高考英语状语从句复习课件PPT课件
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高考英语语法一轮复习状语从句优质课件(共58张PPT)
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unless C.
______ it is possible to test this medicine on
精编优质课PPT高考英语语法一轮复习 状语从句课件(共58张PPT)(获奖课件推荐下载)
My mother was cooking while I was doing 如： When you have finished your work, you may have a rest.
when…
“ 在那时”,表示某件是正在发生或刚刚发生， 另一动作同时发生
The telephone was ringing when I got home. I was about to go to bed when he came back.
精编优质课PPT高考英语语法一轮复习 状语从句课件(共58张PPT)(获奖课件推 荐下载)
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We were just __ calling you up __ you came in. A. about ; when B. on the point of ; while C. on the point of ; when D. on the point of ; as
3. He hurried home, looking behind as he went. 他.匆匆忙忙回家，边走边往后看。
4. As he was going out, it began to rain. 当他出去时开始下雨了。
5. As a boy (When he was a boy), he was hopeless at English.
unless C.
______ it is possible to test this medicine on
精编优质课PPT高考英语语法一轮复习 状语从句课件(共58张PPT)(获奖课件推荐下载)
My mother was cooking while I was doing 如： When you have finished your work, you may have a rest.
when…
“ 在那时”,表示某件是正在发生或刚刚发生， 另一动作同时发生
The telephone was ringing when I got home. I was about to go to bed when he came back.
精编优质课PPT高考英语语法一轮复习 状语从句课件(共58张PPT)(获奖课件推 荐下载)
精编优质课PPT高考英语语法一轮复习 状语从句课件(共58张PPT)(获奖课件推 荐下载)
We were just __ calling you up __ you came in. A. about ; when B. on the point of ; while C. on the point of ; when D. on the point of ; as
3. He hurried home, looking behind as he went. 他.匆匆忙忙回家，边走边往后看。
4. As he was going out, it began to rain. 当他出去时开始下雨了。
5. As a boy (When he was a boy), he was hopeless at English.
2023届高考英语复习专题：复习状语从句课件
time I arrived. • 截止到我到来之前，其他学生已经打扫完卫生了。
• 由as soon as, immediately, directly, instantly, the moment, the instant, the minute等引导的时 间状语从句，这些连词都表示“一……就……”。
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. • (当)我到了电影院时，电影已经开演了。(从句的动作
发生在主句之后，只能用when,并要注意时态)
• He was about to leave, when the telephone rang. • 他正要离开，忽然电话响了。( 此时不能放在句首。
• Xiao Ming didn’t leave home till / until his father came back.
• 小明直到他爸爸回来才离开家。 • 9.by the time 到...为止 (所在句子的主句应用完成时) • /当...的时候
• By the time he gets there , his father has already gone. • 他到家的时候，他爸爸已经走了。
before he came here. • 布朗先生来这里之前已经在一家银行里工作一年
了。 • 6.as soon as 一...就... • We began to work as soon as we got there. • 我们一到那就开始工作。 • I will write to you as soon as I get home. • 我一到家就给你写信。
• 由as soon as, immediately, directly, instantly, the moment, the instant, the minute等引导的时 间状语从句，这些连词都表示“一……就……”。
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. • (当)我到了电影院时，电影已经开演了。(从句的动作
发生在主句之后，只能用when,并要注意时态)
• He was about to leave, when the telephone rang. • 他正要离开，忽然电话响了。( 此时不能放在句首。
• Xiao Ming didn’t leave home till / until his father came back.
• 小明直到他爸爸回来才离开家。 • 9.by the time 到...为止 (所在句子的主句应用完成时) • /当...的时候
• By the time he gets there , his father has already gone. • 他到家的时候，他爸爸已经走了。
before he came here. • 布朗先生来这里之前已经在一家银行里工作一年
了。 • 6.as soon as 一...就... • We began to work as soon as we got there. • 我们一到那就开始工作。 • I will write to you as soon as I get home. • 我一到家就给你写信。
状语从句+课件-2024届高考英语一轮复习
5.自然而然接when
状语从句省略
前提：
1. 从句的主语 与 主句的主语一致； 2. 从句中需有be动词。
省略时需把从句主语和be动词一起省 略。
He fell asleep when he was doing his homework. When I was surfing the net, the power was off. His father died when he was only three.
二. 连接词
语气最弱，看到一个现象去反推可能的情况 It must be morning，for the birds are singing.
