"on"的对应词是 under。例如：
1. There would be no new taxes underhis leadership（在他主政期间不会增加新税种）。
2. They said he'd been held underthe water（他们说他在水下被关押）。
3. The book is onthe table（书在桌子上）。
4. The tree underwhich we used to take shelter has been cut down（我们过去常去避雨的树被砍倒了）。