had found是什麼時態

Once he had found his feet he was able to deal with any problem.

他一旦變得自信了就能夠處理任何問題。

He had found a drum of electric cable.

他發現了一卷電纜。

Her father had found an outlet for his ambition in his work.

她父親在工作中找到了施展抱負的`機會。

Officers had found a large bread knife on the rubbish tip

警察在垃圾場發現了一把很大的麪包刀。

Isaac had found the work unendurable and walked out of the job

艾薩克覺得這份工作實在令人難以忍受，就辭職走人了。