原因状语从句
常见：because, as, since, for
用法几乎一致，表示直接的原因，as语气稍 弱。 As he is too yong, he can’t join the army.
二. 连接词：时间状语从句 一... 就....
no sooner... than... I had no sooner seen you than I smiled. hardly... when...
二. 连接词：时间状语从句 一... 就....
no sooner... than... I had no sooner seen you than I smiled.
二. 连接词
让步状语从句
1. although，though， as 虽然，尽管 2. even if ， even though 即便，即使 3. 特殊疑问词+ever/ no matter + 特殊疑问词 不论
二. 连接词：让步状语从句 3. 特殊疑问词+ever/ no matter + 特殊疑问词 不论
状语从句省略
前提：
1. 从句的主语 与 主句的主语一致； 2. 从句中需有be动词。
省略时需把从句主语和be动词一起省 略。
He fell asleep when he was doing his homework. When I was surfing the net, the power was off. His father died when he was only three.
二. 连接词
语气最弱，看到一个现象去反推可能的情况 It must be morning，for the birds are singing.
原因状语从句
常见：because, as, since, for
用法几乎一致，表示直接的原因，as语气稍 弱。 As he is too yong, he can’t join the army.
二. 连接词：时间状语从句 一... 就....
no sooner... than... I had no sooner seen you than I smiled. hardly... when...
二. 连接词：时间状语从句 一... 就....
no sooner... than... I had no sooner seen you than I smiled.
二. 连接词
让步状语从句
1. although，though， as 虽然，尽管 2. even if ， even though 即便，即使 3. 特殊疑问词+ever/ no matter + 特殊疑问词 不论
二. 连接词：让步状语从句 3. 特殊疑问词+ever/ no matter + 特殊疑问词 不论
高考英语一轮复习状语从句课件
03 条件状语从句
条件状语
(1)条件状语从句通常由if, unless引导。例如：
1 What shall we do if it snows tomorrow?
Don’t leave the building unless I tell you to.
条件状语
2
(2)在条件状语从句里，时态需主将从现。例如：
定语从句：主句…表地点的名词+where…
place
状语从句：主句…+ where…
place
For example:
一般而言，有工厂的地方空气都会被严重污染。 Generally, air will be heavily polluted in the places where there are factories. Generally, air will be heavily polluted where there are factories.
love and respect him. 结果
条件 6. As long as you don’t lose heart, you’ll succeed. 7. Child as she is, she knows a lot of things. 让步 方式 8. The old lady treats the boy as if he were his own son. 9.He is taller than I am. 比较
C
结果状语从句
so…that, such…that,
D
条件状语从句
if, unless, as(so)long as
总结：状语从句分类及常用连词：
A
地点状语从句 where，wherever
2024届高考英语一轮复习语法：状语从句课件
The dog will eat a cake as soon as the cat leaves.
主句
从句
2.地点状语从句
地点状语从句
引导词：where + 强调形式
Wherever，everywhere，anywhere 不管哪里，任何地方，所有地方
2.地点状语从句 狗狗在发现蛋糕的地方吃了它。 The dog ate the cake where he found it.
1.时间状语从句 在某一时间之中 引导词：when while as
when： 时间点，“突然”
我到家的时候，狗狗在吃蛋糕。
The dog was eating a cake when I reached home.
e：时间段
我在做饭的过程中，狗狗在吃蛋糕。
The dog was eating a cake while I was cooking.
She is as beautiful as Snow White. 她和白雪公主一样漂亮.
3.比较状语从句
比较状语从句：更…
He is smarter than I. He is smarter than l am.
This cake is bigger than that one. This cake is bigger than that one is.
Because > since > as
因果/语气
原 因
because > since > as
状 语 because 引导的实实在在的因果关系
从 句
since 引导的是众所周知的事实
as 引导的是显而易见的事实
高考英语语法一轮复习状语从句课件45张
as soon as引导的时间状语从句
◆ as soon as :“一…就…”， 例句：他一回来我就告诉他这件事。 I will tell him about it as soon as he comes back.
◆相当于as soon as 用法的词或短语还有：immediately, directly, instantly, the moment, the minute, the instant等.
状语从句分类
• 状语从句可以分为：
• 1-时间状语从句、 2-地点状语从句、 3-原因状语从句、 4-结果状语从句、 5-条件状语从句, 6-目的状语从句、 7-让步状语从句, 8-方式状语从句.
