现在完成时句子大全

1. I’ve just lost my keys.我刚丢了钥匙。

2. Since when have you planted so many young trees?从什么时候开始你种植了这么多小树的？

3. I have read the novel.我看过这部小说了。

4. They have gone out.他们已经出去了。

5. I have bad news. I have lost my job.有坏消息，我丢了工作了。

6. This is the first time I have been here.这是我第一次到这儿。

7. They haven’t finished yet.他们还没结束。

8. How many times have you been to Singapore?你去过新加坡几次？

9. My momhas never travelled by air.我妈妈旅游从来没有坐过飞机。

10. I've been doing my homework.我一直在做作业。