(共28张PPT)
状语从句
授课老师:Galya
1.状语从句的分类和关系词
2.各种状语从句的用法
CONTENTS
什么是状语从句?
动词 数词
名词 副词
代词 介词
冠词 叹词
形容词 连词
副词性从句
词类/性
从句的分类
用来表示方式、时间、地点、原因、目的、结果等的词
副词
副词性从句=状语从句
He always treats me politely.
用来表示方式、时间、地点、原因、目的等的从句
He always treats me as I treat him.
副词作什么成分?
状语
第一章
状语从句的分类及常用连接词
从句 连接词
时间状语从句 when, while, as, before, after, since, till, until, as soon as, the moment, each time, immediately...
地点状语从句 where, wherever
原因状语从句 because, since, as, now that, in that, given(that)...
从句 连接词
目的状语从句 so that, in order that, for fear that, in case...
结果状语从句 so that, so...that, such...that...
条件状语从句 if, unless, as/so long as, in case, on condition that, if only, supposing/providing/provided (that)...
从句 连接词
让步状语从句 though, although, even though/if, as, while, whatever, however, no matter+特殊疑问词...
方式状语从句 as, as if/as though...
比较状语从句 as...as..., not as/so...as, than, the+比较级, the+比较级...
第二章
各种状语从句的用法
时间状语从句
1.时间状语从句
从句 连接词
时间状语从句 before, after, when, while, as, since, till, until, as soon as, the moment, immediately, each time, ...
(1)when, while, as
连词 谓语动词 用法
when “当......时候”,可以延续性动词或短暂性动词连用 从句的动作和主句的动作可以同时发生,也可以先后发生
while “当......时候”,与延续性动词连用 从句的动作与主句的动作同时发生
as “一边......一边......;随着”,与延续性动词连用 表示主从句的动作相伴发生或交替进行
注意 如果主句是短暂性动作,从句是延续性动词的进行时态,when, while, as可互换 We'll start ______ the captain comes.
You can go swimming ______ I am having lunch.
____ he grew older,he became less active.
_______________ I was waiting at the bus stop.
I came across an old friend of mine.
用when, while,as填空
when
while
As
When/While/As
(2)after和before的用法
连接词 词义 常用句式
after 在......之后 没有常用句式
before 在......之前; 还没......就......; ......才......; 还没来得及...... It will (not) be +一段时间+before...
(没有)过......时间才......
It was not long before...
不久......就......
It was+时间段+before...
过了......(时间)才......
(2)after和before的用法
1.after 意为“在......之后”
He changed his idea after he thought it over.
(2)after和before的用法
2.before意为“在......之前;还没......就......;......才......;还没来得及......”
It will (not) be +一段时间+before...
(没有)过......时间才......
It was not long before... 不久......就......
It was+时间段+before... 过了......(时间)才......
I had finished my dissertation before my supervisor went abroad.
在我的导师出国之前,我已完成了我的学位论文。
It will be many years before we meet again.
可能要过许多年我们才能再见了。
It was three days before he came back.
他三天后回来。
Someone called me up in the middle of the night, but he hung up before I could answer the phone.
有人深更半夜给我打电话,但我还没来得及接对方就挂断了。
(3)since的用法
I haven't heard from him since he left.
他走之后,我还没收到过他的信。
①since意为“自从……”,引导的时间状语从句
常用句型:It is/has been十一段时间+since...
主句用一般现在时或现在完成时,
从句用一般过去时
It is two years since the war broke out.
(broke out是短暂性动词)
自从战争爆发以来已经两年了。
It is two years since I smoked.
(smoke是延续性动词)
自从我不抽烟已经两年了。
②since 从句的谓语动词既可以是延续性动词,也可以是短暂性动词。
如果是延续性动词,主句的时间起点应为从句动词的动作结束时。
(4)till, until和not until的用法
连词 位置 用法 例句
until 句首、句中 主句的谓语动词是延续性动词,表示“某动作延续到某时间点停止” You may stay here until/till the rain stop.
till 句中 连词 位置 用法 例句
not...until 一般用法 主句的谓语动词是短暂性动词,表示“某动作直到某时间才开始” The child won’t go to bed until/till the rain stops.
倒装句用法 Not until his mother returned did the child go to bed.
强调句用法 It was not until his mother return that the child wnent to bed.
as soon as, the moment, the instant, the minute,
the second, immediately, instantly, directly, hardly/scarcely...when, no sooner...than...等
(5)表示“一......就”的连词
As soon as we got home, the telephone rang.
我一看见她就认出她来了。
我们一到家,电话就响了。
I recognized her immediately I saw her.
He had no sooner finished his speech than the students startedcheering.
The moment I heard the voice, I knew my father was coming.
我一听到这个声音,就知道爸爸来了。
他刚演讲完毕,学生们就开始欢呼。
(6)其他常见的引导时间状语从句的连词(短语)还有
each time, every time, next time, the first/last time, any time, by the time, whenever等
名词短语用作连词,引导时间状语从句,表示“每当......;每次......;下次......”
By the time you come back, we will have finished the job.
到你回来的时候,我们将已经完成这项工作。
Whenever we met with difficulties, they came to help us.
每当我们遇到困难,他们就来帮忙。
You can call me any time you want to.
任何时候你想给我打电话都可以打。