精编优质课PPT高考英语语法一轮复习 状语从 句课件 (共45 张PPT)( 获奖课 件推荐 下载)
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if
D.
当主句谓语动词是非延续性动词时, 主句常用否定形式。 We haven’t seen each other since we broke up.
精◆编优质课PPT高考英语语法一轮复习状语从句课件(共45张PPT)(获奖课件推荐下载)
Though he wanted the job very much
句子 的一种句子成分。 它可以表示时间、地点、原因、目的、结果、条件、 让步、比较、方式等。
当充当状语的部分是一个句子时—— 状语从句。
精编优质课PPT高考英语语法一轮复习 状语从 句课件 (共45 张PPT)( 获奖课 件推荐 下载)
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◆ as soon as :“一…就…”， 例句：他一回来我就告诉他这件事。 I will tell him about it as soon as he comes back.
◆相当于as soon as 用法的词或短语还有：immediately, directly, instantly, the moment, the minute, the instant等.
状语从句分类
• 状语从句可以分为：
• 1-时间状语从句、 2-地点状语从句、 3-原因状语从句、 4-结果状语从句、 5-条件状语从句, 6-目的状语从句、 7-让步状语从句, 8-方式状语从句.
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if
D.
当主句谓语动词是非延续性动词时, 主句常用否定形式。 We haven’t seen each other since we broke up.
精◆编优质课PPT高考英语语法一轮复习状语从句课件(共45张PPT)(获奖课件推荐下载)
Though he wanted the job very much
句子 的一种句子成分。 它可以表示时间、地点、原因、目的、结果、条件、 让步、比较、方式等。
当充当状语的部分是一个句子时—— 状语从句。
精编优质课PPT高考英语语法一轮复习 状语从 句课件 (共45 张PPT)( 获奖课 件推荐 下载)
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高考英语一轮复习——状语从句精讲课件(共70张PPT)
married. =It has been three months since he
got married.
every time, next time, the day
Every time I listen to your advice, I get into trouble.
Next time you come, please bring your composition.
until可放句首，可用强调句型。Till不可 句型转换：
直到我们向他们指出了他们的错误，他们 才意识到。 1. They didn‘t realize their fault until/till we
pointed it out to them . 2. Not until we pointed out their fault to them did
don’t practice more.
in case（万一),once(一旦）
In case I forget, please remind me about it.。
In case you need something, please don't hesitate to let me know.
that
If (如果）; unless（除非）；
We shall have a picnic if it is a fine day tomorrow.
unless=if not You will never play the piano well unless
you practice more. =You will never play the piano well if you
got married.
every time, next time, the day
Every time I listen to your advice, I get into trouble.
Next time you come, please bring your composition.
until可放句首，可用强调句型。Till不可 句型转换：
直到我们向他们指出了他们的错误，他们 才意识到。 1. They didn‘t realize their fault until/till we
pointed it out to them . 2. Not until we pointed out their fault to them did
don’t practice more.
in case（万一),once(一旦）
In case I forget, please remind me about it.。
In case you need something, please don't hesitate to let me know.
that
If (如果）; unless（除非）；
We shall have a picnic if it is a fine day tomorrow.
unless=if not You will never play the piano well unless
you practice more. =You will never play the piano well if you
高考英语复习状语从句PPT课件
用 的
地点状语从句
where, wherever
状
语 原因状语从句 because, since, as, now that, seeing
从
that, considering that
句
及 条件状语从句 if, unless, now (that), as (so) long as,
其 in case, on condition that, suppose/supposing,
九
till, until, not…until, the first/second…/last time, the momen
种
the minute, the instant, immediately, directly, instantly,
常
hardly…when, scarcely…when, no sooner…than
storm started.
A. when B. while C. until D. before
2. (02上海) He was about to tell me the secret ___D___ someone
patted him on the shoulder.
A. as
B. until
C. while D. when
( 方式 )
1、各种从属连词的含义及用法
比较；
考
2、no matter wh- 与 wh-ever 引 导的从句的区别；
点 3、状语从句的时态问题；
难 4、状语从句倒装及紧缩问题； 点 5、状语从句与其它从句的区别。
1. 时间状语从句
问题1:
1. (04北京春) We were swimming in the lake ___A___ suddenly the
高考英语总复习语法课件：专题十一状语从句 (共32张PPT)
4．That's why I help brighten people's days. If you________，who's to say that another person will?
