[小学英语教学论文] 定语从句是中学阶段的语法重点，也是历年高考的热点。为了帮助学生掌握定语从句的用法，提高综合运用英语的能力，笔者特作一下整理归纳和讲解，以期读者注意以下问题。
I.主语和谓语一致
1、关系代词在定语从句中主语，其谓语动词与先行词保持一致。例如：
The boy who is standing at the door is my son.
2、在one of the +复数名词+定语从句”结构中，复数名词是先行词，关系代词在定语从句中作主语，其谓语动词用复数形式。例如：
This is one of the best books that have ever been written on the subject.
3、在“the only one of the +复数名词+定语从句”结构中，one 是先行词，关系代词在定语从句中作主语，其谓语动词用单数。例如：
This is the only one of the best books that has ever been written on the subject.
II.关系代词的省略
在限制性定语从句中，关系代词在定语从句中作主语时不能省略；作宾语时在口语中可以省略。在非限制性定语从句中，关系代词不能省略。例如：
A plane is a machine that can fly.
The finger (that )I put into my mouth was not the one (that)I had dipped into the cup.
Abraham Lincoln, who led the United States through these years, was shot on April 14,1865.
His mother, whom he loved dearly, died in 1818.
III. 正确使用that 和which
1、that 指物，有时也可以指人,which 指物，不能指人。Wh……
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