以下是整理的《不定式分句怎么用？》，一起來看看吧！
不定式分句可以在句子中作主語和主語補語、賓語和賓語補語、狀語等。具體而言：
1. 作主語和主語補語：
To finish the work is very easy.
完成這項工作很容易。（=It is very easy to finish the work.）
Last year, the wisest policy was not to interfere any more.去年最明智的政策就是不再干預(yù)。
2. 作賓語和賓語補語：
I learned to speak English when I was young. 我小時候就學(xué)習(xí)說英語了。
The teacher’s greatest wish is to see his student pass the final exam.這個老師的心愿就是看到學(xué)生們通過期末考試。
My teacher advised me to study abroad for further education.老師建議我留學(xué)深造。
3. 作狀語：
（1）表目的：
She opened the window to get more fresh air. 她打開窗戶呼吸更多新鮮空氣。
（2）表結(jié)果：
He hurried to the station only to be told that the train had left.
他匆忙趕到車站，結(jié)果火車已經(jīng)走了。
（3）表原因：
I was really lucky to pass the final exam. 能通過考試，我真的很幸運。
I am sorry to hear that news. 聽到這則消息，我感到很抱歉。