老师好！

Though(the statue was 省略) designed by Auguste, the statue was built on a metal framework constructed by Eiffel.

这句话中由though引导的让步状语从句，从句主语与主句主语相同，说以从句省略了the statue was。

解答：以上说法是正确的。

我记得老师曾说过after（介词）引导的时间状语从句，从句不得省略主语与be。

就此关于状语从句的省略问题，请老师详细讲下，感谢！

解答如下：

(1)after/before 为介词时候，后面接名词/代词/动名词 形式。

After completing and signing it, please return the form to us in the envelope provided.

填完表格并签名后，请装进所提供的信封里寄还给我们。

She travelled toIndiaafter taking her A levels. 

她参加完高等程度考试后去印度旅行了。

After travelling for three days I slept for twenty hours at a stretch.

连续3天旅行之后，我一连睡了20个小时。

(2)after/before 为连词的时候，后面接完成的句子。

After I finished my job,I sat down to read a newspaper.

干完活后我坐下来读报。

After he goes, we shall eat.

他走之后,我们就吃饭。

I'll leave after he comes back.

他回来后我就走。

状语从句省略用法版本(1)

【一】状语从句中的省略省略句的条件

(1)当从句的主语和主句的主语一致(或者从句的主语为it)．

(2)从句谓语中包含be动词．如：be doing,be done, be to do, be +adj

在此种情况下可以省去从句的主语和be动词．保留be之后的部分，被保留部分常为现在分词、过去分词、不定式、形容词等。

Don’t speak until（you are）spoken to .                                       

I’ll buy a TV set if （it is ）necessary.                                                                      While（ I was ）walking walking alone in the street, I heard my name called.        Tom raised his hand as if (he was ) to say something.

【二】常见的几种状语从句的省略

(1)when，while，as, until引导的时间状语从句的省略

 while(they are)visiting the city．they reeeived a warm welcom

 when(he was)asked why he was late，he kept silent．

注意After finishing his homework,he went home happily. 

 Before being repaired, the TV set needs a careful examination.                

(2)if，unless，once引导的条件状语从句的省略

 Onee(it is)begun．it must be done well．

 Unless（you are invited) to speak, you should remain silent at the conference.

 Correct mistakes, if any. 

(3)though，although,even if,even though引导的让步状语从句的省略

 Though lacking money, his parents managed to send him to university.

(4)as though，as if，as引导的方式状语从句的省略

 He shook his head as if (he was）to say: “Don’t trust her”.                                    She left the room hurriedly as if( she was) angry.                           

 He stared at the girl as if (he was) seeing her for the first time.

 You should finish the homework as (you are)required.

(5). than引导的比较状语从句的省略

 They sent us much more materials than required.

(6)since，before，after引导的状语从句有时可以变成介词短语或分词短语。

They had not met any more since leaving（=since they left）school.    

Having finished（After he had finished）middle school，she entered Beijing University.    

(7)原因状语从句如果主从句主语一致，也可以将从句省略为分词短语，介词短语或独立结构。

Being（=As he is）the oldest，Bill looks after his little sisters.    

Because of smoking（=Because he smokes）too much，Linda doesn’t look healthy.

(8)so that，in order that引导的目的状语从句，若主从句主语一致，可以用动词不定式短语so as to或in order to代替。如：

I left early so as to（=so that I could）catch the first bus.    

(9)so that，so…that引导的结果或程度状语从句如果主从句主语一致，可以用“enough + 不定式”或“too…to”结构代替。如：

Tom studied hard enough to pass（=Tom studied hard so that he passed）the examination.    

She was too tired to（so tired that she couldn't）go any farther.

(10)if引导的条件状语从句，常可省去从句中的主语和系动词，转换为介词短语、不定式短语、分词短语或独立结构。如：

If（it is）possible，I will help you.    

With her help（=If I had help from her），I could do the experiment.

状语从句省略用法版本(2)

状语从句主谓成分的省略，须遵循下面原则：

【一】当从句的主语与主句的主语一致时，从句可以省略主语，从句的谓语动词采用其V-ing结构。

Although working very hard, he failed in the final exam. (Although he worked very hard,…)

After taking the medicine, she felt much better. (After she took the medicine,…)

If going there by air, we’ll have to pay twice the fare. (If we go there by air,…)

【二】当从句的主语和主句的主语一致时，若从句的谓语动词是系动词be或包含be的某种形式，此时从句的主语和be动词通常可以一同省略。常见于以下几种形式:

(1)连词+形容词

Whenever (she is) free, she often goes shopping.

她有空就去逛商店。

Work hard when (you are) young, or you'll regret.

