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非限定从句是英语语法中的一个重要部分,它可以用来添加额外的信息,丰富句子的内容。下面将介绍非限定从句的三个特征。
1. 非限定从句的位置
非限定从句一般位于句子的中间或者结尾,用逗号分隔开来。例如:
- My brother, who lives in New York, is a doctor.
- The book, which I read yesterday, was very interesting.
2. 非限定从句的语气
非限定从句的语气一般比较温和,不像定语从句那样强调句子的某个部分。非限定从句通常用来添加一些额外的信息,使句子更加丰富。例如:
- Tom, who is my best friend, is coming over tonight.
- The city, which I visited last year, was beautiful.
3. 非限定从句的引导词
非限定从句的引导词通常包括who, which, that等。但是,在非限定从句中,that通常不使用。例如:
- My friend, who is a teacher, is very knowledgeable.
- The car, which belongs to my neighbor, is parked in the driveway.
总之,非限定从句是英语语法中的一个重要部分,要掌握好非限定从句的三个特征,才能更好地理解和运用它们。