5．There is only one more day to go ________your favorite music group play live.
she makes very slow progress. 尽管她非常努力，但还是进步很慢。
even if/even though
表示语气更强的让步，意为“尽管，即使， 退一步说”。
We will make a trip even if/even though the
weather is bad. 即使天气不好， 我们也要去旅行。
2.原因状语从句
引导词
用法
表示造成某种情况的直接原因。语气最强， 常用来回答why的提问。
because He didn't have breakfast because he got up
too late. 因为起床太晚了，他没有吃早饭。
since
表示显然的或已为人知的理由，语气比 because弱，通常置于句首。 Since you won't help me，I will ask
意为“在……之前；……之后才；没来得 及……就……”，常表示主句动作先于从句动 作发生。从句一般不为否定句。
I must finish this letter before I go home. 我必须在回家之前写完这封信。
She died before she wrote a will. befor 她还没来得及写遗嘱就去世了。
高三高考英语语法复习：状语从句(PPT课件)
2
状语从句有哪些类别？
翻译下列句子，指出画线部分状语从句的类别 1.Every_time_I_see_action_movies_acted_by_Jackie_Chan,_I would get excited. 每当我看成龙演的动作片时，我会很兴奋。 Every time I see action movies acted by Jackie Chan 作时间状语。
3. 因为生病，她只好留在家里。句中无状语从句。 Being ill, she had to remain at home.
1
4. There is life where there is water. 有水的地方就有生命。句中where there is water为地点状语从 句。
1
状语从句有两个特征：必须在句中作状语；必须是句子作状语。 因此，在句中作状语，修饰句子或动词等的从句叫状语从句。
2
2. You should have put away the book where_you_took_it. 你应该把书放回原处。 where you took it作地点状语。 3. The higher income tax is harmful in_that_it_may_discourage_people_from_trying_to_earn_more. 所得税高是有害的，它让人不想去赚更多的钱。 in that it may discourage people from trying to earn more作原因状语。
高考英语语法复习之
状语从句
1
什么是状语从句？
翻译下列句子，指出句子中的状语从句 1. Great changes have taken place in China in the last few decades. 最近几十年以来，中国发生Whoever breaks the law shall be punished. 任何违背了法律的人必定受到惩罚。句中无状语从句。
2023届高考英语一轮复习状语从句课件
2． 地点状语从句
翻译下列句子
1. 有志者事竟成。
Where there is a will, there is a way.
2.你最好不要把药放在孩子够得着的地方。 You had better not leave the medicine where the children could reach it.
2017年真题
He will not rest __u_n_t_il_h_e_k_n_o_w__s_t_h_e_t_ru_t_h_____________________(直到他
知道真相).
真题再现： 2013年真题 Hurry up, or _th_e_ti_ck_e_ts_w_il_l h_a_v_e _be_e_n_s_ol_d_ou_t_w_h_en_w_e__ge_t_th_e_re_(b_y_th_e_t_im_e_w_e_r_ea_ch there) (我们到那儿时票都卖完了). 2021年真题 Please don’t talk so loudly _w_h_en_/w_h_il_e_o_th_er_s/_o_th_er_p_e_op_le__ar_e_w_o_rk_in_g/_a_t w_o_rk____(他人在工作的时候)
虚拟语气在if条件句中的用法
• 1）If it ___w__er_e_____(be) fine now, I _w_o_u_ld_g_o______ (go) shopping.
• 2）If I _h_a_d_ (have) enough money,I ___w_o_ul_d_b_u_y ______ (buy) a new car.
（8）He had hardly sat down when the telephone rang.
高考英语状语从句讲解及练习课件
He is not so/as clever as his brother.
3
2
1
4
9.比较
_____ they had worked for along time, everyone looked tired. A． While B． After C． Unless D． For He has been a teacher ______ he came to the country. A． since B． until C． as D． when
He couldn't come ______ he wanted to. A． as B． because C． although D．for _____ you gave a party and no one come, what would you do? A． Although B． If C． Unless D．When
8． The man put on a overcoat ______ keep himself warm. A． that B． so that to C． in order that D．in order to 9． He has changed so much ______ I can hardly recognize him. A． as B． so that C． that D．but
17 He always thinks I'm wrong, ______ I may say. A． no matter whatever B． whatever C． what D． that 18． ______ , Mother will wait for him to have dinner together. A． However late is he B． However he is late C． However is he late D． However late he is
高考英语二轮复习让步状语从句(共36张PPT)
• Try as you will, you won’t be able to persuade him.
