状语从句
在复合句中作状语的从句叫状语从句。
状语从句分为：1. 时间状语从句、2. 地点状语从句、3. 原因状语从句、4条件状语从句、 5让步状语从句、6. 方式状语从句、7. 目的状语从句、8. 结果状语从句、9. 比较状语从句
一． 时间状语从句
1. when/ while/ as 引导的时间状语从句
（1）when 用于主句和从句动作同时发生或从句动作先于主句动作发生。
从句的谓语动词既可以是延续性的，也可以是非延续性的。
When the film began, my telephone rang.
(2)while 用于主从句的两个延续性动作同时发生而又具有对比意义。
从句的谓语动词用延续性动词。
My brother was washing the dishes while I was cleaning the table.
(3)as 意为“一边...... 一边...... ”; “随着”
常用于表示两个动作同时或几乎同时发生；
表述两个发展变化中的情况， 表示在某事发生的过程中另一事发生；
I saw Tom as I was getting off the bus. As I grow older, I also grow smaller.
2. since; before; after 引导时间状语从句
(1) since 意为“自从”引导状语从句，从句常用一般过去时，主句常用现在完成时。 I haven't seen him since he left Beijing.
...... 有多长时间了”
It is / has been six years since she graduated from the university.
（2）before “在...... 之前” “还未...... 就....../ 还没来得及.... 就...... ”
The man left before I could ask for his name.
过了一段时间才......(强调时间之长)
没过多久就...... (强调时间之短)
且 It will be +一段时间+ before + 一般现在时; It was +一段时间+ before + 一般过去时 It will be three months before we meet again.
It was not long before we finished the work.
(3)after 在....... 之后 After I finish my homework, I will have a good rest.
3. till ； until ; not...until 引导时间状语从句
（1）主句是肯定句时
主句是肯定句时，从句也为肯定式，表示动作一直持续到till/ until表示的时间为止， till/ until 意为“直到...... 为止” I will wait here till/ until you come back.
(2)主句是否定句时
not...till/ until 意为“直到...... 才...... ”, 在运用中，常用not...until...
She didn’t arrive till/ until the meeting began.
4. 名词性短语引导时间状语从句
every/ each time 每次 next time 下次 the first time 第一次 the last time 最后一次 Every time I see him, he is working hard. The first time I saw him, he looked young.
5. 表示“一...... 就...... ”的引导词
as soon as; the moment等等 As soon as/The moment I saw it, I fell in love with it.
二．where ， wherever 引导地点状语从句
where 表示特定地点 wherever 表示非特定地点
I will go where he went. 我要去他去过的地方。 I will go wherever he goes .他去哪里我就去哪里。
三．原因状语从句
1. because “因为” 表示直接原因，语气最强，常用于回答why 的提问。
I are tired because I stayed up late last night.
2. since “既然” 语气比because 稍弱，通常置于句首，从句表示显然的或已为人所知的理由。now that 用法含义与之相同。
Since “life is a stage”, we are actaully all actors and actresses.
3. as ”由于” 较口语化，表示比较明显的原因或已知事实。
As it was a public holiday, all the shops were closed.
四． 条件状语从句
条件状语从句的时态：主将从现
1. if 如果 If you want to keep healthy, you should do some exercise.
2. unless 除非 You will be late unless you leave at once.
3. once 一旦 Once you make up your mind, you should keep your promise.
4. as long as/ so long as 只要 As/ So long as you are honest, I will believe in you.
5. only if 只要 从句位于主句之后，主句用正常语序； 从句位于主句之前，主句用部分倒装 You can have a rest only if you finish the work.
Only if you finish the work can you have a rest.
五．让步状语从句
1. although/ though即使 两者意思相同，可互换，但是都不能和but 连用
Although/ Though it was raining hard, they still went on playing football.
2. even if/ even though 即使 引导的从句可用陈述语气，也可用虚拟语气
Even if/ though she was wrong, she insisted on her own opinion.
Even if/ though I were busy, I would go to the party.
3. as 尽管
as 引导的让步状语从句放在主句之前，从句中的表语、状语、谓语部分的实义动词原形需提前置于句首。 Child as he is, he knows a lot.
六． 方式状语从句
七．
1. as 正如、像... You must do as the teacher tells you. 你必须按老师说的做。
2. as if/ as though 仿佛、好像 与事实相反，用虚拟语气； 与事实相符，用陈述语气 He closed his eyes as if/ though he was/ were tired.
七、目的状语从句
in order that / so that 意为“为了” 引导的状语从句常需用情态动词can, could等。 in order that 引导的状语从句可置于主句之前或之后
so that 引导的状语从句只能置于主句之后
In order that he can get good grades, he studies hard.
He studies hard, in order that/ so that he can get good grades.
八．结果状语从句
1. so that “以至于”
He got up late, so that he missed the last bus.
2. so ...that... 如此...... 以至于......
(1) so + adj./ adv. + that... He speaks so fast that no one can understand him.
(2) so + adj. + a/an +可数名词单数 + that... It is so interesting a film that we all like it.
(3) so + many/much/ little + 名词 + that... He earns so little money that he can’t raise his family.
3. such...that... 如此...... 以至于......
(1) such + a/ an + adj. + 可数名词单数 + that... He is such a famous writer that we all know him.
(2) such + adj. + 可数名词复数 + taht... They are such clever boys that we all like them.
(3) such + adj. + 不可数名词 + that... It is such nice weather that we all want to go to the park.
九、比较状语从句
1. as...as... 和...... 一样 He doesn’t play football as well as you do.
2. than We do more exercise than we did last term.
3. the + 比较级，the + 比较级 The more you do ,the more you will get.
