英语语法中如何判断从句的类型

判断从句类型的方法如下：

1. 主语从句：从句作主语，通常用what, who, whoever, whom, whomever, whoever, which, whichever, that等引导，而且主语从句一般在句首。

例句：What you said is right.

2. 宾语从句：从句作宾语，通常用that, whether, if, who, whom, whose, what, which等引导，而且宾语从句一般在动词后面。

例句：I don't know whether he will come or not.

3. 表语从句：从句作表语，通常用that, whether, who, whom, whose, what, which等引导，而且表语从句一般在be动词后面。

例句：The problem is whether we should go or not.

4. 定语从句：从句作定语，通常用who, whom, whose, which, that等引导，修饰名词或代词。

例句：The man who is smoking is my uncle.

5. 状语从句：从句作状语，通常用if, when, while, although, because, since, as, unless等引导，修饰整个句子或谓语动词。

例句：Although it was raining, we still went out.