语法精讲
1. 简介
倒装有两种。将主语和谓语完全颠倒过来，叫做完全倒装（complete inversion）。
【例】Then began a bitter war between the two countries. 于是两国之间开始了恶战。
只将助动词（包括情态动词）移至主语之前，叫做部分倒装（partial inversion）。
At no time can the entrance be left unguarded. 入口需要随时有人把守。
2. 四级必考句型
（1） Among the disadvantages that may bring to are that + S. + V.， making + n. + adj.
【分析】有时候，为了强调“介词 + 宾语”结构，我们把它置于句首，此时句子需要全部倒装，在本句中我们把谓语动词“are”放在了主语结构“that…”的前面。
Among the disadvantages that cars may bring to our lives are that we could spend more time in traffic jams and we would likely spend more money on operation and maintenance fees， making our schedules tighter and our pockets lighter！
（2） With these steps， we can change our society into one out of which comes the possibility that
【分析】句中的定语从句“out of which comes the possibility…”是完全倒装句。
With these steps， we can change our society into one out of which comes the possibility that natural resources will be fully cherished.
（3） There is a real possibility that ， should there be a 。
【分析】Should there be a…是省略if并部分倒装的将来时虚拟条件句。还原后为：If there should be a…
There is a real possibility that we can solve this problem completely， should there be cooperation among all parties involved.
（4） never， hardly， seldom， rarely， not， until…，scarcely， in no case（不管怎样也不），in no way（不管怎么也不），by no means（决不），on no account（不论什么原因也不），at no time（无论什么时候也不）等否定词放在句首时，句子要倒装。
By no means shall we cease to protect our environment.
（5） It was very late. Exhausted though she was， there was no hope of her being able to fall asleep.
【分析】从属连词as和though也可以用于让步状语从句中。这种从句必须以形容词（或形容词化的分词）、名词或动词原形开头，主句必须位于从句之后。
1） Small as a bicycle is， it can bring a lot of convenience to our lives.
2） Foolish though he looks， he always seems to make the wisest proposals. （他看起来样子傻傻的，可似乎总是能提出最聪明的建议。）
3） Try as you may， you will never succeed. （你尽管可以试，但决不会成功）。
