| 句型类别 | 结构特征 | 典型例句 |
|---|---|---|
| 主谓结构 | S+V | My plan has changed. |
| 主系表结构 | S+V+P | The future is looking good. |
| 双宾语结构 | S+V+IO+DO | He bought me a book. |
英语长难句主要呈现三种形态：包含连词的并列结构、嵌套从句的复合句式以及特殊语序的表达方式。对于考生来说，掌握这些句式的拆解方法至关重要。
强调结构与虚拟语气在考研真题中频繁出现，这些特殊句式往往成为解题关键。通过典型例句可以更好理解其使用规律：
倒装结构：Under no circumstances should we neglect the importance of practice.
虚拟语气：Had I known the truth earlier, I would have made different decisions.
面对复杂长句时，建议采用三步分析法：首先定位谓语动词，其次划分句子主干，最后解析修饰成分。这种方法能有效提升句子拆解效率。
例句解析：
What the police want to know is when you entered the room.
▶ 主干结构：...is...（主系表）
▶ 主语从句：What the police want to know
▶ 表语从句：when you entered the room
