部分倒装的概念：

倒装英语句子的主语通常位于谓语动词之前，这种语序被称为正常语序。但有时出于修辞或某种特殊的语法结构的需要，需要将谓语动词放在主语之前，这种语序则叫倒装语序。主语和助动词倒置叫部分倒装。

部分倒装是指将谓语的一部分如助动词或情态倒装至主语之前。如果句中的谓语没有助动词或
情态动词，则需添加助动词do, does或did，并将其置于主语之前。
1、句首为否定或半否定的词语，如no, not, never, seldom, little, hardly, at no time,
    in no way, not until… 等。
　　Never have I seen such a performance.
　　Nowhere will you find the answer to this question.
　　Not until the child fell asleep did the mother leave the room.
  　当Not until引出主从复合句，主句倒装，从句不倒装。
    注意：如否定词不在句首不倒装。
　　      I have never seen such a performance.
　　      The mother didn't leave the room until.
2、以否定词开头作部分倒装
   如 Not only…but also, Hardly/Scarcely…when, No sooner… than
　 Not only did he refuse the gift, he also severely criticized the sender.
　 Hardly had she gone out when a student came to visit her.
　 No sooner had she gone out than a student came to visit her. 
典型例题
   No sooner___ than it began to rain heavily.
   A. the game began　　　　　 B.　has the game begun
   C. did the game begin　　　 D.　had the game begun
  答案D. 以具有否定意义的副词放在句首时，一般采用倒装句(谓语前置)。这类表示否定意义
         的词有never, seldom, scarcely, little, few, not, hardly, 以及not only…but
        (also), no sooner…than, hardly… when scarcely… when　等等。
  注意：只有当Not only… but also连接两个分句时，才在第一个分句用倒装结构。如果置于句
        首的Not only… but also仅连接两个并列词语，不可用倒装结构。
        Not only you but also I am fond of music.
3、so, neither, nor作部分倒装
   表示“也”、“也不”的句子要部分倒装。　　　　
　 Tom can speak French. So can Jack.
　 If you won't go, neither will I.
典型例题
　 ---Do you know Jim quarreled with his brother?
　 ---I don't know, _____.
　 A. nor don't I care　　B. nor do I care　　C. I don't care neither　　D. I don't care also
   答案：B. nor为增补意思"也不关心"，因此句子应倒装。A错在用 don't 再次否定， C neither 用法不
            对且缺乏连词。 D缺乏连词。
   注意：当so引出的句子用以对上文内容加以证实或肯定时，不可用倒装结构。意为“的确如此”。
　 Tom asked me to go to play football and so I did.
　 ---It's raining hard.　　　---So it is.
4、only在句首要倒装的情况
   Only in this way, can you learn English well.
　 Only after being asked three times did he come to the meeting.
　 如果句子为主从复合句，则主句倒装，从句不倒装
　 Only when he is seriously ill, does he ever stay in bed.
5、as, though 引导的倒装句
   as / though引导的让步从句必须将表语或状语提前 （形容词, 副词, 分词, 实义动词提前）。
注意：
1）句首名词不能带任何冠词。
2）句首是实义动词, 其他助动词放在主语后。如果实义动词有宾语和状语,　 随实义动词一起放在主语
   之前。
　 Try hard as he will, he never seems able to do the work satisfactorily.
   注意：让步状语从句中，有though，although时，后面的主句不能有but，但是 though 和yet可连用。
6、其他部分倒装
1）so… that 句型中的so 位于句首时，需倒装。
　 So frightened was he that he did not dare to move an inch.
2）在某些表示祝愿的句型中：
　 May you all be happy.
3）在虚拟语气条件句中从句谓语动词有were, had, should等词，可将if 省略，把 were, had, should
   移到主语之前，采取部分倒装。
　 Were I you, I would try it again.

