as well中well是副词词性。

Just as well， I hear it isn't very good.

不必遗憾，我听说电影也不怎么样。

I am going to London and my sister is going as well.我要到伦敦去，我妹妹也要去。You may as well go.你去也好。It's just as well.Are they coming as well?

他们也来吗