定义

状语从句是一个从句，用来修饰主句中的动词、形容词、副词等成分，表示时间、条件、原因、目的、结果、让步、比较等关系。状语从句通常由从属连词引导，连接主句和从句。

分类

下面我们来看看状语从句的分类：

时间状语从句
时间状语从句用来表示主句中的动作发生的时间，通常由when, while, as, before, after, since, until等从属连词引导。
例如：

• She was watching TV when I arrived.
• I always listen to music while I’m cooking.
• As I was walking down the street, I saw an old friend.
• Before I go to bed, I like to read for a little while.

条件状语从句
条件状语从句用来表示主句中的动作发生的条件，通常由if, unless, provided that等从属连词引导。
例如：

• If it rains tomorrow, we’ll stay inside.
• Unless you study hard, you won’t pass the exam.
• Provided that you finish your work, you can leave early.

原因状语从句
原因状语从句用来表示主句中的动作发生的原因，通常由because, since, as, now that等从属连词引导。
例如：

• I didn’t go to the party because I was feeling sick.
• Since it’s raining outside, we’ll stay in.
• Now that you’re here, let’s get started.

目的状语从句
目的状语从句用来表示主句中的动作的目的，通常由so that, in order that等从属连词引导。
例如：

• I’m studying hard so that I can pass the exam.
• We need to save money in order that we can buy a new car.

1. 结果状语从句
   结果状语从句用来表示主句中的动作的结果，通常由so that, such that, so…that等从属连词引导。
   例如：

• The rain was so heavy that we couldn’t go outside.
• He was such a good teacher that we all learned a lot.

让步状语从句
让步状语从句用来表示主句中的动作虽然有困难但还是要做，通常由although, even though, though等从属连词引导。
例如：

• Although it was raining, we still went for a walk.
• Even though he’s busy, he always makes time for his family.

比较状语从句
比较状语从句用来表示主句中的动作与从句中的动作进行比较，通常由as…as, than等从属连词引导。
例如：

• She’s not as tall as her sister.
• He runs faster than I do.

最后，让我们来看看一些例句：

• When I was young, I used to play soccer every day.
• If you don’t have a ticket, you can’t get in.
• Because it’s Sunday, the stores are closed.
• So that we don’t get lost, let’s bring a map.
• The traffic was so bad that we were late for the meeting.
• Although it’s cold outside, I’m not wearing a coat.
• She sings as beautifully as a bird.

希望这些例句能够帮助大家更好地理解状语从句的用法。

Mindmap解析

习题-Exercises

1. ___________ I finish my homework, I can watch TV.
   A. Unless
   B. Because
   C. After
   D. While
2. ___________ he was sleeping, the phone rang.
   A. When
   B. If
   C. So that
   D. As though
3. ___________ you study hard, you will pass the exam.
   A. As if
   B. Although
   C. Provided that
   D. Such that
4. ___________ we get lost, we can use the map.
   A. In case
   B. Until
   C. Since
   D. So that
5. ___________ he’s busy, he always finds time for his family.
   A. Even though
   B. Unless
   C. Before
   D. As long as
6. ___________ it rains tomorrow, we’ll stay inside.
   A. Unless
   B. Before
   C. Because
   D. If
7. ___________ she’s sick, she still went to work.
   A. Although
   B. As though
   C. Until
   D. So that
8. ___________ he’s not feeling well, he still went to the party.
   A. Although
   B. In case
   C. Since
   D. As if
9. ___________ we were lost, we kept walking.
   A. Even though
   B. Before
   C. Provided that
   D. As though
10. ___________ she’s on a diet, she still eats junk food.
    A. Although
    B. In case
    C. Until
    D. So that

答案：

1. C
2. A
3. C
4. A
5. A
6. D
7. A
8. A
9. A
10. A