_o_th_a_t_(_in_o_r_d_e_r _th_a_t_) they might arrive there in time.
While I really don’t like art, I find his work impressive. (while=__a_lt_h_o_u_g_h___)
2．用于否定句时，主句谓语动词是非延续性动 词，从句为肯定，意为“某动作直到某时间才开 始”。如He won’t go to bed till/until she returns.
3．till不可以置于句首，而until可以。如： Until you told me I had no idea of it.
从他离开后我们没见过面。
※ when: 持续性／非持续性动词都可以 当…时
Are you going to be a sailor when you leave school?
while /when辨析
❖ when/while+doing ❖ When/while reading,he fell asleep. ❖ when+终止性、延续性动词 ❖ while+延续性动词 ❖ When the teacher came in,I was sleeping. ❖ =While /When I was sleeping, the teacher came in. ❖ when (就在这时) ❖ I was sleeping, when someone knocked at the door.
❖ He spoke slowly in order that everyone should understand.
他讲得很慢以便人人能听懂。
1. They set out early _s_o_th_a_t_(_in_o_r_d_e_r _th_a_t_) they might arrive there in time.
While I really don’t like art, I find his work impressive. (while=__a_lt_h_o_u_g_h___)
状语从句PPT课件(精讲)
连接词类别
作用 as 表示“当„„的时候”，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。
例句 1.She came up as I was cooking.（同时） 2.The runners started as the gun went off.（几 乎同时） 1.When we were at school, we went to the library every day.（在一段时间内） 2.Sorry，I was out when you called me．（ call为短暂性动词）对不起，你打电话时我 刚好外出了。 3. When I got to the airport，the guests had left．（got to后发生）当我赶到飞机场时， 客人们已经离开了。 1.When ／While ／As we were dancing，a stranger came in．（dance为延续性动词） 。 2.Please don’t talk so loud while others are working.
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 to Y; no … more than; not A so much as B 例句 She 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。
高中英语状语从句课件(共124张PPT)
Business English Certificate
about BEC, I came to realize that what I learnt was really tiny.
当我了解有关BEC相关的信息后，我才发现自 己所学的简直是九牛一毛。
时间状语从句
since 自从……
We haven’t seen each other since we parted. 我们自从分手以后一直没见过面。 备注：主句常用现在完成时，从句 常用一般过去时。
时间状语从句 as when while
时间状语从句
as 正当…… 一 边……一边…… 随着……
1. 表示某事一发生，另一事立即发生
As the suvn. 出ro现ser,istehe fog disv.a消pp失eared.
n. 任期
As he sets out on his second term,
3. 表示两个动作同时发生。 She sang as soon as she did some washing. Report as soon as anything happens.
do some cleaning do some coo
4. 表示“随着…..”。常指一个行为是 另一个行为的结果，或一种状态随另一 种状态变化。
mistakes.
过不了多久，他就会意识到自己的错误。
时间状语从句
after 在……之后
After you use plastic bags, you mustn’t throw them about.
用过了塑料袋之后，不准到处乱扔。
After I got the relevant information
about BEC, I came to realize that what I learnt was really tiny.
当我了解有关BEC相关的信息后，我才发现自 己所学的简直是九牛一毛。
时间状语从句
since 自从……
We haven’t seen each other since we parted. 我们自从分手以后一直没见过面。 备注：主句常用现在完成时，从句 常用一般过去时。
时间状语从句 as when while
时间状语从句
as 正当…… 一 边……一边…… 随着……
1. 表示某事一发生，另一事立即发生
As the suvn. 出ro现ser,istehe fog disv.a消pp失eared.
n. 任期
As he sets out on his second term,
3. 表示两个动作同时发生。 She sang as soon as she did some washing. Report as soon as anything happens.
do some cleaning do some coo
4. 表示“随着…..”。常指一个行为是 另一个行为的结果，或一种状态随另一 种状态变化。
mistakes.
过不了多久，他就会意识到自己的错误。
时间状语从句
after 在……之后
After you use plastic bags, you mustn’t throw them about.
