1. He has turned off the light. 他已把灯关了.
2. Have you found your pen yet?你已找到你的钢笔了吗?
3. He has lived here since 1978.自从1978年以来,他一直住在这儿.
4. I have been in the army for more than 5 years.我在部队已经呆了五年多了.
5. I have heard nothing from him up to now.到目前为止我没有他的任何消息.
6. He has been in the League for three years.= It is three years since he joined the League. 他入团已三年了.
7. The train has arrived. 火车到了.
8. Have you joined the computer group? 你加入电脑小组了吗?
9. Jill has bought a new computer.吉尔买了一台新电脑.
10. I have just turned off the light. 我刚刚把灯关上.
11. She has lost her bike. 她把自行车丢了.
12. We have had much snow this winter. 今年冬天多雪.
13. She has taught in the school for ten years. 她在这所学校教书已经10年了.
14. I haven't eaten anything since breakfast. 我从早饭起就一直没有吃东西.