部分倒装：

1、含有否定意义的副词位于句首时的倒装：
在正式文体中，never, seldom, rarely, little, hardly, scarcely, no sooner, no longer, nowhere等含有否定意义的副词若位于句首，则其后要用部分倒装：
如：I shall never forgive him./ Never shall I forgive him. 我永远不会宽恕他。
        He seldom goes out for dinner./Seldom does he go out for dinner. 他很少出去吃饭。
        She hardly has time to listen to music./Hardly does she have time to listen to music. 他几乎没时间听音乐。
        He little realize show important this meetingis./Little does he realize how important this meeting is. 他不甚明白这个会议的重要性。   
        We had no sooner reached the airport than the plane took off./No sooner had we reached the airport than the plane took off. 我们刚到机场,飞机就起飞了。
注：(1)对于not…until句型，当not until…位于句首时，其后的主句要用倒装语序：
如：He didn't leave the room until the rain stopped./Not until the rain stopped did he leave the room. 雨停了之后他才离开这房间。
        (2)某些起副词作用的介词短语，由于含有否定词，若位于句首，其后要用部分倒装：
如：On no accounts must this switch be touched. 这个开关是绝不能触摸的。
        In[Under] no circumstances will I lend money to him. 无论如何我也不会再借钱给他了。但是，in no time(立即，马上)位于句首时，其后无需用倒装语序：
如：In no time he worked out the problem. 他马上就算出了那道题。
2、“only+状语”位于句首时的倒装：
当一个状语受副词only的修饰且置于句首时，其后用部分倒装语序：
如：Only then did he realize that he was wrong. 到那时他才意识到他错了。
        Only in this way are you able to do it well. 你只有用这种方法才能把它做好。
        Only when he returned home did he realize what had happened. 当他回到家里时,才知道出了什么事。
3、“so+形容词或副词”位于句首时的倒装：
副词so后接形容词或副词位于句首时，其后用部分倒装：
如：So cold was the weather that we had to stay at home. 天气太冷，我们只好呆在家里。
        So fast does light travel that we can hardly imagine its speed. 光速很快，我们几乎没法像它的速度。
        So sudden was the attack that we had no time to escape. 袭击来得非常突然，我们来不及逃跑。
4、“So+助动词+主语”倒装：
当要表示前面提出的某一肯定的情况也同样适合于后者，通常就要用“So+助动词+主语”这种倒装结构：
如：You are young and so am I. 你年轻，我也年轻。
        She likes music and so do I. 她喜欢音乐，我也喜欢。
        If he can do it, so can I. 要是他能做此事，我也能。
注：(1)若前面提出某一否定的情况，要表示后者也属于同样的否定情况，则应将其中的so改为neither或nor：
如：You aren't young and neither am I. 你不年轻，我也不年轻。
        She hasn't read it and nor have I. 她没有读它，我也没有读。
        (2)注意该结构与表示强调或同意的“so+主语+特殊动词”结构的区别：
如："It was cold yesterday." "So it was."“昨天很冷。”“的确很冷。”
        "Father, you promised." "Well, so I did."“爸爸，你答应过的。”“嗯，是答应过。”
5、由not only…but also引出的倒装：
当not only…but also位于句首引出句子时，not only后的句子通常用部分倒装形式：
如：Not only is he a teacher, but he is also a poet. 他不仅是一位教师，而且是一位诗人。
        Not only did he speak more correctly, but he spoke more easily. 不仅他讲得更正确，也讲得更不费劲了。
6、虚拟条件句省略if后构成的倒装：
当if引导的虚拟条件从句中含有had, were, should等时，如将if省略，则要将had, were, should等移到主语前，构成倒装句：
如：Had you come yesterday, you would have seen him. 若你昨天来，你就会见到他了。
        Should you require anything give me a ring. 如果需要什么，可以给我打电话。
        Were it not for your help, I would still be homeless. 要不是你帮助，我会仍然无家可归。
注：省略if后提前的had不一定是助动词：
如：Had I money, I would buy it. 假若我有钱，我就会买它。

1.理解并掌握部分倒装的基本结构及用法。
2.学会做相应的习题。