初中英语状语从句课件(共68张ppt)
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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.
妈妈担心,因为小爱丽丝病了,特别是他父亲不在家的时候。
(此时as ,when, while可通用)
2.由before和after引导的时间状语从句。
注意before引导的从句不再用否定式的谓语,并且当
before引导的从句位于主句之后,有时译成“就,才”。
还要注意主句和从句之间的时间关系。当主句用将来时,
状语从句的种类
1. 时间状语从句 2. 地点状语从句 3. 原因状语从句 4. 目的状语从句 5. 结果状语从句 6. 条件状语从句 7. 让步状语从句 8. 比较状语从句
9. 方式状语从句 10. 状语从句的简化 a.连词+形容词 b.连词+名词 c.连词+现在分词 d.连词+过去分词 e.连词+不定式 f.连词+介词短语
我和你见面以后,你到哪里去了?
It is four years since my sister lived in Beijing. 我妹妹 不在北京住有四年了。
It is five months since our boss was in Beijing.我们
I like playing football while you like playing basketball.我喜欢踢足球,而你喜欢打篮球。 (对比)
As表示“一边……一边”,as引导的动作是 延续性的动作,一般用于主句和从句动作同时发 生;as也可以强调“一先一后。例如:
We always sing as we walk.我们总是边走边 唱。(as表示“一边……一边”)
We were about to leave when he came in.我 们就要离开,就在那时他进来了。(瞬间动词)
While引导的从句的谓语动词必须是延续性的, 并强调主句和从句的动作同时发生(或者相对 应)。并且while有时还可以表示对比。
例如:
While my wife was reading the newspaper, I was watching TV. (was reading是延续性的动词, was reading和was watching同时发生)
she thought i was tal about her daughter, while, in fact, i was
tal about my daughter.
他以为我在谈她女儿,然而,实际上在谈论我女儿。(表转折,
对比,when, as都不能代替它)
while the alien was buying a souvenir, the girl called the police.
As we was going out, it began to snow.当我们 出门时,开始下雪了。(as强调句中两个动作紧 接着先后发生,而不强调开始下雪的特定时间)
as when while的辨析 as when while都表示主、从句动作同时发生,
三者差异如下:
表示“一边。。。一边"的意思 as 强调两个动作同时进行,并表示对比时 用于发生时间较短时
他到家的时候,他爸爸已经走了。
By the time I got to school, the class had already began.
我到校时,已经开始上课了。
注意事项
when, while和as的区别
when引导的从句的谓语动词可以是延 续性的动词,又可以是瞬间动词。并且 when有时表示“就在那时”。
I worked until he came back.我工作到他回来为止。
I didn't work until he came back.他回来我这才开始
工作。
Please wait until I arrived.在我到达之前请等我。
4.由since引导的时间状语从句。
since引导的从句的谓语动词可以是延续性位于句 首、句末或句中。enough用作状 语修饰形容词和副词时必须后置。
状语从句 (Adverbial Clause) 状语从句指 句子用作状语时,起副词作用的句子。它 可以修饰谓语、非谓语动词、定语、状语 或整个句子。根据其作用可分为时间、地 点、原因、条件、目的、结果、让步、方 式和比较等从句。状语从句一般由连词(从 属连词)引导,也可以由词组引起。从句位 于句首或句中时通常用逗号与主句隔开, 位于句尾时可以不用逗号隔开。
1 时间状语从句
由以下连词引导:
when while as after before as soon as since till /until
by the time 在时间状语从句中,要注意时态一致。一般
情况下主句是将来时的时候,从句主要用一般现在时。
1.when在...的时候
Mozart started writing music when he was four
China three years ago.
自格林先生来中国以来,他就在这所学校教书。
8 till /until直到。。。
都可以作连词,连接时间状语,也可以作介词,与其
它词构成介词短语,在句中作状语。(强调将一般用until)
They walked till /until it was dark. 他们一直走到天黑。
四天才能回来。
Einstein almost knocked me down before he saw me.
