I got bad gas from something I had eaten.
那天我吃坏了肚子。
He had eaten no food that day. He began to want food.
他开始回家，那天他没有吃东西。
He had eaten something cold, which made him throw up.
他吃了些凉东西，这使得他呕吐起来。
The sea had eaten away much of the shore.
海水侵蚀了大片海岸。
I had eaten the apple when I went out to play.
出去玩之前我已经吃了苹果。
He had eaten nothing since the night before;
从昨夜起，他还一直没有吃东西。