用过了塑料袋之后，不准到处乱扔。
After I got the relevant information
状语从句(完整版)PPT课件
child, I often played in the park.”（当我还是个孩子的时候，我经常
在公园里玩。）
02
从句时态先于主句
有时从句的时态会先于主句，表示从句中的动作发生在主句动作之前，
如“After he finished his work, he went home.”（他完成工作后就
结果状语从句的谓语动作可以与主句 的谓语动作同时发生，也可以在其后 发生。
结果状语从句的谓语动作可以是已完 成的，也可以是未完成的。
结果状语从句的省略与倒装
01
当结果状语从句的主语与主句主 语一致，且从句谓语包含be动词 时，可以省略从句的主语和be动 词。
02
在某些情况下，为了强调或保持 句子平衡，结果状语从句可以采 用倒装语序。
作用
使句子表达更加完整、准确，增强语 言的逻辑性和连贯性。
状语从句的构成
01
02
03
引导词
引导状语从句的词有 when、where、because 、if、although等。
主语和谓语
从句中通常包含主语和谓 语，构成完整的句子结构 。
时态和语态
根据主句的时态和语态， 从句的时态和语态也会相 应变化。
倒装
有时为了强调或保持句子的平衡，可以将时间状语 从句中的部分成分倒装，如“Only when he arrived did we start the meeting.”（只有当他 到达时，我们才开始会议。）
03
地点状语从句
Chapter
表示地点的连词
01
where：在...地方
02
03
04
wherever：无论在哪里
倒装
英语语法讲解课件-状语从句 ppt课件
ppt课件 10
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11
状语从句分类
1. 2. 3. 4. 5. 6. 7. 8. 表示时间 表示地点 表示原因 表示结果 表示目的 表示条件 表示让步 表示比较
ppt课件 12
表示时间
一、时间状语从句 • When, as ,while, • before, after, • till, Until, • as soon as, • The moment, the minute, the first time…. （名词性短语）
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E.G. 1. He was so angry that he left the room without a word. 他很生气,一句话不说就离开 了房间。 2. It is such a heavy box that nobody can move it. 3. The box is so heavy that nobody can move it. 4. The box is so heavy as nobody can move . 5. I didn’t go early, so that I didn’t get a seat.
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表示比较
八、比较状语从句
主要由 • than， • as...as, • the more…the more • 这类从句常常有一些成分没有表示出来:
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E.G.
• The more you eat, the fatter you are. • John is less clever than Tom. • He is not so/as clever as his brother.
ppt课件
ppt课件
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状语从句分类
1. 2. 3. 4. 5. 6. 7. 8. 表示时间 表示地点 表示原因 表示结果 表示目的 表示条件 表示让步 表示比较
ppt课件 12
表示时间
一、时间状语从句 • When, as ,while, • before, after, • till, Until, • as soon as, • The moment, the minute, the first time…. （名词性短语）
ppt课件 21
E.G. 1. He was so angry that he left the room without a word. 他很生气,一句话不说就离开 了房间。 2. It is such a heavy box that nobody can move it. 3. The box is so heavy that nobody can move it. 4. The box is so heavy as nobody can move . 5. I didn’t go early, so that I didn’t get a seat.
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表示比较
八、比较状语从句
主要由 • than， • as...as, • the more…the more • 这类从句常常有一些成分没有表示出来:
ppt课件 31
E.G.
• The more you eat, the fatter you are. • John is less clever than Tom. • He is not so/as clever as his brother.
ppt课件
状语从句讲解(共42张PPT)
He hurried home, looking behind as he went. 随着考试的临近，一些学生越来越紧张。
As the examination is drawing near, some students are getting more and more nervous. With the exam drawing near, some…
状语从句：也就是说由一个句子充当状语，它可以用来修饰谓语 （包括非谓语动词）、定语或状语，或是整个句子。
状语从句
时间 地点 条件 原因 让步 方式 结果 目的 比较
状语从句的概念及判定
判断下列从句为什么从句：名词性从句；定语从句；状语从句
1( .定Do语you) still remember the days which we spent in Beijing?
当…的时候
as
一边…一边；随着
as time went by = with time going by
while
在…的期间; 趁着… Strike the iron while it is hot.
一、时间状语从句 when
课上我正睡觉，突然听到有人喊我名字。 I was sleeping in class when I heard my name called. 我正要出门，突然有一位不速之客来访。
I was about to go out when an unexpected guest came to visit me.
她刚刚完成作业，她妈妈就让她练习钢琴。
She had just finished her homework when her mother asked her to practice playing the piano yesterday.
