| 1. | I used to travel by air a great deal when i was a boy .
当我还是个孩子时，我经常乘飞机旅行。 |
| 2. | Travel by air is now much more frequent than before
今天，乘搭飞机越来越普遍。 |
| 3. | Two hundred years ago people could not travel by air
二百年前人们无法在空中旅行。 |
| 4. | We couldn ' t induce the old lady to travel by air
我们无法劝服那老太太乘飞机旅行。 |
| 5. | Travel by air is now much more frequent than before
空中旅行已较以前普遍。 |
| 6. | A further complication was his refusal to travel by air
更麻烦的是他不肯坐飞机旅行。 |
| 7. | We couldn ' t induce the old lady to travel by air
我们无法劝服那位老太太乘坐飞机旅行。 |
| 8. | I ' m sure many people like to travel by air
我相信许多人喜欢坐火车旅行 |
| 9. | A further complication was fred ' s refusal to travel by air
更麻烦的是弗雷德不肯坐飞机 |
| 10. | We couldn ' t induce the old lady to travel by air
我们无法说服那位老太太乘坐飞机旅行。 |