少壮不努力,老大徒伤悲。

She hurried out of the room, as if (she was) angry.

(2) 连词+名词

While (he was) a young boy, he was always ready to help others.

(3) 他在孩提时代就乐于助人。

He could write poems when (he was) yet a child.

(4) 连词+现在分词

While (she was) walking along the river bank, she was singing a pop song.

(5) 她沿着河堤边走边唱着流行歌曲。

The boy is running impatiently here and there as if (he is) searching for something lost on the sports ground. 

这男孩很不耐心地在操场上到处跑着仿佛在找什么东西。

(4)连词+过去分词

If (it is) well read, the book will give you much to think.

Unless (they were) asked to answer questions, the students were not supposed to talk in Prof. Li’s class.

(5)连词+不定式

He stood up as if (he were) to say something.当时他站起来好像要说什么。

He wouldn't solve the problem even if (he were) to take charge.即使他来负责,他也解决不了这个问题。

(6)连词+介词短语

She looked anxious as though (she was) in trouble.

她看上去很焦急,好像遇到了麻烦。

He looked everywhere as if (he was)in search of something .

他到处看似乎在找什么东西。

He came across the picture while (he was) on a visit to New York.

【三】若从句的主语和主句的主语不一致，但和主句的宾语一致时，从句中的主语和be动词亦常可省略。例如：

Father advised me not to say anything until (I was) asked.

Granny told the children not to talk while (they were) eating.

【四】当从句的主语是it, 且谓语动词是be或包含be的某种形式时, it和be常可同时省略。例如:

If (it is) possible, he will help you out of the difficulty.

如果可能的话,他会帮你摆脱困境。

You must attend the meeting unless (it is) inconvenient to you.

除非情况对你来说不方便,否则你必须出席这次会议。

【五】从状语从句的类别看，此种省略常见于一下几种情形

（一）时间状语从句

常用于由when, while, before, after, whenever, till, until, since, once, as soon as

等引导的时间状语从句。

When (she was) very young, she began to learn to play the piano.

她很小时，就开始学习弹钢琴。

When arriving, send me a telegram. (When you arrive, send me a telegram.)

到达之后，来个电报。

While (I was) at college, I began to know him, a strange but able student.

我在上大学时就开始认识他，一个奇怪但有能力的学生。

Before leaving, turn off all the lights. (Before you leave, turn off all the lights.)

走之前，请关闭所有的灯。

Whenever (it is ) possible, you should come and help.

不管什么时候只要有可能就来帮忙。

Don’t come in until (you are) asked to.

不叫你请你不要进来。

You should let us know the result as soon as (it is) possible.

你应尽快让我们知道结果。

（二）让步状语从句

常用于由though, although, even if, even though, while, whether…or…等引导的让步状语从句。

He is a good man, though sometimes (he is) rather dull.

他真是个好人，尽管有时有点无聊。

Although (he was) frightened, he managed to ran away.

Even if (I am ) invited to, I won’t go to such a bad lecture.

即使邀我去，我都不想听如此坏的报告。

Her opinion, whether (it was) right or wrong, deserved our attention.

（三）条件状语从句

常用于由if, unless等引导的条件状语从句。

Send the goods now if (they are) ready. 

货物如果准备好了，请送过来。

He will come if (he is) asked. 

如果叫他来，他就来。

If (it is) necessary, ring me at home. 

如果有可能，朝我家里打电话。

Come along with me if (it is) possible. 

如果有可能和我一起去吧.。

If (it is) true, this will cause us a lot of trouble. 

如果是真的，这会给我们带来很多麻烦。

He won't go there with us unless (he is) invited.

除非受到邀请,否则他不会和我们一道去那里。

You should stay where you are, unless (you are) asked to leave.

你应呆在你现在的地方不动，除非叫你动。

（四）方式状语从句

常用于由as if, as though等引导的方式状语从句。

He acts as if (he were) a fool. 

他的行为举止好象是个傻子。

He opened the desk, as if (he was) in search of something important.

他打抽屉仿佛要找一件什么重要的东西。

The football player is rolling on the ground as if (he is) hurt badly in the leg.

足球运动员在操场上打着滚似乎他的腿伤得厉害。

（五）比较状语从句

常用于以下结构。

The exhibition is more interesting than (it was) expected .

这次展览比被预料的有趣的多

She has finished the work earlier than (it has been ) expected.

她这项工作比预料的提前完成。

（六）地点状语从句

常用于where(ver) possible, where(ver) necessary等结构：

Put in articles wherever necessary in the following passages.

在下列文章中需要的地方填入冠词。