副词only+状语放在句首时

only+状语从句，从句不倒装，主句倒装

如：Only then did I see life was not easy.只有那时我才知道生活是不易的。

Only in this way can you use the computer well.只有用这种方法你才能把电脑学好。

0nly when he is seriously ill does he ever stay in bed.只有他病重时，他才待在床上。

So引导的倒装句

so作"也"讲时，引导的句子用倒装语序，表示前面所说的肯定情况也适用于另一人（或物）。其句型是：So+be（have，助动词或情态动词）+主语。

如：She has been to Tokyo.So have I.她去过东京，我也去过。

He can send emai ls to his former classnates.So can she他能电子邮件给以前的同学，她也能。

He went to the film last night.So did I.昨天晚上他去看电影了，我也去了。

注意：如果对前面所说的内容，加以肯定，或不作"也"讲而只起连词作用，表示一种结果的意思，那不倒装。

-Jack won the first prize in the contest.杰克在比赛中获一等奖。

-So he did.确实是的。

-It is cold today.今天很冷。

-So it is and so was it yesterday.确实是很冷，昨天也很冷。

His mother told hin to go to the film.So he did.他母亲叫他去看电影，他就去了。

neither/nor引导的句子

neither/nor引导的句子用倒装语序，用于对前面所说的否定内容表示同样的看法

如：I cannot swim.Neither can he.我不会游泳，他也不会。

注意：如果前面所说的内容既有肯定又有否定，或前后的谓语动词形式不一致时，用"It is the same with+主语"结构或用"Soit is with+主语"结构。

如：He worked hard,but didn't pass the exam.So it was with his sister.他很努力，但没有通过考试。他妹妹也是这样。（既有肯定又有否定）

She is a teacher and she enjoys teaching.So it is with MrLi.她是老师，热爱教书。李先生也是这样。（谓语一个是系动词，一个是行为动词）

"so.....that.....和"such..that.."结构

"so.....that.....和"such..that.."结构中的so或such位于句首时。

如：He was so excited that he could not say a word.

-So excited was he that he could not say a word.他如此激动以至于一句话都说不出来。

His anger was such that he lost control of himself.