As the examination is drawing near, some students are getting more and more nervous. With the exam drawing near, some…
状语从句：也就是说由一个句子充当状语，它可以用来修饰谓语 （包括非谓语动词）、定语或状语，或是整个句子。
状语从句
时间 地点 条件 原因 让步 方式 结果 目的 比较
状语从句的概念及判定
判断下列从句为什么从句：名词性从句；定语从句；状语从句
1( .定Do语you) still remember the days which we spent in Beijing?
当…的时候
as
一边…一边；随着
as time went by = with time going by
while
在…的期间; 趁着… Strike the iron while it is hot.
一、时间状语从句 when
课上我正睡觉，突然听到有人喊我名字。 I was sleeping in class when I heard my name called. 我正要出门，突然有一位不速之客来访。
I was about to go out when an unexpected guest came to visit me.
她刚刚完成作业，她妈妈就让她练习钢琴。
She had just finished her homework when her mother asked her to practice playing the piano yesterday.
中考英语语法之状语从句 )(共23张PPT)
八、让步状语从句 定义：让步状语从句，是指状语从句中的一种，其本身也是状语从句。一般翻译为“尽管……”或 “即使……”，就是我们日常生活中用的“退一步说…”的感觉。 //引导词// though/although/as（虽然，尽管） even if/though（即使，尽管） whether/no matter whether...or(not)（不管...是否，不管是...还是） //注意// 1. though, although,as的区别 A. though, although的主句中可以用 yet, still, nevertheless,但不可使用but。 B. though引导的从句可以倒装，也可以不倒装； as引导的从句必须倒装； although引导的从句不能倒装。
as 1. 表示“当...时候”，强调同时发生，不指先后。 2. 说明两种正在发展或变化的情况，表示“随着”，表示时间的推移。 3. 表示“一边...一边...”。 4. 强调两个动作紧接着发生。 5. 表示“虽然，尽管”。 6. 其他含义“正如，正像”，“作为”，“由于，因为”
before 1. 一般意为“在...之前” “...才”，“...就” “还没有...”“免得”“不知不觉” “宁可，宁愿”，“否则，要不然”。
//注意// for也可以表示原因，属并列连词，但不是说明直接原因，而是对某种情况加以 推断，用于表示补充说明理由。
三、地点状语从句 定义：地点状语从句表示地点、 方位。 引导词：where, wherever 1. 地点状语从句由where, wherever引导。 //注意// where与wherever的区别：where表特定的地点，而wherever表示非特定的地点。 wherever=to/at any place where 2. 地点状语从句与定语从句的区别 where引导定语从句时，从句前应有一个表示地点的名词作先行词； 而状语从句前则无先行词。
状语从句-PPT课件
By the time he was fourteen, he had taught himself
advanced mathematics.
Each time he came, he would call on me.
You must show him in immediately he comes.
saw him.
--- Did you remember to give Mary the money you owed her? --- Yes, I gave it to her ______ I saw her.(’01全国春招）
A. while B. the moment C. suddenly D. once
2) She found her calculator _____ she lost it.(’00上 海）
3、原因状语从句：
通常由连词：because, as, since, now that引导。
注意： ① 在强调句中强调原因状语从句，只能用because引导， 不可用as或 since，如：
1) I do every single bit of housework____ my husband Bob just does the dishes now and then.(’04广西）
2) A. since B. while C. when D. as
2) He was about to tell me the secret____ some one patted him on the shoulder. (’02上海）
*when 可表示“如果”。如：
Don’t be afraid of asking for help_____ it is needed. (’03全国）
状语从句讲解PPT幻灯片
How can he get good grades when he won’t study? 总结： when的用法 4
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连接词when的用法小结
1. when引导的时间状语从句的谓语动词可以是可延续的，也可以 是表短暂性动作的动词，可用于主句和从句动作同时发生或从句动 作先于主句动作。
2. 可用作并列连词，其意义为“那时，这时”，相当于and at this/that time。常用于下列句式：
there in five minutes . How can I help them to understand when they won't listen to me?
