先行词。引导目的状语。修饰

单句与复合句

从句与主句共同组成的句子被叫做复合句。按照从句与主句的关系，从句主要分为名词性从句，它在句子中起名词的作用即作主语，宾语；形容词性从句，它在句子中起形容词的作用，用来修饰名词，代词或全句；还有状语从句，它主要在句子中充当副词的作用，它有时间，地点，原因，条件，结果，目的，方式，比较，让步等状语从句。

1? 语法辨析

Incorrect: I won't tell you the name of the person who teach me English??
Correct: I won't tell you the name of the personwho teaches me English
? 定语从句又叫做形容词性从句，它在句中起修饰名词或全句的作用。它一般紧挨着他所修饰的名词出现，这个名词被叫做先行词。而引导定语从句的词有两种，其一关系代词： who， that (可指人或物)， which (只指物)， whom， whose；其二是关系副词：when， where， why。 当关系代词在定语从句中作主语时，它的数取决于它所修饰的先行词。

Incorrect: We talked about the things and the people who wemet during the Second World War?
Correct: We talked about the things and the people that we met during
the Second World War??
? 因此句定语从句修饰的是两个先行词，其一是 things 指物；其二是 people指人。关系代词中 who 指人， which指物，所以都不可能用。只能用 that 指人又指物。

Incorrect: The bike， that my father bought yesterday was stolen?
Correct: The bike， which my father bought yesterday was st