时间和原因状语从句 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.

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。

初中状语从句讲解ppt课件

7.It is two years __si_n_c_e_he came here. Every time/each time
8. __U_n_t_il__she told me, I had no idea of what they had said .
2. 地点状语从句
地点状语从句由 where, wherever 等引导。例如：
2.__S_in_c_e__ you do not understand, I will explain again. 3. He must be ill, __fo_r__he is absent today.
6. I eat potatoes _b_e_c_a_u__se__I like them.
5. 目的状语从句
?目的状语从句常由so that, in order that等词引导，目的状语从句常用助动词may （might）, shall（should）, will（would）, can (could)。目的状语从句常放于主句之后，例：
? Speak clearly so that they may understand you. 你要讲得清楚，他们才听得懂。
While I really don' t like art, I find his work impressive. (while=__a_lt_h_o_u_g_h___)
While there is life there is hope. (while=___a_s_l_o_n_g_a_s_____)
?You can take a walk wherever you like to.
? ---Mom, what did your doctor say?

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。

时间与原因状语从句完美版PPT

时间与原因状语从句
I.le, as before, after since, till/until, by the time as soon as = the moment hardly…when = no sooner…than the first time, every/each time whenever等
② 然而 (并列句, 侧重比照) Adverbial clause of time:
----As it is raining, we’d better stay inside.
----You are sitting while I am standing. ----It is/has been three years since I joined the Party.
----It is/has been 11 years since I came to Shanghai. ----It is/has been three years since I joined the Party. 注意:主句时态— 一般现在时/现在完成时
从句时态— 一般过去时
练一练
直到他生病他才意识到健康的重要性。(Not until…) 半倒
h__a_d_t_a_u_g_h_t_ (teach) himself advanced mathematics.
as soon as 一…就…
the moment the minute the instant immediately directly…
----I recognized her the moment I saw her. ----He cried the moment he heard the bad news.

初中英语语法状语从句课件(共45张PPT)

• 3）than 意为“比……更……”； • The boy is taller_than_his_father. (比他的父
亲还高)
4）比较状语从句通常与倍数表达法结合起来运用。
①A +is…times +as+ adj.原级+as +B ②A +is…times+ adj.比较级+than +B ③A +is…times+ the size/length/height/width/depth +of + B ④The size/length/height/width/depth… +of+ A+ is…times of +B
where引导 A句+where+B句在B句…地方, A句… 在环境污染严重的地方，许多珍稀物种处于灭绝的边缘。
Many rare animals are on the verge of extinction where environmental pollution is serious.
三、条件状语从句 1. If引导的条件句 2. Unless 3. Once 4. As long as
• 这个数据在下降到1990年的20%之前，它先上升到1980年的80%
• Before the figure jumped to 20% in 1990, it increased to 80% in 1980.
• 5. A句+since+B句/时间短语【自从B句…,A句就…】
自从手机发明以来，人们的生活发生了巨大变化。
五、目的状语从句
A句+in order that+B句 A句+so that+B句【A句…是为了B句…】

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）

初中英语时间状语从句PPT课件

• (她入党二十年了。)(主句中的动词表示的不是延续动作，而是状态，用现在时。）
#
第十八页，共21页。
• I have worked in this school since I graduated from Beijing University.
• It is ten years since she began to learn English.
finished her homework.
• (她一直到写完作业才睡觉。)
#
第二十一页，共21页。
You can’t do your homework while you’re watching TV.
#
第九页，共21页。
as
• 由as引导的时间状语从句，[表示时间]当..., 的时候 , 一边...一边, 随着。
• 如： • 1. She sang as she worked. • 她一边工作一边唱歌。 • 2. I saw him as he was getting off the bus. • 正当他下公共汽车时, 我看见了他。
#
第十四页，共21页。
（三）、另外,when和while的区别还在于： while引导的时间状语从句多用进行时态, 而when引导的时间状语从句多用一般时态.
例如：1、While they were talking ,the bell rang.正在他们谈话的时候,上课铃响了.
2、I was doing my homework when my
#
第十二页，共21页。
when、while
（一）、when,while都有“当……时候”的意思. when既可表示某一点时间,也可以表示某一段时间 .在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生. 例如：1、I was just reading a book when she came into my room.她走进我房间时,我正在看书.