• 3. 行为动词原形的倒装 A. 动词前面带有情态动词may, might, will,
would, can, could等时，只将行为动词提到句 首，而这些情态动词保留在原处。
B. 若动词前面没有情态动词时，应在动词原来的 位置加上助动词do的适当形式。
Old as / though he is, he keeps on learning English.
• 7、 in spite of = despite + 名词 in spite of the fact ( that ) 尽管，虽然
Despite the traffic jam, he arrived here on time.
If he is poor, he is at least honest. (让步) (= even if)
4、whether...or... “不论是否…”， “不管是…还是…”
• 由这一个复合连词引导的让步状语从句旨在说 明正反两个方面的可能性都不会影响主句的意 向或结果。
• You’ ll have to attend the ceremony whether you’ re free or busy. 不管你忙不忙，都要参加这个典礼。
• 归纳：
1、no matter + 疑问词 只引导让步状从 2、疑问词+ever 既能引导让步状从
又能引导名词性从句 No matter when you leave, I’ll see you off. = Whenever you leave, ------.
Whenever you’ll leave is none of my business. (主语从句）
• 3. 行为动词原形的倒装 A. 动词前面带有情态动词may, might, will,
would, can, could等时，只将行为动词提到句 首，而这些情态动词保留在原处。
B. 若动词前面没有情态动词时，应在动词原来的 位置加上助动词do的适当形式。
Old as / though he is, he keeps on learning English.
• 7、 in spite of = despite + 名词 in spite of the fact ( that ) 尽管，虽然
Despite the traffic jam, he arrived here on time.
If he is poor, he is at least honest. (让步) (= even if)
4、whether...or... “不论是否…”， “不管是…还是…”
• 由这一个复合连词引导的让步状语从句旨在说 明正反两个方面的可能性都不会影响主句的意 向或结果。
• You’ ll have to attend the ceremony whether you’ re free or busy. 不管你忙不忙，都要参加这个典礼。
• 归纳：
1、no matter + 疑问词 只引导让步状从 2、疑问词+ever 既能引导让步状从
又能引导名词性从句 No matter when you leave, I’ll see you off. = Whenever you leave, ------.
Whenever you’ll leave is none of my business. (主语从句）
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5
when, while, as 1.W__h_i_le_/_A__s_/_W__h_e_n_ we were talking, Mr.
Smiths came in. 2._W_h_e_n_ they came home, I was cooking dinner. 3. I was about to go to bed _______ I heard
11
Before的用法 It will be half a year before I come back.
it will be +一段时间 before......多久之后才...
It won’t be half a year before we meet again.
2. every time, next/last/each time, the first time, the moment, the minute, the instant
3. immediately, instantly, directly 4. hardly…when, no sooner…than, scarcely…when
Adverbial Clauses
1
判断下列ቤተ መጻሕፍቲ ባይዱ语从句的种类
1.While I was wondering at this, our schoolmaster
took his place. (
)
时间
2. Where there is a will, there is a way. (
)
3. N地ow点that/Since everybody is here, let’s begin
own son. (
)
• 9.He woke up as suddenly方a式s he had fallen
asleep. (
)
比较 3
一个句__子__在复合句中用作状语时,在语法上叫 状语从句。从句由___从__属__连词、__名__词__词__组或 ___副__词__引导。 状语从句可分为：1) __时__间__ 2) ___地__点____
someone knocked at the door. when 4. ________ we were watching TV, he was
stuWdhyinleg. 5. He is fat _______ his brother is thin. 6. ______ she swanhgil,etears ran down her face.
• 6. As long as yo结u d果on’t lose heart, you’ll
succeed. ( )
• 7. Try as he might, h条e c件ould not find a job.
()
• 8. The o让ld步lady treats the boy as if he were his
7
（2）可用作并列连词，其意义为“那时， 这时”，相当于and at this/that time。 常用于句式：
Somebody was doing something when… Sb. was about to do sth. when… (刚要……这时突然……)
8
2、连接词while的用法 （1） while意思是“当……的时候”或“在 某一段时间内”，引导的从句动作必须是 持续性的，侧重主句动作和从句动作相对 比。 People don’t talk so loudly while others are working. （2）从句和主句的谓语动词都为延续性动词 时, 只能用while; while还可作并列连词,表 示”而”.