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whenever 是when的强势语，它描述的不是一次性动作， 而是经常发生的习惯性动作。 You are always welcome whenever you come. 无论你何时来都欢迎。 Whenever we met with difficulties, they came to help us. 每当我们遇上困难的时候，他们就来帮我们。
语
从 结果状语从句
句 目的状语从句
方式状语从句
比较状语从句
状语从句有九种， 时地原因条状补， 目比结果方让步， 连词引导各不同； 主句通常前面走， 连词引导紧随后， 从句若在主前头， 主从之间有个逗。
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状语从句类型
从属连词
when，whenever，while，as，before，after，since，till, until， 时间状语从句 not…until, the moment，immediately，no sooner…than，
状语从句讲解
1
在复合句中由从句表示的状语称作状语从句，它 可以用来修饰谓语（包括非谓语动词）、定语或 状语，或是整个句子。
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连接词when的用法小结
1. when引导的时间状语从句的谓语动词可以是可延续的，也可以 是表短暂性动作的动词，可用于主句和从句动作同时发生或从句动 作先于主句动作。
2. 可用作并列连词，其意义为“那时，这时”，相当于and at this/that time。常用于下列句式：
there in five minutes . How can I help them to understand when they won't listen to me?
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whenever 是when的强势语，它描述的不是一次性动作， 而是经常发生的习惯性动作。 You are always welcome whenever you come. 无论你何时来都欢迎。 Whenever we met with difficulties, they came to help us. 每当我们遇上困难的时候，他们就来帮我们。
语
从 结果状语从句
句 目的状语从句
方式状语从句
比较状语从句
状语从句有九种， 时地原因条状补， 目比结果方让步， 连词引导各不同； 主句通常前面走， 连词引导紧随后， 从句若在主前头， 主从之间有个逗。
3
状语从句类型
从属连词
when，whenever，while，as，before，after，since，till, until， 时间状语从句 not…until, the moment，immediately，no sooner…than，
状语从句讲解
1
在复合句中由从句表示的状语称作状语从句，它 可以用来修饰谓语（包括非谓语动词）、定语或 状语，或是整个句子。
专四语法考点串讲状语从句ppt课件
• 考点四：no matter +疑问词相当于疑 问词+ever: 不管…都…
五、地点状语从句
• where/ wherever （wherever --- 无论哪 里）
• 考点聚焦：地点状语从句和where定语从句的 区别：
• Tips: 判断是定语从句还是地点状语从句，要 看从句前是否有先行词，有先行词的是定语从 句，否则是状语从句。
• （6）It was not + 时间段 + before从句“没过多 长时间就……”
二、条件状语从句
• 连接词：if , unless( 如果..不，除非), so/as long as（只要）, on condition that（条件是），as (so) far as ( 据.. 所知), provided that（要是，如果）， in case(万一，假使)，等
• 考点二：while 尽管
• eg. While I have sympathy for you, I can’t help you.
• 考点三：Whether ---不管，常与or not 连用
• Eg. Whether he is good or not, the company decided to send him abroad.
• Since everyone makes mistakes in life, you needn’t scold him for it.
• The day breaks, for the birds are singing.
• 考点二、 when 既然
• Eg. How can you expect to learn anything when you never listen?
五、地点状语从句
• where/ wherever （wherever --- 无论哪 里）
• 考点聚焦：地点状语从句和where定语从句的 区别：
• Tips: 判断是定语从句还是地点状语从句，要 看从句前是否有先行词，有先行词的是定语从 句，否则是状语从句。
• （6）It was not + 时间段 + before从句“没过多 长时间就……”
二、条件状语从句
• 连接词：if , unless( 如果..不，除非), so/as long as（只要）, on condition that（条件是），as (so) far as ( 据.. 所知), provided that（要是，如果）， in case(万一，假使)，等
• 考点二：while 尽管
• eg. While I have sympathy for you, I can’t help you.
• 考点三：Whether ---不管，常与or not 连用
• Eg. Whether he is good or not, the company decided to send him abroad.
• Since everyone makes mistakes in life, you needn’t scold him for it.
• The day breaks, for the birds are singing.
• 考点二、 when 既然
• Eg. How can you expect to learn anything when you never listen?
初中英语语法大全——状语从句(共24张PPT)
Kathy is so lovely that we all like to play with her.
He made so many mistakes that he failed the exam once again.
Such a little boy has so little difficulty in working out this problem that I admire him very much.
