ARTICLE · 984867
初中英语语法(八)表语从句
中考:表语从句考得不多,多见于阅读、完形;重点会识别,分清和宾语从句区别。
表语从句:放在系动词后面,充当表语的句子。
一、什么是系动词
常见系动词:
be (am/is/are/was/were), seem, become, get, turn 等
简单句:This is a fact.(a fact 名词作表语)
表语从句:This is what he said.(完整句子作表语,表语从句)
二、引导词
1. that 引导
that 无词义,表语从句中that不能省略
结构:主语 + 系动词 + that从句
- My hope is that we can pass the exam.
我的希望是我们能够通过考试。
2. whether 引导(是否)
⚠️表语从句只能用 whether,不能用 if
- The problem is whether we have enough time.
问题是我们是否有足够的时间。
3. 特殊疑问词 what / who / when / where / why / how
保留疑问词含义,从句使用陈述语序
- This is why he was late.
这就是他迟到的原因。
- The question is where we should go.
问题是我们该去哪里。
- That is what I want.
那就是我想要的。
三、高频常考句型(初中务必记住)
1. This is why… 这就是……的原因
He got up late. This is why he missed the bus.
他起晚了,这就是他错过公交车的原因。
2. This is because… 这是因为……
He missed the bus. This is because he got up late.
他错过了公交车,这是因为他起晚了。
✨易混区分:
- This is why + 结果(这就是……的结果)
- This is because + 原因(这是因为……)
四、三大从句快速辨别(主语 / 宾语 / 表语从句)
1. 主语从句:从句在句子最前面,或者 It … that(作主语)
What he did is right.
2. 宾语从句:从句放在实义动词 / 介词后面
I know what he did.
3. 表语从句:从句放在系动词(be/seem/become)的后面
This is what he did.
五、小练习题
1. The trouble is ____ we don’t know his address.(是否)
2. My dream is ____ I can be an English teacher.
3. He was ill. That is ____ he didn’t come to school.(why / because)
参考答案
1. whether 2. that 3. why