发誓戒除；放弃

shorn off───剪掉

swore off───发誓戒除；放弃

worn off───磨损（worn是wear的过去分词）；逐渐消失（worn是wear的过去分词）

shown off───炫耀，卖弄（showoff的过去分词形式）

sworn out───由宣誓而得到

torn off───撕破

warn off───告诫…离开

wore off───磨损；逐渐消逝

work off───售出；清理，排除；渐渐地清除；冒充

Since his illness, he has sworn off drinking.───生病之后，他已发誓戒酒。

He's sworn off smoking cigarettes for a month.───他发誓戒烟已有一月之久了。

I have sworn off cigarettes altogether.───我已发誓完全地戒除烟。

To grow, GE has sworn off major acquisitions and instead is trying to find small companies that can extend its existing businesses.───为了实现增长，通用电气下决心停止大规模并购，而是试图发现可促进其现有业务增长的小公司。

Now, the farmer's son, truth be told, had dabbled in this kind of potion before, but he knew it was wrong and had sworn off it.───现在，农夫的儿子已经染上了这种药水，终于如梦初醒，他知道这是不对的，想要痛改前非。

Since that point, I have sworn off singing during the day.───从那以后，我白天再也没有唱过歌了。

It's incredible that he has sworn off smoking.───他已立誓戒烟，真是令人难以置信。

They are the traditional white grapes of Hermitage, though some growers have sworn off the notoriously fickle roussanne.