爱因斯坦几乎把我撞倒才看到我。
My father had left for Canada just before the letter arrived.我父亲恰好在信到之前去加拿大了。
After we had finished the work, we went home.完成工作之后,我们回家了。(从句用过 去完成时,主句用一般过去时)
Homework
写一篇记叙文(叙事)。
3.由till或until引导的时间状语从句。 till和until一般情况下两者可以互换,但是在
例如:
When she came in, I stopped eating.她进来时, 我停止吃饭。(瞬间动词)
When I lived in the countryside, I used to carry some water for him.当我住在农村时,我常 常为他担水。(延续性的动词)
7.since 自。。。以来 到现在
表示自过去的一个起始时间点到目前(说话时间)为止
的一段持续时间。主句一般用现在完成时,从句用一般过
去时。还可以用作介词,本句从句还可以用短语:since
three years ago(从三年前至今)表示。
Mr Green has taught in that school since he came to
I'll let him know as soon as she comes. 她一来,我就会让他知道。 4.after在...之后 He left the classroom after he had finished
his homework . 他做完作业之后就离开教室
5.before 在...之前 Mr. Brown had worked in a bank for a year
强调句型中多用until。并且要注意的是:如果主 句中的谓语动词是瞬时动词时,必须用否定形式; 如果主句中的谓语动词是延续性动词时,用肯定 或否定形式都可以,但表达的意思不同。例如: I didn't go to bed until(till) my father came back.直到我父亲回来我才上床睡觉。 It was not until the meeting was over that he began to teach me English.直到散会之后他才 开始教我英语。
(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)
lHe 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。
主句动词一般表达 “正在” “即将”.
while, as不能代替
从句总是用现在时;如果before引导的从句谓语用的是过
去时,则主句动词多用过去完成时,这样以便体现动作发
生的先后。After表示主句动作发生在从句动作之后。主句 和从句的动作的时间关系正好与before引导的从句相反。 例如:
It will be four days before they come back. 他们要过
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)
By the time he gets there , his father has already gone.
years old.
(在)莫扎特4岁的时候,开始写音乐作品。
2.while在...期间
He visited a lot of places while he was traveling.
他在旅行期间参观了许多地方。
3.as在...的同时;一边...一边... We alwalys sing as we walk. 我们总是一边走一边唱。
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。
可以是瞬时动词。一般情况下,从句谓语动词用一般过去
时,而主句的谓语动词用现在完成时。但在It is +时间
+since从句的句型中,主句多用一般现在时。例如:
I have been in Beijing since you left. 自从你离开以
来,我一直在北京了。
Where have you been since I last saw you? 自上次
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.
妈妈担心,因为小爱丽丝病了,特别是他父亲不在家的时候。
(此时as ,when, while可通用)
2.由before和after引导的时间状语从句。
注意before引导的从句不再用否定式的谓语,并且当
before引导的从句位于主句之后,有时译成“就,才”。
还要注意主句和从句之间的时间关系。当主句用将来时,
状语从句的种类
1. 时间状语从句 2. 地点状语从句 3. 原因状语从句 4. 目的状语从句 5. 结果状语从句 6. 条件状语从句 7. 让步状语从句 8. 比较状语从句
9. 方式状语从句 10. 状语从句的简化 a.连词+形容词 b.连词+名词 c.连词+现在分词 d.连词+过去分词 e.连词+不定式 f.连词+介词短语
我和你见面以后,你到哪里去了?
It is four years since my sister lived in Beijing. 我妹妹 不在北京住有四年了。
It is five months since our boss was in Beijing.我们
I like playing football while you like playing basketball.我喜欢踢足球,而你喜欢打篮球。 (对比)
As表示“一边……一边”,as引导的动作是 延续性的动作,一般用于主句和从句动作同时发 生;as也可以强调“一先一后。例如:
We always sing as we walk.我们总是边走边 唱。(as表示“一边……一边”)
We were about to leave when he came in.我 们就要离开,就在那时他进来了。(瞬间动词)
While引导的从句的谓语动词必须是延续性的, 并强调主句和从句的动作同时发生(或者相对 应)。并且while有时还可以表示对比。
例如:
While my wife was reading the newspaper, I was watching TV. (was reading是延续性的动词, was reading和was watching同时发生)
she thought i was tal about her daughter, while, in fact, i was
tal about my daughter.
他以为我在谈她女儿,然而,实际上在谈论我女儿。(表转折,
对比,when, as都不能代替它)
while the alien was buying a souvenir, the girl called the police.
As we was going out, it began to snow.当我们 出门时,开始下雪了。(as强调句中两个动作紧 接着先后发生,而不强调开始下雪的特定时间)
as when while的辨析 as when while都表示主、从句动作同时发生,
三者差异如下:
表示“一边。。。一边"的意思 as 强调两个动作同时进行,并表示对比时 用于发生时间较短时
他到家的时候,他爸爸已经走了。
By the time I got to school, the class had already began.