3) ___原__因_ 4) _____目__的__ 5) ___结__果__ 6) ____条__件___ 7) ___方__式__ 8) _____比__较__ 9) ___让__步__等
4
一. 时间状语从句的引导词 1. when, while , as, before, after, until, till, since, ever since, once, as soon as ，
(3) As 还能表示“一边……一边”，如： He looked behind from time to time as he went.
10
4．如果主句表示的是短暂动作，而从 句用延续性动作的进行时态表示在 一段时间内正在进行的动作时， when, while与as 可互换使用。如： When/While/As I was walking down the street, I came across an old friend of mine.
our meeting. （ ）
4. I’ll speak slowly so that you can原u因nderstand me. ( )
目的
2
5. So clever was he a student that he was able to
work out all the difficult problems. ( )
I was reading while he was watching TV.
9
3．as 的用法：
(1) as 着重强调主句和从句的动作同时或几乎 同时发生，如： The students rose as the teacher entered the classroom. (2)as还可以表示“随着……”，如： As time goes by, it is getting colder and colder.
As
6
连接词when、while、as的用法小结 1、when 的用法： （1）when引导的时间状语从句的谓语动词 可以是延续的，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。如： When the film ended, the people went back. When I lived there, I used to go to the seashore on Sundays.
when, while, as 1.W__h_i_le_/_A__s_/_W__h_e_n_ we were talking, Mr.
Smiths came in. 2._W_h_e_n_ they came home, I was cooking dinner. 3. I was about to go to bed _______ I heard
11
Before的用法 It will be half a year before I come back.
it will be +一段时间 before......多久之后才...
It won’t be half a year before we meet again.
2. every time, next/last/each time, the first time, the moment, the minute, the instant
3. immediately, instantly, directly 4. hardly…when, no sooner…than, scarcely…when
Adverbial Clauses
1
判断下列ቤተ መጻሕፍቲ ባይዱ语从句的种类
1.While I was wondering at this, our schoolmaster
took his place. (
)
时间
2. Where there is a will, there is a way. (
)
3. N地ow点that/Since everybody is here, let’s begin
own son. (
)
• 9.He woke up as suddenly方a式s he had fallen
asleep. (
)
比较 3
一个句__子__在复合句中用作状语时,在语法上叫 状语从句。从句由___从__属__连词、__名__词__词__组或 ___副__词__引导。 状语从句可分为：1) __时__间__ 2) ___地__点____
someone knocked at the door. when 4. ________ we were watching TV, he was
stuWdhyinleg. 5. He is fat _______ his brother is thin. 6. ______ she swanhgil,etears ran down her face.
• 6. As long as yo结u d果on’t lose heart, you’ll
succeed. ( )
• 7. Try as he might, h条e c件ould not find a job.
()
• 8. The o让ld步lady treats the boy as if he were his
7
（2）可用作并列连词，其意义为“那时， 这时”，相当于and at this/that time。 常用于句式：
Somebody was doing something when… Sb. was about to do sth. when… (刚要……这时突然……)
8
2、连接词while的用法 （1） while意思是“当……的时候”或“在 某一段时间内”，引导的从句动作必须是 持续性的，侧重主句动作和从句动作相对 比。 People don’t talk so loudly while others are working. （2）从句和主句的谓语动词都为延续性动词 时, 只能用while; while还可作并列连词,表 示”而”.
3) ___原__因_ 4) _____目__的__ 5) ___结__果__ 6) ____条__件___ 7) ___方__式__ 8) _____比__较__ 9) ___让__步__等
4
一. 时间状语从句的引导词 1. when, while , as, before, after, until, till, since, ever since, once, as soon as ，
(3) As 还能表示“一边……一边”，如： He looked behind from time to time as he went.
10
4．如果主句表示的是短暂动作，而从 句用延续性动作的进行时态表示在 一段时间内正在进行的动作时， when, while与as 可互换使用。如： When/While/As I was walking down the street, I came across an old friend of mine.
our meeting. （ ）
4. I’ll speak slowly so that you can原u因nderstand me. ( )
目的
2
5. So clever was he a student that he was able to
work out all the difficult problems. ( )
I was reading while he was watching TV.
9
3．as 的用法：
(1) as 着重强调主句和从句的动作同时或几乎 同时发生，如： The students rose as the teacher entered the classroom. (2)as还可以表示“随着……”，如： As time goes by, it is getting colder and colder.
As
6
连接词when、while、as的用法小结 1、when 的用法： （1）when引导的时间状语从句的谓语动词 可以是延续的，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。如： When the film ended, the people went back. When I lived there, I used to go to the seashore on Sundays.