资源简介

Unit5动词不定式作目的状语讲练
2025-2026学年外研版英语（2024）八年级上册
动词不定式是一种非谓语动词，其形式为 "to + 动词原形"。除了作宾语和宾语补足语外，另一个重要功能是在句中充当状语，其中以目的状语最为常见。
一、 核心功能：作目的状语
1. 定义：动词不定式作目的状语，用来说明主语实施某一动作或采取某一状态的目的、意图或动机，意为“为了...”。
2. 位置：位置灵活，可置于句首或句尾。
置于句尾（最常见）：通常紧接在主句之后。
例句：She studies very hard to get good grades.
置于句首（表示强调）：用逗号与主句隔开，起到强调目的的作用。
例句：To protect the environment, we should reduce plastic use.
二、 基本结构
动词不定式作目的状语主要有以下三种常见结构：
1. to do sth （最常用、最简洁的表达）
例句：He got up early to catch the first bus.
2. in order to do sth （较正式，目的性更强）
例句：They are collecting data in order to support their theory.
3. so as to do sth （较正式，通常不用于句首）
例句：Please check your work carefully so as to avoid mistakes.
三、 用法辨析与拓展
1. 否定形式：
结构：in order not to do 或 so as not to do （"not to do" 也可表否定，但前两者更显强调）。
例句：He spoke quietly so as not to wake the baby.
2. 与不定式其他状语用法的区别：
目的状语：回答“为了什么？”（Why ）
例句：He went to the library to borrow a book. (Why did he go To borrow a book.)
原因状语：常放在表示喜怒哀乐的形容词（如 glad, sad, surprised, happy 等）之后，说明产生这种情绪的原因。
例句：I'm very glad to see you here.
结果状语：表示出乎意料或自然而然的结果，常与 only 连用，构成 "only to do"。
例句：He rushed to the station, only to find the train had left.
四、 总结与提醒
1. 动词不定式作目的状语是表达行为目的最直接有效的方式之一。
2. 掌握其三种基本结构：`to do`, `in order to do`, `so as to do`，并根据语体正式程度选择使用。
3. 注意其在句中的灵活位置，置于句首时起强调作用并需使用逗号。
4. 能够初步区分不定式作目的状语、原因状语和结果状语的不同语境和功能。
Unit 5 动词不定式作目的状语讲练 - 习题
一、用动词不定式（to do）完成句子，使其成为目的状语
1. He got up very early __________ (catch) the first bus.
2. My sister is studying very hard __________ (pass) the final exam.
3. We went to the supermarket __________ (buy) some fruits and vegetables.
4. She turned on the TV __________ (watch) the news.
5. They are raising money __________ (help) the children in poor areas.
6. I called him __________ (invite) him to my birthday party.
7. The little boy stood on a chair __________ (reach) the book on the shelf.
8. The team practiced every weekend __________ (win) the competition.
二、用 in order to 或 so as to 连接句子（注意大小写和标点）
1. He took a taxi. He wanted to arrive on time.
He took a taxi __________ __________ __________ on time.
2. She whispered. She didn't want to wake up the baby.
She whispered __________ __________ __________ wake up the baby.
3. I need to hurry. I want to catch the train.
I need to hurry __________ __________ __________ the train.
4. They built a high wall. They wanted to keep the wild animals out.
They built a high wall __________ __________ __________ the wild animals out.
5. Please speak louder. We want everyone to hear you clearly.
Please speak louder __________ __________ __________ hear you clearly.
6. He checked the map carefully. He didn't want to get lost.
He checked the map carefully __________ __________ __________ get lost.
7. We must protect the environment. We want to have a better future.
We must protect the environment __________ __________ __________ a better future.
8. She is learning French. She wants to work in Paris.
She is learning French __________ __________ __________ in Paris.
三、改写句子，将目的状语置于句首
1. Dylan trained hard to improve his basketball skills.
__________ __________ __________ __________ __________, Dylan trained hard.
2. I turned down the music not to disturb my neighbours.
__________ __________ __________ __________ __________, I turned down the music.
3. She goes to the library every week to borrow new books.
__________ __________ __________ __________ __________, she goes to the library every week.
4. We set out at dawn to avoid the heavy traffic.
__________ __________ __________ __________ __________, we set out at dawn.
5. He saved all his pocket money to buy a new guitar.
__________ __________ __________ __________ __________, he saved all his pocket money.
6. The company is developing new products to meet customers' needs.
