掌握句子成分的精准运用是雅思写作与阅读提分的关键所在。现代英语语法体系将句子构成划分为九大要素，这些要素的灵活组合构成了丰富的语言表达形式。
| 成分类型 | 语法功能 | 典型结构 |
|---|---|---|
| 主语 | 句子动作执行者 | 名词/从句/动名词 |
| 谓语 | 核心动作描述 | 动词/系表结构 |
名词主语：Global warming has become a pressing environmental issue.
动名词结构：Balancing work and study requires effective time management.
在雅思写作实践中，建议考生采用复合主语结构提升句式复杂度。例如将简单名词主语转换为从句形式：Whether governments should invest more in public transportation remains a controversial topic.
阅读部分需重点识别同位语成分，如：The fact that renewable energy sources are environmentally friendly is widely acknowledged.
