2．否定副词never，nor，not，hardly，little，seldom，scarcely，rarely及表否定意义的介词短语at no time，under/in no circumstances，in no case，by no means，on no condition等置于句首时。

　　Never before have I seen such a moving film.＝I have never seen such a moving film before.

　　以前我从未看过这么感人的电影。

　　Not a single mistake did he make.＝He didn't make a single mistake.

　　他一个错误也没犯。

　　3．hardly...when...，no sooner...than...，not only...but also...等引导两个分句时，前一个分句用部分倒装，后一个分句不变。但当neither...nor...引导两个分句时，两个分句都要部分倒装。

　　Hardly had he begun to speak when his father stopped him.

　　他刚一开始说话他父亲就制止了他。

　　4．so/neither/nor置于句首，意为"也(不)"，表示前面所说的情况也适用于另一个人或事物时，要用部分倒装，其句型为：so/neither/nor＋be动词/助动词/情态动词＋主语......。so与前面的肯定句呼应，neither，nor与前面的否定句相呼应。

　　They love having lots of friends, so do those with disabilities.

　　他们喜欢拥有许多朋友，残疾人也是如此。

　　I don't know who he is, nor do I want to know.

　　我不知道他是谁，我也不想知道。

　　注意：so表示"是的，确实"重复上文，表示赞同对方的观点时，主谓语不倒装。

　　-It is too hot.

　　--天太热了。

　　-So it is.

　　--是啊，的确很热。

　　5．在so/such...that...句式中，如果so/such引导的部分位于句首时，主句中的主语和谓语需要部分倒装，如谓语为be的一般现在式或一般过去式，则完全倒装。

　　So dark was it that he couldn't see the faces of his companions.

　　天这么黑，他看不见同伴的脸。

　　So loudly did he speak that even the people in the next room could hear him.

　　他说话声音如此大以至于隔壁的人都能听见。

6．以as引导的让步状语从句，其表语应提到句首，其余部分不变。如果从句的表语