从句（Clause）是复合句的重要组成部分。初中阶段主要学习宾语从句、状语从句和定语从句。掌握各类从句的引导词、语序、时态等是中考的重点和难点。
宾语从句：在句中作宾语
- 引导词：that, if/whether, 特殊疑问词
- 语序：陈述语序
- 时态：主现从任意，主过从过去，真理现在时
状语从句：在句中作状语
- 时间：when, while, before, after, until, as soon as, since
- 条件：if, unless
- 原因：because, since, as
- 让步：though/although
- 结果：so...that
- 主将从现：时间、条件从句用现在时表将来
定语从句（初步了解）：在句中修饰名词
- 引导词：who（人）, which（物）, that（人或物）
常见错误：
- 宾语从句语序错误
- because和so不能同用
- although和but不能同用
- 时间、条件从句中will的错用
I know (that) he is right.
I will call you when I arrive.
If it rains, we will stay home.
I stayed home because it rained.
宾语从句三要素记忆口诀：
引导词：陈述that，疑问if/whether或疑问词
语序：永远陈述语序
时态：主现从任意，主过从过去，真理永现在
状语从句关键：
主将从现（时间、条件从句）
连词不能混用（because/so, although/but）
从句辨析：
宾语从句→作宾语
状语从句→作状语（修饰动词）
定语从句→作定语（修饰名词）
将下列句子合并为含有宾语从句的复合句： 1. Where does he live? I don't know. 2. Will it rain tomorrow? I wonder. 3. The earth goes around the sun. The teacher told us.
确定引导词和语序
💬 1. I don't know where he lives. (特殊疑问词，陈述语序) 2. I wonder if/whether it will rain tomorrow. (一般疑问句用if/whether) 3. The teacher told us (that) the earth goes around the sun. (客观真理用一般现在时)
1. I don't know where he lives. 2. I wonder if/whether it will rain tomorrow. 3. The teacher told us (that) the earth goes around the sun.
通过游戏全面掌握各类从句的用法
I don't know ___.
I will go to the park if it ___ tomorrow.
___ he is very busy, ___ he still helps others.
The teacher told us that the earth ___ around the sun.
用适当的连词填空： 1. I wonder ___ he will come to the party. 2. I will call you ___ I arrive home. 3. He didn't go to school ___ he was ill. 4. ___ it was late, we kept on working.
综合练习：用括号内动词的适当形式填空，并说明从句类型： 1. I think (that) he ___ (be) a good student. 2. If you ___ (work) hard, you will succeed. 3. I have known him since I ___ (come) here. 4. Can you tell me where he ___ (live)? 5. Although he ___ (be) poor, he is happy. 6. The teacher said that light ___ (travel) faster than sound.