3、since的用法
(1) since意为“自从....”, 主句常用现在完成时或般现在时 ， 从句常用一般过去时。 eg: I have lived in England since I was three. 自3岁起 我就一直住在英国。 eg: It is two years since I became a college student. 我成为一名大学生已经两年了。
二、地点状语从句
在句子中充当地点状语的从句称为地点状语从句。引 导地点状语从句的从属连词主要有where( ...地 方), wherever(无论问处)等，表示地点方位。 eg: I found all the missing things where I left t hem. eg: Where there is a will, there is a way.
2. such...that...的用法
在such... that... 结构中，such是形容词，修饰名词或名词短语。引导 结果状语从句时，常用于以下结构:
a(n)+形容词+单数可数名词
so+ such+ 形容词+复数可数名词
+that+从句
状语从句ppt课件完整版
复杂。因此，在写作中要适度使用状语从句，保持句子的简洁明了。
拓展阅读资源推荐
语法书籍
《英语语法大全》、《英语语法 手册》等，这些书籍详细介绍了 英语语法的各个方面，包括状语
从句的用法和技巧。
在线资源
英语语法网、英语语法在线等网 站提供了丰富的英语语法知识和 练习题，可以帮助学习者更好地
掌握状语从句的用法。
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用法说明
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though和although在从句中不能与but连用，但可以与 副词still和yet连用。
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as引导的让步状语从句需要部分倒装，即将表语、状语或 动词原形提到as前面。
05
even if和even though引导的从句表示强调的让步，意 为“即使，尽管”。
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whether...or...和no matter+疑问词引导的从句表示“无 论...都...”，在句中位置灵活。
状语从句的结构和特点
状语从句通常由从属连词引导，从句中的谓语用非谓语形 式（不定式、分词、动名词等）。不同类型的状语从句有 不同的结构和特点，如时间状语从句常用when, while, as 等引导，条件状语从句常用if, unless等引导。
状语从句与并列句、复合句的关系
状语从句与并列句和复合句有密切关系。并列句由并列连 词连接两个或两个以上的简单句，而复合句则包含一个主 句和一个或多个从句。状语从句可以作为复合句中相反的假设条件，主句说明在这个假设条件下会出现的结果。常用if引导， 从句和主句的谓语动词都要用虚拟语气。
典型例句分析
Unless you change your mind, I won't be able to help you.（ 除非你改变主意，否则我帮不了 你。）
状语从句(23张PPT)初中英语专项复习课件
时间状语从句的引导词
when while as
when, while, as：当…时
①既可以加持续性动词也可以加终止性动词 ②从句动作与主句动作可同时发生也可先后发生
When he arrived all the guests had left. Mary was having dinner when I saw her.
让步状语从句
though和although的用法 （1） 两词用法基本相同，although更加正式一些 （2） even though结构中的though不可以换为although （3） 两词不可与but连用，但是可以和yet, still连用
Though/although she works very hard, she makes slow progress. Though/although she is young, she has travelled to many countries.
条件状语从句
If the weather is terrible next week, we will put off the meeting. As long as you promise to come, I will wait for you. You will be late unless you hurry up. In case it rains, do not expect me.
3. such + 形容词+不可数名词+ that…
This was such fine music that it was worth listening to it again.
比较状语从句
1.在复合句中起比较状语作用的从句称为比较状语从句
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我五年后才能回来。
It will be five years before I came back. 用不了多久他们就会互相了解了。
Hardly… when/No sooner… than 一…就 Every time / each time 每次， 每当
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1. 我什么都不会说，直到你让我说。
I won’t say anything until you tell me to. 2. 直到他回来，我们才开始工作。 We didn’t start the work until he came back.
6.每当我听音乐，我就想起这事。
Every time I listen to music, I’ll think of it.
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时间状语从句（3）
before It will be +一段时间+before从句(does) 要过……才能做 It will not be +一段时间+before从句 要不了…… 就能做 It was +一段时间+before从句(did) 过了……做了…… It was not+一段时间+before从句(did) 没过……做了……
4
意思为既然或考虑到 (原因状语从句) It was foolish of you to take a taxi when you could easily walk there. How can they learn anything when they spend all their spare time watching television? Why do you want a new job when you have got such a good one? There is no point （in） owning a car when we have so good a public transport system. Why use metal when you can use plastic? How can he get the promotion when his boss dislikes him?
As she grew older, she became more beautiful. As time goes by, …. Just as
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时间状语从句（2）
Not …until… 直到…才…
Since
自从
As soon as (immediately, directly) 一…就
The moment/ the minute 一…就
not… until句型中强调和倒装： It was not until he came back that we started the work. Not until he came back did we start the work.
