| 词组 | turn on/upon |
| 释义 | turn on/upon ! Turn upon is more formal than turn on and is mostly used in writing. 1. turn on/upon sb not passive to suddenly attack someone, either physically or with unpleasant words, especially when it is very unexpected: ▪ We watched in horror as the dog turned on the little girl. ▪ Peter turned on Rae, screaming, "Get out of my sight!" ■ SIMILAR TO: ↑round on/upon BrE 2. turn on/upon sth to depend on something in order to be successful or work well: ▪ The whole future of the company turns on the success of this one product. ▪ Whether we win the case or not turns on the exact terms of your contract. ■ SIMILAR TO: ↑depend on/upon, ↑hinge on/upon BrE 3. turn sth on/upon sb to suddenly aim something such as a gun, a light, or an angry look at someone: ▪ The police officer turned his torch on the back of the house. ▪ I was terrified she would turn the gun on me. ■ SIMILAR TO: ↑train on/upon 4. turn on/upon sth BrE formal if your thoughts or a conversation turns on a particular subject, you think about or discuss that subject: ▪ Stephen wasn't listening to the others - his thoughts turned on the journey in front of him. ■ SIMILAR TO: ↑turn to |
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