1.only doing sth.放在句尾，表示方式、状况或结果，only 表示强调。
She died，only leaving nothing but debts. 她死了，只留下一身债。
He started off in a hurry，only leaving a lot of work undone. 他匆忙走了，留下许多工作未做。
2.only to do sth.放在句尾，作结果状语，表示没有预料的结果，有时含有某种感情色彩。
The thief ran into the wood only to be caught by a passerby. 小偷跑进了树林，想不到被一个过路人抓住了。
He went to see her only to find her out. 他去看她，不料发现她出去了。
She started with the aim of doing harm to others only to end up by ruining herself. 她以损人开始而以害己告终。
He made a long speech only to show his ignorance of the subject. 他作了长篇大论的发言，结果暴露了他对这个学科的无知。
New forests grew only to be covered by sand，mud and water again. 新的森林长起来了，结果又被泥沙和水覆盖了。
