a bunch of加可数还是不可数

加不可数，例如：

1、She picked me a bunch of flowers.她给我采了一束鲜花。

2、She placed a bunch of flowers at the tomb.她在坟墓上放了一束花。

3、This work was done by a bunch of amateurs!这项工作是一帮外行干的！

4、A bunch of kids were hanging around outside.一群年轻人在外面到处游逛。