I met him at a party and, before I knew it, we were in bed together!

我是在聚会上认识他的，在我搞清楚之前，我们已经在床上了。

youdao

We knew this teacher long before we saw him.

我们在看到这位老师之前很久就知道他了。

youdao

B we had known him long before we knew you.

我们在认识你之前就认识他了。

youdao

B we had known him long before we knew you.

我们在认识你之前就认识他了。

youdao