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可以用 to + 不定式和 for + 名词来表达某个行为的目的或是做某件事的原因。

to + 不定式

I went to the library to get some books. 我去图书馆取了些书。
He studied hard to pass the exam. 他努力学习以通过考试。

for + 名词

We go to the hospital for a check-up. 我们为了检查去医院。
I worked part-time jobs for the money. 我为了钱做兼职。

比较 to 和 for:

I went to the office to get some documents.我去办公室拿了一些文件。

I went to the office for some documents.我为了一些文件去办公室。

for + -ing 的用法

当表达做某个行为的目的或是做某件事的原因不能用 for + -ing

I refused for looking at the result. (X)
I refused to look at the result. (✓)

Get on your bike for going to the store. (X)
Get on your bike to go to the store. (✓)

用 for + ing 表达某件事的目标或作用,或是某个物品的用途。

This headphone is used for listening to music. 这个耳机是用来听音乐的。
This is a high-performance computer for playing games. 这是一款用于玩游戏的高性能计算机。

to , for – 练习题

1. She came to the school find her son.

2. This computer is used working on the project.

3. Do you have time a quick call?

4. I need a paper the upcoming test.

5. I need a paper take the test.

6. This box is used storing things.

7. Where can I stay call some help?

8. I need go to work early for a meeting.

9. You have to inform your students a test.

10. I wake up early play my new guitar.





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