If I want to use Past Perfect, are my sentences grammatically correct?
- I hadn't finished my meal.
- Anthony hadn't had a day off for months.
- They had not eaten for five hours.
- I had just eaten.
- Where had she gone?
- We were too late. The train had left.
As far I know there should be two incidents in the past to use Past Perfect.
Note: Those sentences are collected from an educational website.