从句是什么
什么是从句
从句是构成复杂句的基本单位,它是由一组词组成,包含一个限定动词,但不能独立成句。从句在长句中充当名词、副词或形容词的角色,或者包含从属于它的一个或多个从句。
1. 主语从句
主语从句在句子中充当主语的角色,可以直接位于句子的主语位置。如果从句较长,谓语又较短,可以用it作形式主语,并将从句放在句末。
例子:
It is a fact that China is not what it used to be.(表语从句)
Is there any proof that the food of plants differs from that of animals?(同位语从句)
The rumor seems as if it is true.(表语从句)
2. 宾语从句
宾语从句在句子中充当动词的宾语,回答了“谁/什么”来完成句子的意义,宾语从句通常出现在及物动词、介词后面。
例子:
I know that he is coming tomorrow.(宾语从句)
She asked me where I was going.(宾语从句)
Do you remember if he called you?(宾语从句)
3. 表语从句
表语从句在句子中充当表语的角色,用来描述主语或宾语的特征、状态、性质等。
例子:
It is a coincidence that we met here again.(表语从句)
My opinion is that we should take action immediately.(表语从句)
The truth is that I didn't know about the plan.(表语从句)
4. 定语从句
定语从句在句子中充当定语的角色,修饰名词或代词,用来限定或描述名词或代词的性质、特征等。
例子:
The book that I'm reading is very interesting.(定语从句)
This is the house where I used to live.(定语从句)
She is the girl whose father is a famous actor.(定语从句)
5. 状语从句
状语从句在句子中充当状语的角色,修饰动词、形容词、副词等,用来说明时间、地点、原因、结果、条件等。
例子:
I will go to the park when it stops raining.(时间状语从句)
She sings as if she were an angel.(方式状语从句)
You can have dessert after you finish your dinner.(条件状语从句)
从句是由一组词组成的句子,它在复杂句中充当不同的角色,承担不同的句子成分。常见的从句包括主语从句、宾语从句、表语从句、定语从句和状语从句。通过理解和掌握不同类型的从句,我们可以更准确地表达自己的意思,丰富语言表达。