過去完成式 (Past Perfect Tense)
The boy was hungry; he had not eaten for 8 hours.
The plane had already taken off when I arrived at the airport.
I had never cooked before I went to college.
I had already done my homework when he came to visit .
When we arrived, the band _______ playing.
(A) just finished (B) had been finished (C) has just finished (D) had just finished
If I had studied harder, I would have passed the exam.
If Jason had had the money, he would have bought a Ferrari.
She asked if I had read The Lord of the Rings.
帶有副詞 ever, never, still, just, already, yet 等的句子，通常需要用現在完成式或過去完成式。
I had never heard that before.
Nicole said she had already read this novel.
- Her parents said she left already.
- Her parents said she had left already.