be 动词也省略了??
追答这是属于非谓语动词做定语的情况,像这个例子:The woman (who is) standing behind the counter is an assistant. 也是属于这种情况,非谓语动词一般是表主动或表被动的那些动词(V+ing或v+ed形式的)可以作为非谓语,希望能够帮到你。
be动词也省略了??
追答又不是句子,要be做什么?
interested in joining the club可以改成who is interested in joining the club(定语从句)