这样翻译的对吗,如有问题请指正1 在我昨天晚上吃饭以前,曾和李先生见过面. I had met Mr. Li before I ate dinner yesterday evening. 2 在他辞职（resign）以前,他是个好校长（president）. He had a good president before he resigned.第二句 为什么不用过去完成时呢？还是过去完成和过去时都能用？

1 在我昨天晚上吃饭以前，曾和李先生见过面。 I had already met Mr. Li when I ate dinner yesterday evening.
2 在他辞职（resign）以前，他是个好校长（president）。He was a good president before he resigned.

有点不对哦。
1、I had met Mr. Li before having dinner yesterday evening.
应该这样，因为 晚上吃饭 不能说 eat dinner 要说have dinner
再然后 before + doing 。 其实直接说 before dinner 也可以。
2、He was a good president before he resigned.

看中文句子的意思，不必用过去完成时，用过去时就可以了。
1.I met Mr.Lee before dinner last night.
2.He was a good president before he resigned.
只是表示过去发生的一个事件，所以用过去时就行了，而并不是要表示过去发生的时间持续到现在并发生影响。

1 在我昨天晚上吃饭以前，曾和李先生见过面。 I had met Mr. Li before I ate dinner yesterday evening. 对
2 在他辞职（resign）以前，他是个好校长（president）。 He was a good president before he resigned.

I had met Mr.Li before I had dinner yesterday evening.
He had been a good president before resinged.