状语从句
在复合句中作状语的从句叫状语从句。
状语从句分为：1. 时间状语从句、2. 地点状语从句、3. 原因状语从句、4条件状语从句、 5让步状语从句、6. 方式状语从句、7. 目的状语从句、8. 结果状语从句、9. 比较状语从句
一． 时间状语从句
1. when/ while/ as 引导的时间状语从句
（1）when 用于主句和从句动作同时发生或从句动作先于主句动作发生。
从句的谓语动词既可以是延续性的，也可以是非延续性的。
When the film began, my telephone rang.
(2)while 用于主从句的两个延续性动作同时发生而又具有对比意义。
从句的谓语动词用延续性动词。
My brother was washing the dishes while I was cleaning the table.
(3)as 意为“一边...... 一边...... ”; “随着”
常用于表示两个动作同时或几乎同时发生；
表述两个发展变化中的情况， 表示在某事发生的过程中另一事发生；
I saw Tom as I was getting off the bus. As I grow older, I also grow smaller.
2. since; before; after 引导时间状语从句
(1) since 意为“自从”引导状语从句，从句常用一般过去时，主句常用现在完成时。 I haven't seen him since he left Beijing.
...... 有多长时间了”
It is / has been six years since she graduated from the university.
（2）before “在...... 之前” “还未...... 就....../ 还没来得及.... 就...... ”
The man left before I could ask for his name.
过了一段时间才......(强调时间之长)
没过多久就...... (强调时间之短)
且 It will be +一段时间+ before + 一般现在时; It was +一段时间+ before + 一般过去时 It will be three months before we meet again.
It was not long before we finished the work.
(3)after 在....... 之后 After I finish my homework, I will have a good rest.
3. till ； until ; not...until 引导时间状语从句
（1）主句是肯定句时
主句是肯定句时，从句也为肯定式，表示动作一直持续到till/ until表示的时间为止， till/ until 意为“直到...... 为止” I will wait here till/ until you come back.
(2)主句是否定句时
not...till/ until 意为“直到...... 才...... ”, 在运用中，常用not...until...
She didn’t arrive till/ until the meeting began.
4. 名词性短语引导时间状语从句
every/ each time 每次 next time 下次 the first time 第一次 the last time 最后一次 Every time I see him, he is working hard. The first time I saw him, he looked young.
5. 表示“一...... 就...... ”的引导词
as soon as; the moment等等 As soon as/The moment I saw it, I fell in love with it.
二．where ， wherever 引导地点状语从句
where 表示特定地点 wherever 表示非特定地点
I will go where he went. 我要去他去过的地方。 I will go wherever he goes .他去哪里我就去哪里。
三．原因状语从句
1. because “因为” 表示直接原因，语气最强，常用于回答why 的提问。
I are tired because I stayed up late last night.
2. since “既然” 语气比because 稍弱，通常置于句首，从句表示显然的或已为人所知的理由。now that 用法含义与之相同。
Since “life is a stage”, we are actaully all actors and actresses.
3. as ”由于” 较口语化，表示比较明显的原因或已知事实。
As it was a public holiday, all the shops were closed.
四． 条件状语从句
条件状语从句的时态：主将从现
1. if 如果 If you want to keep healthy, you should do some exercise.
2. unless 除非 You will be late unless you leave at once.
3. once 一旦 Once you make up your mind, you should keep your promise.
4. as long as/ so long as 只要 As/ So long as you are honest, I will believe in you.
5. only if 只要 从句位于主句之后，主句用正常语序； 从句位于主句之前，主句用部分倒装 You can have a rest only if you finish the work.
Only if you finish the work can you have a rest.
五．让步状语从句
1. although/ though即使 两者意思相同，可互换，但是都不能和but 连用
Although/ Though it was raining hard, they still went on playing football.
2. even if/ even though 即使 引导的从句可用陈述语气，也可用虚拟语气
Even if/ though she was wrong, she insisted on her own opinion.
Even if/ though I were busy, I would go to the party.
3. as 尽管
as 引导的让步状语从句放在主句之前，从句中的表语、状语、谓语部分的实义动词原形需提前置于句首。 Child as he is, he knows a lot.
六． 方式状语从句
七．
1. as 正如、像... You must do as the teacher tells you. 你必须按老师说的做。
2. as if/ as though 仿佛、好像 与事实相反，用虚拟语气； 与事实相符，用陈述语气 He closed his eyes as if/ though he was/ were tired.
七、目的状语从句
in order that / so that 意为“为了” 引导的状语从句常需用情态动词can, could等。 in order that 引导的状语从句可置于主句之前或之后
so that 引导的状语从句只能置于主句之后
In order that he can get good grades, he studies hard.
He studies hard, in order that/ so that he can get good grades.
八．结果状语从句
1. so that “以至于”
He got up late, so that he missed the last bus.
2. so ...that... 如此...... 以至于......
(1) so + adj./ adv. + that... He speaks so fast that no one can understand him.
(2) so + adj. + a/an +可数名词单数 + that... It is so interesting a film that we all like it.
(3) so + many/much/ little + 名词 + that... He earns so little money that he can’t raise his family.
3. such...that... 如此...... 以至于......
(1) such + a/ an + adj. + 可数名词单数 + that... He is such a famous writer that we all know him.
(2) such + adj. + 可数名词复数 + taht... They are such clever boys that we all like them.
(3) such + adj. + 不可数名词 + that... It is such nice weather that we all want to go to the park.
九、比较状语从句
1. as...as... 和...... 一样 He doesn’t play football as well as you do.
2. than We do more exercise than we did last term.
3. the + 比较级，the + 比较级 The more you do ,the more you will get.