动词不定式作目的状语讲义 2025-2026学年人教版（2012）英语九年级全册
人教版九年级英语动词不定式作目的状语 讲解及练习
动词不定式作目的状语核心语法点讲解
一、定义
动词不定式（to + 动词原形）作目的状语时，用于说明主句动作发生的目的，即“为了……”。
二、基本结构与位置
1.句尾位置（最常用）：主句 + to do
例：He gets up early to catch the first bus.
2.句首位置（强调目的，常用逗号隔开）：To do, + 主句
例：To improve his English, he reads English every morning.
三、常用扩展结构
①in order to do：可置于句首或句尾，语气比 to do 稍强，同样表目的。
例：She studies hard in order to pass the exam. / In order to save time, we take the subway.
②so as to do：只能置于句尾，不能放在句首。
例：They speak loudly so as to be heard clearly.
四、否定形式
不定式的否定形式为 not to do，对应的扩展结构否定形式是 in order not to do / so as not to do。
例：She kept quiet not to wake up the baby. / He walked slowly in order not to fall down.
五、注意事项
①不定式作目的状语时，其逻辑主语通常与主句主语一致。
例：We come here to learn English.（to learn 的逻辑主语是 we）
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②若目的状语的逻辑主语与主句主语不一致，需用 for sb. to do 结构。
例：The teacher opened the window for the students to breathe fresh air.
一、选择填空
（ ）1. We should study hard ______ get good grades.
A. in order B. to C. so that D. such that
（ ）2. ______ catch the early bus, he got up at 5 o’clock.
A. To B. In order C. So as D. So that
（ ）3. She speaks slowly ______ we can understand her.
A. to B. in order to C. so as to D. so that
（ ）4. They are working hard ______ earn more money.
A. so as B. in order to C. in order D. so that
（ ）5. He kept quiet ______ not to wake up the sleeping baby.
A. in order B. in order to C. get D. so that
（ ）6. ______ not to miss the train, we set off early.
A. In order to B. To C. In order D. So as to
（ ）7. The teacher speaks loudly ______ the students can hear her clearly.
A. to B. in order to C. so as to D. so that
（ ）8. We go to the library ______ borrow books.
A. to B. so that C. such that D. in order
（ ）9. She took a taxi ______ she could arrive on time.
A. to B. in order to C. so as to D. so that
（ ）10. ______ improve his spoken English, he practices every day.
A. So as to B. In order to C. In order D. So that
（ ）11. They turned down the music ______ not to disturb the neighbors.
A. so as to B. in order to C. to D. so that
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（ ）12. I need a pen ______ write a letter.
A. to B. so that C. such that D. for
（ ）13. ______ finish the work on time, we asked for help.
A. So as to B. In order to C. To D. B and C
（ ）14. He opened the door ______ let the fresh air in.
A. so that B. in order to C. in order D. such that
（ ）15. We should plant more trees ______ protect the environment.
A. to B. so that C. such that D. for
（ ）16. She studies late at night ______ pass the final exam.
A. in order to B. so that C. such that D. for
（ ）17. ______ get there on time, we have to leave now.
A. To B. So as to C. In order to D. All of the above
（ ）18. They saved money ______ buy a new house.
A. to B. so that C. such that D. in order
（ ）19. The girl stood up ______ see the blackboard clearly.
A. to B. so that C. such that D. for
（ ）20. He closed the door quietly ______ not to wake his parents.
A. so as to B. in order to C. to D. A, B and C
二、翻译句子（补全横线部分）
- 我来这儿是为了学习英语。
I come here _________________________ English.
- 为了赶上火车，我们早早出发了。
_________________________ the train, we set off early.
- 她努力学习是为了通过考试。
She studies hard _________________________ the exam.
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