英语语法讲解课件-状语从句课件

I would leave if he came.
I will leave if he comes.
The train had been away when I arrived.
过去配过去
过去配过去
现在配现在
现在配现在
前引：根据主从句的三种时间关系，分为主从句同时发生、主从句都没有发生、主从句一前一后发生三类句型，每种句型分别对应独特的句式
地点状语从句引导地点状语从句的主要有:where, wherever及- where构成的复合词。
We shall go where people are kind.
We received a warm welcome everywhere we arrived. 我们每到一个地方都受到了热烈的欢迎。
01
02
03
条件状语从句最常用的引导词有: if， if only（if 的强调式）, unless (= if not)， as long as， so long as
1
E.G.
2
As long as I live, I shall work hard.
3
You can’t learn it well unless you work hard.
E.G. When/As he was eating his breakfast, he heard the door bell ring. While I was reading, he was playing. The mother didn't go to bed until her little daughter returned home last night. 昨晚母亲等到她的小女儿回家才睡觉。

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状语从句
状语从句简介
状语从句主要用来修饰主句或主句的谓语。一般可分为八大类, 分别表示时间、地点、原因、目的、结果、条件、让步、比较。尽管种类较多, 但由于状语从句与汉语结构和用法相似, 所以理解和掌握它并不难。状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。
一、时间状语从句
when 引导的时间状语从句中，可以用延续性动词，也可以用短暂性动词。如：
I will visit my good friend when I arrive. 当我到达时，我将去看望我的好友。(短暂性动词)
Someone knocked at the door when I was sleeping. 当我正在睡觉时，有人敲门。(延续性动词)
TV.
【考例】—Mum,____ shall we have lunch? —We
will have it when your dad______. [连云港]
A ． when；returns
B ． where returns
C．where；will return D．when；will return
当我们到达机场时, 天正下着雪。
2. He sang __a_s_ he went along. 他边走边唱. 3. ___A_sthe day went on, the weather got hotter.
随着日子天天过去，天气越来越热。 4._W__he_nhe reached home, he had a little rest. 回到家后, 他休息了一会
[答案]A．[解析] 答语中when引导了一个时间状语从句，主句用了一般将来时态，所以从句用一般现在时态，可见正确答案在A与B之中。既然答语用了时间状语来回答，可见问句询问的也一定是时间，从而确定正确答案为A。
【考例1】一Hurry up. The bus is coming．
—Oh, no. We mustn’t cross the street ____the traffic lights
一、时间状语从句
在时间状语从句中，通常要用动词的一般现在时态表示将来时，用一般过去时表示过去将来式。
时间状语从句常用连词有： when, as, while, whenever, after, before, till (until), since, once, as soon as (或the moment ), by the time, no sooner … than, hardly (scarcely) … when, every time等引导。
are green．[福州]
A．after B. since
C. while
ห้องสมุดไป่ตู้
D．until
[答案]D。[解析]本题应从句意人手。until常用于否定句中，构成"not…until"结构，意为“直到……才……”，该句意为“直到交通灯变绿，我们才能穿过马路”。
二、原因状语从句
原因状语从句，常用的引导连词有 because (因为), as (由于)和 since (既然)。
一、时间状语从句
1.考查when, while, as引导，表示“当……时候”。
(1) when 意为“当……时”，引导的时间状语从句表示主句的动作和从句的动作同时或先后发生。如： I feel very happy when you come to see me. 你(们)来看我时，我感到很高兴。 When you are crossing the street, you must be careful. 你( 们)过街道时，一定要小心。
儿。
When/While/As
5.______l was walking down the street，I saw some policemen．
When
6.______they
heard
the
news，they
were
surprised．
7.__W__h_iltehe child was playing with his toys, his parents were watching
一、时间状语从句
注意：while 也可以作并列连词，表转折的关系，相当于but，译为“然而”。如：
I like listening to music, while my brother likes doing sports. 我喜欢听音乐，而我的兄弟爱好运动。 (3) as 意为“当……时”“一边……一边……”“随着”，主从句动作同时发生。如：
As they walked, they talked happily. 他们一边走，一边高兴地交谈着。
疑点解释
三者均可表示“当……的时候”, 如果主句表示是短暂性
动作, 而从句表示的是一段时间,（同时发生）三者
可通用。
1.It was snowing _w__h_enwe got to the airport．
(1)because: 语气最强，回答why时用because，所表示的是直接理由，因果关系不能同so 连用。 because 的从句常放在主句之后
一、时间状语从句
(2)while 意为“当……时”“在……期间”，引导的时间状语从句表示主从句的动作在同一时期发生，常用延续性动词或表示状态的词。如：
They rushed in while we were discussing problems. 当我们正在讨论问题时，他们冲了进来。 Father was cleaning the car while I was playing computer games. 当我正在玩电脑游戏时，爸爸正在清洗汽车。
一、时间状语从句
注意：when 也可以作并列连词，表示一个动作正在进行的时候，突然间发生了另外一件事。如：
I was fishing by the river, when someone called for help. 我正在河边钓鱼，就在那时有人求救。
We were working in the chemistry lab, when the lights went out. 我们正在化学实验室工作，突然灯都熄灭了。