Shuptialong withher friends was present. Here the underlined phrase is a/an -

Shupti along with her friends was present. Here the underlined phrase is a/an - Conjunctional phrase. 

- A conjunctional phrase conducts the function of the conjunction.
- কোনো phrase বা শব্দসমষ্টি যখন conjunction এর কাজ করে তখন তাকে Conjunctional phrase বলে।
-  as much as, as long as, as well as, along with, together with, either-or, neither-nor, not only- but also ইত্যাদি Conjunctional phrase.