| 1. | I am unable to keep my engagement with you . 我不能和你们朝夕相处。 |
| 2. | I regret to say that i am unable to help you . 我很抱歉不能帮助你。 |
| 3. | You are unable to render me the least assistance . 你一点都不能帮我的忙。 |
| 4. | You are unable to remember real events . 真正发生的事你不记得。 |
| 5. | He was so angry as to be unable to say . 他愤怒得话都说不出了。 |
| 6. | The police were unable to clear up the mystery . 警察解释不了这个难解的迷。 |
| 7. | We are unable to subsist without air and water . 没有空气和水我们就活不下去。 |
| 8. | He had been unable to reveal what he was after . 他不能泄露他要调查的是什么。 |
| 9. | We are unable to subsist without air and water .. 没有空气和水我们就活不下去。 |
| 10. | He has been unable to help us . 他未能从经济上资助我们。 |