关于“一…就…”的倒装句，综合权威信息整理如下：

一、基本结构与用法

常用结构

- 完全倒装：

$$\text{时间状语/副词} + 助动词/情态动词 + 主语$$

例如：

- Hardly had she finished her homework when the phone rang.

- No sooner did the meeting start than everyone arrived.

- 部分倒装：

- 否定词+助动词/情态动词+主语

例如：

- Never have I seen such a beautiful sunset.

- Seldom do I finish my tasks on time.

- 其他副词：

例如：

- Directly after the meeting, we started the project.

固定搭配

- as soon as：

最常用表达，引导时间状语从句，无需倒装。 例如：

- The letter arrived as soon as we called the post office.

- He got married as soon as he left university.

二、注意事项

否定词位置

- 否定副词（如never, seldom, hardly）需置于句首，且仅其后的部分倒装。 - 例如：

- Hardly had the meeting started when the power went out.

特殊结构

- hardly…when…：

- 表示“一…就…”，需用部分倒装。 - 例如：

- The problem was solved hardly when we reached the root cause.

- no sooner…than…：

- 与hardly…when…结构相同，需部分倒装。 - 例如：

- No sooner had the letter arrived than I started reading it.

常见误区

- 部分人误将"as soon as"后的从句也倒装，但实际无需倒装。 - 例如：

- 正确：He called the doctor as soon as he felt unwell.

- 错误：He called the doctor the as soon as he felt unwell.

三、补充说明

其他表达：

Directly…（如：He started the meeting directly after the meeting.）

On no account（如：We will not postpone the meeting on no account.）

主语要求：

部分倒装时，主语必须为名词或代词，若为主语从句需使用完全倒装。

通过以上结构与注意事项，可灵活运用“一…就…”的倒装句型，提升英语表达的准确性与流畅性。