are是什么从句，that

是定语从句，例如：

1、We have been approached by a number of companies that are interested in our product.一些对我们的产品感兴趣的公司已和我们接洽。

2、Here are two records that are bubbling under.这两张唱片将会走红。

3、The report discusses a number of consequential matters that are yet to be decided.这份报告讨论了许多有待决定的重大问题。