| 1. | When will the new coins be put into circulation ?
新硬币何时发行？ |
| 2. | Never have we seen such a niggard like him !
象他这样的小气鬼我们何时见过？ |
| 3. | Please do the work at your own convenience .
这工作如何做，何时做，悉听尊便。 |
| 4. | How do you tell when to change gear ?
你怎么确定何时换挡？ |
| 5. | It is impossible to estimate when this time will come .
无法预计这一天何时到来。 |
| 6. | When is her new novel coming out ?
她的新小说何时问世？ |
| 7. | He was a nervous man, easily depressed .
他是一个神经质的人，不知何时就难过起来。 |
| 8. | Firms do not know when consumer tastes will change .
厂商不知道消费者的爱好在何时变动。 |
| 9. | You are welcome any time .
无论何时，你都受欢迎。 |
| 10. | When do you get your next step up ?
你何时晋级？ |
