语法是考试的核心考点，掌握以下高频语法点能显著提升答题效率

摘要：时态判断是基础能力。过去完成时"had done"常用于"by+过去时间"的结构，如By the time I arrived, the movie had ended. 现在完成进行时"have been doing"强调动作的持续性，如She has be

语法是语言考试的核心考点，掌握以下高频语法点能显著提升答题效率。

时态判断是基础能力。过去完成时"had done"常用于"by+过去时间"的结构，如By the time I arrived, the movie had ended. 现在完成进行时"have been doing"强调动作的持续性，如She has been waiting for two hours.

非谓语动词是重点难点。不定式作目的状语时，如To pass the exam, he studied hard. 动名词作主语，如Swimming is my favorite sport. 分词作定语，如The boy standing there is my brother.

三大从句是必考点。定语从句中关系词的选择要看先行词在从句中的成分，如This is the book that I bought yesterday. 名词性从句注意语序和连接词，如I don't know when he will come. 状语从句需注意时态呼应，如If it rains tomorrow, we will stay at home.

虚拟语气需牢记特殊结构。与现在事实相反用"if+过去式，would do"，如If I were you, I would go. 与过去事实相反用"if+had done, would have done"，如If you had told me earlier, I would have helped.

主谓一致要注意细节。集合名词如family作整体用单数，指成员用复数；就近原则如There is a book and two pens on the desk.

掌握这些语法规律后，建议通过真题练习强化应用，培养对标志性时间状语和连接词的敏感度。语法的本质是语言规律的总结，理解后能举一反三十倍提升应试能力。