be的过去式和过去分词

过去式是was 或 were，过去分词是been，例如：

1.Every one of their CDs has been a hit.

他们的每一张激光唱片都曾经非常流行。

2.We'd been to hell and back together and we were still good friends.

我们曾经患难与共，现在依然是好友。