我到校时,已经开始上课了。
注意事项
when, while和as的区别
when引导的从句的谓语动词可以是延 续性的动词,又可以是瞬间动词。并且 when有时表示“就在那时”。
I worked until he came back.我工作到他回来为止。
I didn't work until he came back.他回来我这才开始
工作。
Please wait until I arrived.在我到达之前请等我。
4.由since引导的时间状语从句。
since引导的从句的谓语动词可以是延续性位于句 首、句末或句中。enough用作状 语修饰形容词和副词时必须后置。
状语从句 (Adverbial Clause) 状语从句指 句子用作状语时,起副词作用的句子。它 可以修饰谓语、非谓语动词、定语、状语 或整个句子。根据其作用可分为时间、地 点、原因、条件、目的、结果、让步、方 式和比较等从句。状语从句一般由连词(从 属连词)引导,也可以由词组引起。从句位 于句首或句中时通常用逗号与主句隔开, 位于句尾时可以不用逗号隔开。
1 时间状语从句
由以下连词引导:
when while as after before as soon as since till /until
by the time 在时间状语从句中,要注意时态一致。一般
情况下主句是将来时的时候,从句主要用一般现在时。
1.when在...的时候
Mozart started writing music when he was four
China three years ago.
自格林先生来中国以来,他就在这所学校教书。
8 till /until直到。。。
都可以作连词,连接时间状语,也可以作介词,与其
它词构成介词短语,在句中作状语。(强调将一般用until)
They walked till /until it was dark. 他们一直走到天黑。
四天才能回来。
Einstein almost knocked me down before he saw me.
爱因斯坦几乎把我撞倒才看到我。
My father had left for Canada just before the letter arrived.我父亲恰好在信到之前去加拿大了。
After we had finished the work, we went home.完成工作之后,我们回家了。(从句用过 去完成时,主句用一般过去时)
Homework
写一篇记叙文(叙事)。
3.由till或until引导的时间状语从句。 till和until一般情况下两者可以互换,但是在
例如:
When she came in, I stopped eating.她进来时, 我停止吃饭。(瞬间动词)
When I lived in the countryside, I used to carry some water for him.当我住在农村时,我常 常为他担水。(延续性的动词)
7.since 自。。。以来 到现在
表示自过去的一个起始时间点到目前(说话时间)为止
的一段持续时间。主句一般用现在完成时,从句用一般过
去时。还可以用作介词,本句从句还可以用短语:since
three years ago(从三年前至今)表示。
Mr Green has taught in that school since he came to
I'll let him know as soon as she comes. 她一来,我就会让他知道。 4.after在...之后 He left the classroom after he had finished
his homework . 他做完作业之后就离开教室
5.before 在...之前 Mr. Brown had worked in a bank for a year
强调句型中多用until。并且要注意的是:如果主 句中的谓语动词是瞬时动词时,必须用否定形式; 如果主句中的谓语动词是延续性动词时,用肯定 或否定形式都可以,但表达的意思不同。例如: I didn't go to bed until(till) my father came back.直到我父亲回来我才上床睡觉。 It was not until the meeting was over that he began to teach me English.直到散会之后他才 开始教我英语。
(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)
lHe 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。
主句动词一般表达 “正在” “即将”.
while, as不能代替
从句总是用现在时;如果before引导的从句谓语用的是过
去时,则主句动词多用过去完成时,这样以便体现动作发
生的先后。After表示主句动作发生在从句动作之后。主句 和从句的动作的时间关系正好与before引导的从句相反。 例如:
It will be four days before they come back. 他们要过
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)
By the time he gets there , his father has already gone.
years old.
(在)莫扎特4岁的时候,开始写音乐作品。
2.while在...期间
He visited a lot of places while he was traveling.
他在旅行期间参观了许多地方。
3.as在...的同时;一边...一边... We alwalys sing as we walk. 我们总是一边走一边唱。
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。
可以是瞬时动词。一般情况下,从句谓语动词用一般过去
时,而主句的谓语动词用现在完成时。但在It is +时间
+since从句的句型中,主句多用一般现在时。例如:
I have been in Beijing since you left. 自从你离开以
来,我一直在北京了。
Where have you been since I last saw you? 自上次