一般而言，部分倒装句的基本结构为助动词＋主语，其中助动词可以是多种形式，最为常见的有助动词" do / does "、" have / has "、" be "、" can / could "等形式。以" do / does "为例，可以出现常见句型如： Do you like music ?"," Does sheunderstand ?",

助动词" be "的倒装有种种变形，其中以" There be "构成的倒装句最为常见，用法如：" There are many students in the classroom ."。如果句子是表示某个地方存在某物时，可以将" there "替换为" here "或者" where "等。

助动词" have / has "也可以构成倒装句，通常用法为 have / has +过去分词。例如：" Have you ever been to America ?"," Has she ever seen the film ?".

助动词" can / could "也能构成倒装句，使用 can / could ＋主语，

句式为：" Can you speak English ?"," Could I help you ?"。

此外，在部分倒装句中，也可以发现一些不常见助动词，如" may / might "." shall / should "." will / would "" must ". May I come in ?"," Should he come tomorrow ?"," Would you please help.