__________ __________ __________ __________ __________, the company is developing new products.
7. You should take notes in class to remember the key points.
__________ __________ __________ __________ __________, you should take notes in class.
8. The government has made new laws to protect the environment.
__________ __________ __________ __________ __________, the government has made new laws.
四、单项选择
( ) 1. __________ get a good seat, we arrived at the cinema early.
A. So as to B. In order to C. To
( ) 2. She spoke slowly and clearly __________ make herself understood.
A. so as to B. to C. Both A and B are correct.
( ) 3. They took a shortcut __________ time.
A. saving B. to save C. save
( ) 4. He put on his glasses __________ see the words clearly.
A. for B. to C. so that
( ) 5. __________ not miss the flight, he left for the airport three hours early.
A. In order to B. So as to C. To
( ) 6. We use a calculator __________ complex calculations quickly.
A. do B. doing C. to do
( ) 7. I'm going to the post office __________ a parcel.
A. to send B. for sending C. send
( ) 8. She turned off her phone __________ be disturbed during the meeting.
A. so as not to B. to not C. not to
五、判断正误，正确的写(R)，错误的写(W)并改正
1. ( ) I went to the kitchen for getting a glass of water.
2. ( ) To learn more about history, he visits museums often.
3. ( ) She works hard in order to providing a better life for her family.
4. ( ) He ran quickly so as to catch the last bus.
5. ( ) We eat to live, not live to eat.
6. ( ) They brought a map for not get lost in the forest.
7. ( ) In order to see the sunrise, we climbed to the top of the mountain before dawn.
8. ( ) She studies English hard so that to go abroad.
六、汉译英
1. 为了保持健康，他每天都去跑步。
__________ __________ __________, he goes running every day.
2. 我写信是为了感谢你的帮助。
I am writing this letter __________ __________ __________ for your help.
3. 她悄悄地走进房间以免吵醒她的父母。
She walked quietly into the room __________ __________ __________ __________ her parents.
4. 我们努力学习是为了通过考试。
We study hard __________ __________ the exam.
5. 为了赶上早班车，我起得很早。
__________ __________ __________ the early bus, I got up very early.
6. 他戴上了帽子以保护自己免受阳光照射。
He put on a hat __________ __________ __________ __________ the sun.
7. 请大声点说话，以便每个人都能听见。
Please speak louder __________ __________ __________ __________ hear you.
8. 为了省钱，她决定自己在家做饭。
__________ __________, she decided to cook at home.
答案
一、用动词不定式（to do）完成句子
1. to catch
2. to pass
3. to buy
4. to watch
5. to help
6. to invite
7. to reach
8. to win
二、用 in order to 或 so as to 连接句子
1. in order to arrive / so as to arrive
2. so as not to / in order not to
3. in order to catch / so as to catch
4. in order to keep / so as to keep
5. in order for everyone to / so as for everyone to (或 so that everyone can)
6. so as not to / in order not to
7. in order to have / so as to have
8. in order to work / so as to work
三、改写句子，将目的状语置于句首
1. To improve his basketball skills
2. Not to disturb my neighbours
3. To borrow new books
4. To avoid the heavy traffic
5. To buy a new guitar
6. To meet customers' needs
7. To remember the key points
8. To protect the environment
四、单项选择
1. C (To) (置于句首常用To或In order to)
2. C (Both A and B are correct.)
3. B (to save)
4. B (to)
5. C (To) (置于句首)
6. C (to do)
7. A (to send)
8. A (so as not to)
五、判断正误并改正
1. (W) 改正：I went to the kitchen to get a glass of water.
2. (R)
3. (W) 改正：She works hard in order to provide a better life for her family.
4. (R)
5. (R)
6. (W) 改正：They brought a map so as not to get lost in the forest. / ...not to get lost...
7. (R)
8. (W) 改正：She studies English hard in order to go abroad. / ...to go abroad.
六、汉译英
1. To keep healthy / In order to keep healthy
2. to thank you
3. so as not to wake / in order not to wake
4. to pass
5. To catch
6. to protect himself from
7. so that everyone can / in order for everyone to
8. To save money

展开更多......

收起↑