I can't find my key, I think I have lost it.
我找不到钥匙了,我想我已经把它丢了。
I have been working here for seven years.
我已经在此工作七年了。
第二个,第一个手误少了ing
I can't find my key, I think I have lost it.
我找不到钥匙了,我想我已经把它丢了。
I have worked here for seven years.
我已经在此工作七年了。
不好意思,第二句写成现在完成进行时了。要改为have worked
2. He has worked here for ten years.( 过去的动作一直延续到现在)
他在这儿工作已经十年了。