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3. 他们一看到这张照片，就笑翻了。 They laughed as soon as they saw the picture. They laughed the moment they saw the picture. 4. 我刚一到家就开始下雨了。 Hardly had I got home when it began to rain. No sooner had I got home than it began to rain. 5. 他刚一上去车就发动了。 Hardly had he got on it when the bus started. No sooner had he got on it than the bus started.
状语从句
1
1.时间状语从句（1）
When
当… While
As
2
When
When---当……时候, 通常指某一特定的时间点， 主句与从句的动作同时发生。
When --- 正在……的时候，突然…。通常主句 是be doing 或 be about to 或 had just done When也可以表示先后关系
I will tell her about it when I see her. I was about to fall asleep when my sister came in. I will go home when he comes back. 3
I recognized the thief when/ as I passed him. When he finished his lecture, people stood up and applauded. I was walking on the street when I came across an old friend. We were about to set off when it began to rain. He had just finished the work when the doorbell rang. We were on the point of driving away when the policeman signed us to stop.
5
while
While ---在……期间，往往指一段时间。
While we were in America, we saw him twice.
While we were talking, he ቤተ መጻሕፍቲ ባይዱame in.
While 表示两相对比。
We are cleaning the classroom while they are playing the football.
While 表示让步“尽管”。
While I admit that there are problems, I don't agree that they cannot be solved.
6
As
As --- 一边……一边, 随着,
She was doing her homework as she was listening to the music.
我五年后才能回来。
It will be five years before I came back. 用不了多久他们就会互相了解了。
Hardly… when/No sooner… than 一…就 Every time / each time 每次， 每当
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1. 我什么都不会说，直到你让我说。
I won’t say anything until you tell me to. 2. 直到他回来，我们才开始工作。 We didn’t start the work until he came back.
6.每当我听音乐，我就想起这事。
Every time I listen to music, I’ll think of it.
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时间状语从句（3）
before It will be +一段时间+before从句(does) 要过……才能做 It will not be +一段时间+before从句 要不了…… 就能做 It was +一段时间+before从句(did) 过了……做了…… It was not+一段时间+before从句(did) 没过……做了……
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意思为既然或考虑到 (原因状语从句) It was foolish of you to take a taxi when you could easily walk there. How can they learn anything when they spend all their spare time watching television? Why do you want a new job when you have got such a good one? There is no point （in） owning a car when we have so good a public transport system. Why use metal when you can use plastic? How can he get the promotion when his boss dislikes him?
As she grew older, she became more beautiful. As time goes by, …. Just as
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时间状语从句（2）
Not …until… 直到…才…
Since
自从
As soon as (immediately, directly) 一…就
The moment/ the minute 一…就
not… until句型中强调和倒装： It was not until he came back that we started the work. Not until he came back did we start the work.
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3. 他们一看到这张照片，就笑翻了。 They laughed as soon as they saw the picture. They laughed the moment they saw the picture. 4. 我刚一到家就开始下雨了。 Hardly had I got home when it began to rain. No sooner had I got home than it began to rain. 5. 他刚一上去车就发动了。 Hardly had he got on it when the bus started. No sooner had he got on it than the bus started.
状语从句
1
1.时间状语从句（1）
When
当… While
As
2
When
When---当……时候, 通常指某一特定的时间点， 主句与从句的动作同时发生。
When --- 正在……的时候，突然…。通常主句 是be doing 或 be about to 或 had just done When也可以表示先后关系
I will tell her about it when I see her. I was about to fall asleep when my sister came in. I will go home when he comes back. 3
I recognized the thief when/ as I passed him. When he finished his lecture, people stood up and applauded. I was walking on the street when I came across an old friend. We were about to set off when it began to rain. He had just finished the work when the doorbell rang. We were on the point of driving away when the policeman signed us to stop.
5
while
While ---在……期间，往往指一段时间。
While we were in America, we saw him twice.
While we were talking, he ቤተ መጻሕፍቲ ባይዱame in.
While 表示两相对比。
We are cleaning the classroom while they are playing the football.
While 表示让步“尽管”。
While I admit that there are problems, I don't agree that they cannot be solved.
6
As
As --- 一边……一边, 随着,
She was doing her homework as she was listening to the music.